diff --git a/concepts/durations-and-periods/.meta/config.json b/concepts/durations-and-periods/.meta/config.json
new file mode 100644
index 000000000..0c35ecea1
--- /dev/null
+++ b/concepts/durations-and-periods/.meta/config.json
@@ -0,0 +1,7 @@
+{
+  "blurb": "Represent amounts of time with Java's date-based `Period` and time-based `Duration` classes.",
+  "authors": [
+    "rabestro"
+  ],
+  "contributors": []
+}
diff --git a/concepts/durations-and-periods/about.md b/concepts/durations-and-periods/about.md
new file mode 100644
index 000000000..d082d7b7e
--- /dev/null
+++ b/concepts/durations-and-periods/about.md
@@ -0,0 +1,323 @@
+# About
+
+Classes like `LocalDate` and `LocalDateTime` describe a _point_ in time.
+The `java.time` package also has two classes that describe an _amount_ of time:
+
+- [`Period`][period-docs] is a date-based amount of time in years, months and days, such as "2 months and 5 days".
+- [`Duration`][duration-docs] is a time-based amount of time in seconds and nanoseconds, such as "1 hour and 30 minutes".
+
+The difference matters because calendar units do not have a fixed length.
+A month can have 28, 29, 30 or 31 days, so "one month" is not a fixed number of seconds.
+A `Period` follows the calendar, while a `Duration` measures exact time.
+
+| | `Period` | `Duration` |
+| --- | --- | --- |
+| Stores | years, months and days | seconds and nanoseconds |
+| Used with | `LocalDate` | `LocalTime`, `LocalDateTime`, `Instant` |
+| Example | "the membership lasts 1 month" | "the visit lasted 95 minutes" |
+| `toString()` | `P1Y2M15D` | `PT1H35M` |
+
+Both classes are immutable.
+Methods such as `plusDays()` or `multipliedBy()` return a _new_ instance and leave the original unchanged.
+
+## `Period`
+
+### Creating a period
+
+```java
+Period.ofDays(10);
+// => P10D
+
+Period.ofWeeks(2);
+// => P14D
+
+Period.ofMonths(3);
+// => P3M
+
+Period.of(1, 2, 15);
+// => P1Y2M15D
+```
+
+The result of `toString()` uses the [ISO-8601 duration format][iso-8601-durations]: `P` followed by the number of years (`Y`), months (`M`) and days (`D`).
+There are no weeks in a `Period`: `Period.ofWeeks(2)` is stored as 14 days.
+The same notation can be parsed back with `Period.parse()`:
+
+```java
+Period.parse("P1Y2M15D");
+// => P1Y2M15D
+```
+
+### Adding a period to a date
+
+A period is added to or subtracted from a date with `plus()` and `minus()`:
+
+```java
+LocalDate date = LocalDate.of(2024, 3, 10);
+
+date.plus(Period.ofMonths(2));
+// => 2024-05-10
+
+date.minus(Period.ofDays(10));
+// => 2024-02-29
+```
+
+The years are added first, then the months and then the days.
+When adding years or months lands on a day that does not exist, the result is moved back to the last valid day of that month:
+
+```java
+LocalDate.of(2025, 1, 31).plus(Period.ofMonths(1));
+// => 2025-02-28
+
+LocalDate.of(2024, 2, 29).plus(Period.ofYears(1));
+// => 2025-02-28
+```
+
+This also means that adding a period and then subtracting it again does not always give back the original date:
+
+```java
+LocalDate.of(2025, 1, 31).plus(Period.ofMonths(1)).minus(Period.ofMonths(1));
+// => 2025-01-28
+```
+
+### The period between two dates
+
+`Period.between()` returns the period from one date (inclusive) to another (exclusive).
+The same result is available as `LocalDate.until()`:
+
+```java
+LocalDate start = LocalDate.of(2023, 3, 10);
+LocalDate end = LocalDate.of(2024, 5, 25);
+
+Period.between(start, end);
+// => P1Y2M15D
+
+start.until(end);
+// => P1Y2M15D
+```
+
+The parts of a period are available through `getYears()`, `getMonths()` and `getDays()`.
+These parts are independent of each other: `getDays()` returns only the days part, not the total number of days.
+`toTotalMonths()` returns the years and months combined as a number of months, but there is no method for the total number of days, because that depends on which months are involved.
+
+```java
+Period period = Period.between(LocalDate.of(2024, 1, 15), LocalDate.of(2024, 3, 20));
+// => P2M5D
+
+period.getDays();
+// => 5
+
+period.toTotalMonths();
+// => 2
+```
+
+### Normalizing a period
+
+A period created with a factory method keeps its units exactly as given, and `equals()` compares the units one by one.
+`normalized()` rolls months over into years, but it leaves the days alone:
+
+```java
+Period.ofMonths(14);
+// => P14M
+
+Period.ofMonths(14).equals(Period.of(1, 2, 0));
+// => false
+
+Period.ofMonths(14).normalized();
+// => P1Y2M
+
+Period.ofDays(45).normalized();
+// => P45D
+```
+
+## Counting units with `ChronoUnit`
+
+To get the total number of a single unit between two points in time, use the `between()` method on one of the constants of [`ChronoUnit`][chronounit-docs]:
+
+```java
+LocalDate start = LocalDate.of(2024, 1, 15);
+LocalDate end = LocalDate.of(2024, 3, 20);
+
+ChronoUnit.DAYS.between(start, end);
+// => 65
+
+ChronoUnit.WEEKS.between(start, end);
+// => 9
+
+ChronoUnit.MONTHS.between(start, end);
+// => 2
+```
+
+Only complete units are counted, and the result is negative when the second argument is before the first one:
+
+```java
+ChronoUnit.DAYS.between(end, start);
+// => -65
+```
+
+`ChronoUnit` works with time-based units and date-times too:
+
+```java
+ChronoUnit.MINUTES.between(
+    LocalDateTime.of(2024, 3, 10, 18, 5),
+    LocalDateTime.of(2024, 3, 10, 19, 40));
+// => 95
+```
+
+## `Duration`
+
+### Creating a duration
+
+```java
+Duration.ofMinutes(90);
+// => PT1H30M
+
+Duration.ofSeconds(3725);
+// => PT1H2M5S
+
+Duration.ofDays(2);
+// => PT48H
+
+Duration.ofHours(2).plusMinutes(15);
+// => PT2H15M
+```
+
+In the ISO-8601 notation, the `T` separates the date part from the time part.
+A `Duration` has no date part, so its `toString()` always starts with `PT`.
+`Duration.ofDays()` treats a day as exactly 24 hours.
+
+A duration can also be parsed with `Duration.parse()`:
+
+```java
+Duration.parse("PT1H30M");
+// => PT1H30M
+```
+
+### Adding a duration to a time
+
+A duration is added to or subtracted from a `LocalTime`, a `LocalDateTime` or an `Instant` with `plus()` and `minus()`:
+
+```java
+LocalDateTime start = LocalDateTime.of(2024, 3, 10, 22, 30);
+
+start.plus(Duration.ofMinutes(90));
+// => 2024-03-11T00:00
+
+LocalTime.of(23, 0).plus(Duration.ofHours(2));
+// => 01:00
+```
+
+A `LocalTime` wraps around midnight, as the last example shows.
+
+A `LocalDate` has no time, so it cannot be combined with a `Duration`:
+
+```java
+LocalDate.of(2024, 3, 10).plus(Duration.ofHours(1));
+// => throws UnsupportedTemporalTypeException
+```
+
+### The duration between two times
+
+`Duration.between()` returns the exact amount of time between two times or date-times:
+
+```java
+LocalDateTime checkIn = LocalDateTime.of(2024, 3, 10, 18, 5);
+LocalDateTime checkOut = LocalDateTime.of(2024, 3, 10, 19, 40);
+
+Duration.between(checkIn, checkOut);
+// => PT1H35M
+
+Duration.between(checkOut, checkIn);
+// => PT-1H-35M
+```
+
+`Duration.between()` does not accept two `LocalDate` values, because a date has no seconds to measure:
+
+```java
+Duration.between(LocalDate.of(2024, 1, 15), LocalDate.of(2024, 3, 20));
+// => throws UnsupportedTemporalTypeException
+```
+
+Use `Period.between()` or `ChronoUnit.DAYS.between()` for dates instead.
+
+### Converting a duration
+
+The `toXxx()` methods convert a duration to a _total_ amount of a single unit, rounded down:
+
+```java
+Duration duration = Duration.ofSeconds(5730); // 1 hour, 35 minutes and 30 seconds
+
+duration.toHours();
+// => 1
+
+duration.toMinutes();
+// => 95
+
+duration.toSeconds();
+// => 5730
+```
+
+The `toXxxPart()` methods split a duration into its parts, as on a clock:
+
+```java
+Duration duration = Duration.ofSeconds(5730);
+
+duration.toHoursPart();
+// => 1
+
+duration.toMinutesPart();
+// => 35
+
+duration.toSecondsPart();
+// => 30
+```
+
+`toHoursPart()` stops at 23, because the hours above that are counted by `toDaysPart()`.
+
+### Comparing and calculating with durations
+
+Durations can be compared with `compareTo()`, and checked with `isZero()` and `isNegative()`:
+
+```java
+Duration visit = Duration.ofMinutes(95);
+Duration limit = Duration.ofHours(2);
+
+visit.compareTo(limit) > 0;
+// => false
+
+Duration.between(LocalTime.of(10, 0), LocalTime.of(9, 0)).isNegative();
+// => true
+```
+
+They also support arithmetic, such as `plus()`, `minus()`, `multipliedBy()` and `dividedBy()`:
+
+```java
+Duration.ofMinutes(20).multipliedBy(3);
+// => PT1H
+
+Duration.ofHours(2).dividedBy(Duration.ofMinutes(15));
+// => 8
+```
+
+## `Period` or `Duration`?
+
+For local dates and times, the choice is usually made for you: a date has no time to measure, and a time has no calendar.
+The difference becomes visible with time zones.
+When the clocks move forward for daylight saving time, a calendar day is only 23 hours long:
+
+```java
+ZonedDateTime noon = ZonedDateTime.of(2025, 3, 29, 12, 0, 0, 0, ZoneId.of("Europe/Amsterdam"));
+
+noon.plus(Period.ofDays(1));
+// => 2025-03-30T12:00+02:00[Europe/Amsterdam]
+
+noon.plus(Duration.ofDays(1));
+// => 2025-03-30T13:00+02:00[Europe/Amsterdam]
+```
+
+Adding a `Period` of one day keeps the time of day, while adding a `Duration` of one day adds exactly 24 hours.
+Use a `Period` for amounts people think about in calendar terms ("the same time next month") and a `Duration` for elapsed time ("the parking ticket is valid for 2 hours").
+
+[period-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Period.html
+[duration-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html
+[chronounit-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html
+[iso-8601-durations]: https://en.wikipedia.org/wiki/ISO_8601#Durations
diff --git a/concepts/durations-and-periods/introduction.md b/concepts/durations-and-periods/introduction.md
new file mode 100644
index 000000000..f57d468b6
--- /dev/null
+++ b/concepts/durations-and-periods/introduction.md
@@ -0,0 +1,155 @@
+# Introduction
+
+Classes like `LocalDate` and `LocalDateTime` describe a _point_ in time.
+The `java.time` package also has two classes that describe an _amount_ of time:
+
+- `java.time.Period` is an amount of time in years, months and days, such as "2 months and 5 days".
+- `java.time.Duration` is an amount of time in seconds and nanoseconds, such as "1 hour and 30 minutes".
+
+A `Period` follows the calendar, so it is used with dates.
+A `Duration` measures exact time, so it is used with times and date-times.
+
+```exercism/note
+Like the other `java.time` classes, `Period` and `Duration` are immutable.
+Methods that look like they change them return a _new_ instance instead.
+```
+
+## `Period`
+
+A `Period` is created with one of its static factory methods:
+
+```java
+Period.ofDays(10);
+// => P10D
+
+Period.ofMonths(3);
+// => P3M
+
+Period.of(1, 2, 15);
+// => P1Y2M15D
+```
+
+The result of `toString()` uses the [ISO-8601][iso-8601-durations] notation: `P` (for "period") followed by the number of years (`Y`), months (`M`) and days (`D`).
+
+A period can be added to or subtracted from a date:
+
+```java
+LocalDate date = LocalDate.of(2024, 3, 10);
+
+date.plus(Period.ofMonths(2));
+// => 2024-05-10
+
+date.minus(Period.ofDays(10));
+// => 2024-02-29
+```
+
+Because months have different lengths, adding months can land on a day that does not exist.
+In that case the result is moved back to the last valid day of the month:
+
+```java
+LocalDate.of(2025, 1, 31).plus(Period.ofMonths(1));
+// => 2025-02-28
+```
+
+`Period.between()` returns the period from one date (inclusive) to another (exclusive):
+
+```java
+LocalDate start = LocalDate.of(2023, 3, 10);
+LocalDate end = LocalDate.of(2024, 5, 25);
+
+Period period = Period.between(start, end);
+// => P1Y2M15D
+
+period.getYears();
+// => 1
+period.getMonths();
+// => 2
+period.getDays();
+// => 15
+```
+
+## Counting units with `ChronoUnit`
+
+A `Period` keeps its years, months and days apart.
+So `getDays()` returns only the days _part_ of the period, not the total number of days.
+To count the total number of a single unit between two dates, use the `between()` method of [`java.time.temporal.ChronoUnit`][chronounit-docs]:
+
+```java
+LocalDate start = LocalDate.of(2024, 1, 15);
+LocalDate end = LocalDate.of(2024, 3, 20);
+
+Period.between(start, end);
+// => P2M5D
+
+Period.between(start, end).getDays();
+// => 5
+
+ChronoUnit.DAYS.between(start, end);
+// => 65
+```
+
+The result is negative when the second date is before the first one:
+
+```java
+ChronoUnit.DAYS.between(end, start);
+// => -65
+```
+
+## `Duration`
+
+A `Duration` is also created with static factory methods:
+
+```java
+Duration.ofMinutes(90);
+// => PT1H30M
+
+Duration.ofHours(2).plusMinutes(15);
+// => PT2H15M
+```
+
+In the ISO-8601 notation, the `T` separates the date part from the time part, which is why durations are written as `PT...`.
+
+A duration can be added to or subtracted from a date-time:
+
+```java
+LocalDateTime start = LocalDateTime.of(2024, 3, 10, 22, 30);
+
+start.plus(Duration.ofMinutes(90));
+// => 2024-03-11T00:00
+```
+
+`Duration.between()` returns the exact amount of time between two date-times:
+
+```java
+LocalDateTime checkIn = LocalDateTime.of(2024, 3, 10, 18, 5);
+LocalDateTime checkOut = LocalDateTime.of(2024, 3, 10, 19, 40);
+
+Duration.between(checkIn, checkOut);
+// => PT1H35M
+```
+
+A duration can be converted to a single unit with methods such as `toHours()`, `toMinutes()` and `toSeconds()`.
+These return the _total_ amount in that unit, rounded down:
+
+```java
+Duration duration = Duration.ofMinutes(95);
+
+duration.toHours();
+// => 1
+duration.toMinutes();
+// => 95
+```
+
+To split a duration into its parts, as on a clock, use the `toXxxPart()` methods instead:
+
+```java
+Duration duration = Duration.ofMinutes(95);
+
+duration.toHoursPart();
+// => 1
+duration.toMinutesPart();
+// => 35
+```
+
+[iso-8601-durations]: https://en.wikipedia.org/wiki/ISO_8601#Durations
+[chronounit-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html
diff --git a/concepts/durations-and-periods/links.json b/concepts/durations-and-periods/links.json
new file mode 100644
index 000000000..9f4c0cd98
--- /dev/null
+++ b/concepts/durations-and-periods/links.json
@@ -0,0 +1,18 @@
+[
+  {
+    "url": "https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Period.html",
+    "description": "Period class documentation"
+  },
+  {
+    "url": "https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html",
+    "description": "Duration class documentation"
+  },
+  {
+    "url": "https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html",
+    "description": "ChronoUnit enum documentation"
+  },
+  {
+    "url": "https://dev.java/learn/date-time/period-duration/",
+    "description": "Period and Duration tutorial on dev.java"
+  }
+]
diff --git a/config.json b/config.json
index 37eb58513..faa193a10 100644
--- a/config.json
+++ b/config.json
@@ -341,6 +341,19 @@
           "enums"
         ],
         "status": "active"
+      },
+      {
+        "slug": "gym-front-desk",
+        "name": "Gym Front Desk",
+        "uuid": "6553f255-154f-441d-a6e1-a428434f9653",
+        "concepts": [
+          "durations-and-periods"
+        ],
+        "prerequisites": [
+          "datetime",
+          "strings"
+        ],
+        "status": "active"
       }
     ],
     "practice": [
@@ -593,11 +606,13 @@
         "name": "Gigasecond",
         "uuid": "bf1641c8-dc0d-4d38-9cfe-b4c132ea3553",
         "practices": [
-          "datetime"
+          "datetime",
+          "durations-and-periods"
         ],
         "prerequisites": [
           "datetime",
-          "numbers"
+          "numbers",
+          "durations-and-periods"
         ],
         "difficulty": 3
       },
@@ -2211,6 +2226,11 @@
       "uuid": "cc7a06d1-ddb3-4722-88a5-f762254d664e",
       "slug": "temporal-adjusters",
       "name": "Temporal Adjusters"
+    },
+    {
+      "uuid": "16500ebe-104e-44c3-84b3-3126a49bdb89",
+      "slug": "durations-and-periods",
+      "name": "Durations and Periods"
     }
   ],
   "key_features": [
diff --git a/exercises/concept/gym-front-desk/.docs/hints.md b/exercises/concept/gym-front-desk/.docs/hints.md
new file mode 100644
index 000000000..277c62016
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.docs/hints.md
@@ -0,0 +1,46 @@
+# Hints
+
+## General
+
+- A [`Period`][period-docs] is an amount of time in years, months and days, and is used with dates.
+- A [`Duration`][duration-docs] is an amount of time in seconds and nanoseconds, and is used with times and date-times.
+- Both classes are immutable: their methods return a new instance and leave the original unchanged.
+
+## 1. Work out when a membership ends
+
+- There is a [factory method][period-ofmonths] that creates a `Period` of a number of months.
+- A period can be added to a date with the date's [`plus()`][localdate-plus] method.
+- `plus()` already moves a day that does not exist back to the last day of the month, so you do not need to handle it yourself.
+
+## 2. Show how long a membership lasts
+
+- There is a [static method][period-between] on `Period` that returns the period between two dates.
+
+## 3. Count the days left on a membership
+
+- The `getDays()` method of a `Period` only returns the days part of the period, not the total number of days.
+- The [`between()`][chronounit-between] method of a [`ChronoUnit`][chronounit-docs] constant counts the total number of that unit between two dates.
+- [`Math.max()`][math-max] returns the larger of two numbers.
+
+## 4. Measure a visit
+
+- There is a [static method][duration-between] on `Duration` that returns the duration between two date-times.
+
+## 5. Print a visit on the receipt
+
+- There is a [method][duration-tohours] that returns the total number of hours in a duration.
+- There is a [method][duration-tominutespart] that returns only the minutes part of a duration, between 0 and 59.
+- [`String.format()`][string-format] with the format specifier `%02d` writes a number with at least two digits, padding it with a leading zero.
+
+[period-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Period.html
+[duration-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html
+[period-ofmonths]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Period.html#ofMonths(int)
+[localdate-plus]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/LocalDate.html#plus(java.time.temporal.TemporalAmount)
+[period-between]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Period.html#between(java.time.LocalDate,java.time.LocalDate)
+[chronounit-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html
+[chronounit-between]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html#between(java.time.temporal.Temporal,java.time.temporal.Temporal)
+[math-max]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/Math.html#max(long,long)
+[duration-between]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html#between(java.time.temporal.Temporal,java.time.temporal.Temporal)
+[duration-tohours]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html#toHours()
+[duration-tominutespart]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/Duration.html#toMinutesPart()
+[string-format]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/lang/String.html#format(java.lang.String,java.lang.Object...)
diff --git a/exercises/concept/gym-front-desk/.docs/instructions.md b/exercises/concept/gym-front-desk/.docs/instructions.md
new file mode 100644
index 000000000..4c7a39df8
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.docs/instructions.md
@@ -0,0 +1,76 @@
+# Instructions
+
+You have just started working at the front desk of a climbing gym.
+Members buy memberships for a number of months and check in and out every time they visit.
+The manager has asked you to write a helper that answers the questions members ask most often.
+
+## 1. Work out when a membership ends
+
+A membership that starts on a given date ends on the same day of the month, the given number of months later.
+When that day does not exist in the end month, the membership ends on the last day of that month instead.
+
+Implement the `FrontDesk.membershipEnd()` method that takes the start date of a membership and its number of months, and returns the date on which it ends:
+
+```java
+FrontDesk frontDesk = new FrontDesk();
+frontDesk.membershipEnd(LocalDate.of(2024, 3, 10), 1);
+// => LocalDate.of(2024, 4, 10)
+frontDesk.membershipEnd(LocalDate.of(2025, 1, 31), 1);
+// => LocalDate.of(2025, 2, 28)
+```
+
+## 2. Show how long a membership lasts
+
+On the membership card, the gym prints how long the membership lasts in years, months and days.
+
+Implement the `FrontDesk.membershipLength()` method that takes the start date and the end date of a membership, and returns the length of the membership as a `Period`:
+
+```java
+FrontDesk frontDesk = new FrontDesk();
+frontDesk.membershipLength(LocalDate.of(2023, 3, 10), LocalDate.of(2024, 5, 25));
+// => Period.of(1, 2, 15)
+```
+
+## 3. Count the days left on a membership
+
+Members often ask how many days they have left before their membership ends.
+
+Implement the `FrontDesk.daysLeft()` method that takes today's date and the end date of a membership, and returns the total number of days from today until the end date.
+When the end date is today or has already passed, there are no days left, so the method returns `0`:
+
+```java
+FrontDesk frontDesk = new FrontDesk();
+frontDesk.daysLeft(LocalDate.of(2024, 1, 15), LocalDate.of(2024, 3, 20));
+// => 65
+frontDesk.daysLeft(LocalDate.of(2024, 4, 2), LocalDate.of(2024, 3, 20));
+// => 0
+```
+
+## 4. Measure a visit
+
+The gym is open around the clock, and the turnstile records the date and time when a member checks in and out.
+
+Implement the `FrontDesk.visitDuration()` method that takes the check-in and check-out date-times of a visit, and returns how long the visit lasted as a `Duration`:
+
+```java
+FrontDesk frontDesk = new FrontDesk();
+frontDesk.visitDuration(LocalDateTime.of(2024, 3, 10, 23, 30), LocalDateTime.of(2024, 3, 11, 1, 15));
+// => Duration.ofMinutes(105)
+```
+
+## 5. Print a visit on the receipt
+
+The receipt shows the length of a visit in hours and minutes, like `1h 35m`.
+The minutes are always written with two digits, any seconds are left out, and the hours are not limited to a single day.
+
+Implement the `FrontDesk.formatVisit()` method that takes the duration of a visit and returns it in this format:
+
+```java
+FrontDesk frontDesk = new FrontDesk();
+frontDesk.formatVisit(Duration.ofMinutes(95));
+// => "1h 35m"
+frontDesk.formatVisit(Duration.ofHours(2).plusMinutes(5));
+// => "2h 05m"
+frontDesk.formatVisit(Duration.ofHours(26).plusMinutes(10));
+// => "26h 10m"
+```
diff --git a/exercises/concept/gym-front-desk/.docs/introduction.md b/exercises/concept/gym-front-desk/.docs/introduction.md
new file mode 100644
index 000000000..b9676bdc2
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.docs/introduction.md
@@ -0,0 +1,157 @@
+# Introduction
+
+## Durations and Periods
+
+Classes like `LocalDate` and `LocalDateTime` describe a _point_ in time.
+The `java.time` package also has two classes that describe an _amount_ of time:
+
+- `java.time.Period` is an amount of time in years, months and days, such as "2 months and 5 days".
+- `java.time.Duration` is an amount of time in seconds and nanoseconds, such as "1 hour and 30 minutes".
+
+A `Period` follows the calendar, so it is used with dates.
+A `Duration` measures exact time, so it is used with times and date-times.
+
+```exercism/note
+Like the other `java.time` classes, `Period` and `Duration` are immutable.
+Methods that look like they change them return a _new_ instance instead.
+```
+
+### `Period`
+
+A `Period` is created with one of its static factory methods:
+
+```java
+Period.ofDays(10);
+// => P10D
+
+Period.ofMonths(3);
+// => P3M
+
+Period.of(1, 2, 15);
+// => P1Y2M15D
+```
+
+The result of `toString()` uses the [ISO-8601][iso-8601-durations] notation: `P` (for "period") followed by the number of years (`Y`), months (`M`) and days (`D`).
+
+A period can be added to or subtracted from a date:
+
+```java
+LocalDate date = LocalDate.of(2024, 3, 10);
+
+date.plus(Period.ofMonths(2));
+// => 2024-05-10
+
+date.minus(Period.ofDays(10));
+// => 2024-02-29
+```
+
+Because months have different lengths, adding months can land on a day that does not exist.
+In that case the result is moved back to the last valid day of the month:
+
+```java
+LocalDate.of(2025, 1, 31).plus(Period.ofMonths(1));
+// => 2025-02-28
+```
+
+`Period.between()` returns the period from one date (inclusive) to another (exclusive):
+
+```java
+LocalDate start = LocalDate.of(2023, 3, 10);
+LocalDate end = LocalDate.of(2024, 5, 25);
+
+Period period = Period.between(start, end);
+// => P1Y2M15D
+
+period.getYears();
+// => 1
+period.getMonths();
+// => 2
+period.getDays();
+// => 15
+```
+
+### Counting units with `ChronoUnit`
+
+A `Period` keeps its years, months and days apart.
+So `getDays()` returns only the days _part_ of the period, not the total number of days.
+To count the total number of a single unit between two dates, use the `between()` method of [`java.time.temporal.ChronoUnit`][chronounit-docs]:
+
+```java
+LocalDate start = LocalDate.of(2024, 1, 15);
+LocalDate end = LocalDate.of(2024, 3, 20);
+
+Period.between(start, end);
+// => P2M5D
+
+Period.between(start, end).getDays();
+// => 5
+
+ChronoUnit.DAYS.between(start, end);
+// => 65
+```
+
+The result is negative when the second date is before the first one:
+
+```java
+ChronoUnit.DAYS.between(end, start);
+// => -65
+```
+
+### `Duration`
+
+A `Duration` is also created with static factory methods:
+
+```java
+Duration.ofMinutes(90);
+// => PT1H30M
+
+Duration.ofHours(2).plusMinutes(15);
+// => PT2H15M
+```
+
+In the ISO-8601 notation, the `T` separates the date part from the time part, which is why durations are written as `PT...`.
+
+A duration can be added to or subtracted from a date-time:
+
+```java
+LocalDateTime start = LocalDateTime.of(2024, 3, 10, 22, 30);
+
+start.plus(Duration.ofMinutes(90));
+// => 2024-03-11T00:00
+```
+
+`Duration.between()` returns the exact amount of time between two date-times:
+
+```java
+LocalDateTime checkIn = LocalDateTime.of(2024, 3, 10, 18, 5);
+LocalDateTime checkOut = LocalDateTime.of(2024, 3, 10, 19, 40);
+
+Duration.between(checkIn, checkOut);
+// => PT1H35M
+```
+
+A duration can be converted to a single unit with methods such as `toHours()`, `toMinutes()` and `toSeconds()`.
+These return the _total_ amount in that unit, rounded down:
+
+```java
+Duration duration = Duration.ofMinutes(95);
+
+duration.toHours();
+// => 1
+duration.toMinutes();
+// => 95
+```
+
+To split a duration into its parts, as on a clock, use the `toXxxPart()` methods instead:
+
+```java
+Duration duration = Duration.ofMinutes(95);
+
+duration.toHoursPart();
+// => 1
+duration.toMinutesPart();
+// => 35
+```
+
+[iso-8601-durations]: https://en.wikipedia.org/wiki/ISO_8601#Durations
+[chronounit-docs]: https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/time/temporal/ChronoUnit.html
diff --git a/exercises/concept/gym-front-desk/.docs/introduction.md.tpl b/exercises/concept/gym-front-desk/.docs/introduction.md.tpl
new file mode 100644
index 000000000..37c7bb4fc
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.docs/introduction.md.tpl
@@ -0,0 +1,3 @@
+# Introduction
+
+%{concept:durations-and-periods}
diff --git a/exercises/concept/gym-front-desk/.meta/config.json b/exercises/concept/gym-front-desk/.meta/config.json
new file mode 100644
index 000000000..8f05733c0
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.meta/config.json
@@ -0,0 +1,20 @@
+{
+  "authors": [
+    "rabestro"
+  ],
+  "files": {
+    "solution": [
+      "src/main/java/FrontDesk.java"
+    ],
+    "test": [
+      "src/test/java/FrontDeskTest.java"
+    ],
+    "exemplar": [
+      ".meta/src/reference/java/FrontDesk.java"
+    ],
+    "invalidator": [
+      "build.gradle"
+    ]
+  },
+  "blurb": "Learn about durations and periods by answering members' questions at the front desk of a climbing gym."
+}
diff --git a/exercises/concept/gym-front-desk/.meta/design.md b/exercises/concept/gym-front-desk/.meta/design.md
new file mode 100644
index 000000000..2e908e9e9
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.meta/design.md
@@ -0,0 +1,44 @@
+# Design
+
+## Learning objectives
+
+- Know the difference between the date-based `Period` and the time-based `Duration`.
+- Know how to create a `Period` with its factory methods and add it to a `LocalDate` with `plus()`.
+- Know that adding months clamps the result to the last valid day of the month.
+- Know how to get the period between two dates with `Period.between()`.
+- Know that `Period.getDays()` returns only the days part, and how to count the total number of days with `ChronoUnit.DAYS.between()`.
+- Know how to get the duration between two date-times with `Duration.between()`.
+- Know the difference between the `toXxx()` methods (total amount in a unit) and the `toXxxPart()` methods (part of the duration) of `Duration`.
+
+## Out of scope
+
+- Time zones, offsets and `ZonedDateTime`.
+- `Instant` and `Clock`.
+- Parsing and formatting the ISO-8601 representation of periods and durations.
+- `Period.normalized()` and `Duration` arithmetic such as `multipliedBy()` and `dividedBy()`.
+- Anything depending on the current date (`LocalDate.now()`).
+
+## Concepts
+
+- `durations-and-periods`
+
+## Prerequisites
+
+This exercise's prerequisites Concepts are:
+
+- `datetime`: creating and using `LocalDate` and `LocalDateTime`.
+- `strings`: building the receipt text.
+
+## Analyzer
+
+This exercise could benefit from the following rules in the [analyzer]:
+
+- `essential`: If `membershipEnd()` uses `plusDays()` or adds a fixed number of days per month, instruct the student to add a `Period` of months instead.
+- `essential`: If `daysLeft()` uses `Period.between(...).getDays()`, point out that it only returns the days part of the period and suggest `ChronoUnit.DAYS.between()`.
+- `actionable`: If `formatVisit()` uses `toHoursPart()`, point out that it stops at 23 hours and suggest `toHours()`.
+- `actionable`: If `formatVisit()` computes the minutes with `toMinutes() % 60`, suggest `toMinutesPart()`.
+
+If the solution does not receive any of the above feedback, it must be exemplar.
+Leave a `celebratory` comment to celebrate the success!
+
+[analyzer]: https://github.com/exercism/java-analyzer
diff --git a/exercises/concept/gym-front-desk/.meta/src/reference/java/FrontDesk.java b/exercises/concept/gym-front-desk/.meta/src/reference/java/FrontDesk.java
new file mode 100644
index 000000000..495917036
--- /dev/null
+++ b/exercises/concept/gym-front-desk/.meta/src/reference/java/FrontDesk.java
@@ -0,0 +1,28 @@
+import java.time.Duration;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.Period;
+import java.time.temporal.ChronoUnit;
+
+class FrontDesk {
+
+    public LocalDate membershipEnd(LocalDate start, int months) {
+        return start.plus(Period.ofMonths(months));
+    }
+
+    public Period membershipLength(LocalDate start, LocalDate end) {
+        return Period.between(start, end);
+    }
+
+    public long daysLeft(LocalDate today, LocalDate end) {
+        return Math.max(0, ChronoUnit.DAYS.between(today, end));
+    }
+
+    public Duration visitDuration(LocalDateTime checkIn, LocalDateTime checkOut) {
+        return Duration.between(checkIn, checkOut);
+    }
+
+    public String formatVisit(Duration visit) {
+        return String.format("%dh %02dm", visit.toHours(), visit.toMinutesPart());
+    }
+}
diff --git a/exercises/concept/gym-front-desk/build.gradle b/exercises/concept/gym-front-desk/build.gradle
new file mode 100644
index 000000000..dd3862eb9
--- /dev/null
+++ b/exercises/concept/gym-front-desk/build.gradle
@@ -0,0 +1,25 @@
+plugins {
+  id "java"
+}
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  testImplementation platform("org.junit:junit-bom:5.10.0")
+  testImplementation "org.junit.jupiter:junit-jupiter"
+  testImplementation "org.assertj:assertj-core:3.25.1"
+
+  testRuntimeOnly "org.junit.platform:junit-platform-launcher"
+}
+
+test {
+  useJUnitPlatform()
+
+  testLogging {
+    exceptionFormat = "full"
+    showStandardStreams = true
+    events = ["passed", "failed", "skipped"]
+  }
+}
diff --git a/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.jar b/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 000000000..b1b8ef56b
Binary files /dev/null and b/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.properties b/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 000000000..6394b4647
--- /dev/null
+++ b/exercises/concept/gym-front-desk/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.0-bin.zip
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/exercises/concept/gym-front-desk/gradlew b/exercises/concept/gym-front-desk/gradlew
new file mode 100755
index 000000000..b9bb139f7
--- /dev/null
+++ b/exercises/concept/gym-front-desk/gradlew
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/3d91ce3b8caaf77ad09f381f43615b715b53f72c/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/exercises/concept/gym-front-desk/gradlew.bat b/exercises/concept/gym-front-desk/gradlew.bat
new file mode 100644
index 000000000..24c62d56f
--- /dev/null
+++ b/exercises/concept/gym-front-desk/gradlew.bat
@@ -0,0 +1,82 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables, and ensure extensions are enabled
+setlocal EnableExtensions
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+"%COMSPEC%" /c exit 1
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+"%COMSPEC%" /c exit 1
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
+@rem which allows us to clear the local environment before executing the java command
+endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel
+
+:exitWithErrorLevel
+@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
+"%COMSPEC%" /c exit %ERRORLEVEL%
diff --git a/exercises/concept/gym-front-desk/src/main/java/FrontDesk.java b/exercises/concept/gym-front-desk/src/main/java/FrontDesk.java
new file mode 100644
index 000000000..8e74f9a61
--- /dev/null
+++ b/exercises/concept/gym-front-desk/src/main/java/FrontDesk.java
@@ -0,0 +1,27 @@
+import java.time.Duration;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.Period;
+
+class FrontDesk {
+
+    public LocalDate membershipEnd(LocalDate start, int months) {
+        throw new UnsupportedOperationException("Please implement the FrontDesk.membershipEnd() method");
+    }
+
+    public Period membershipLength(LocalDate start, LocalDate end) {
+        throw new UnsupportedOperationException("Please implement the FrontDesk.membershipLength() method");
+    }
+
+    public long daysLeft(LocalDate today, LocalDate end) {
+        throw new UnsupportedOperationException("Please implement the FrontDesk.daysLeft() method");
+    }
+
+    public Duration visitDuration(LocalDateTime checkIn, LocalDateTime checkOut) {
+        throw new UnsupportedOperationException("Please implement the FrontDesk.visitDuration() method");
+    }
+
+    public String formatVisit(Duration visit) {
+        throw new UnsupportedOperationException("Please implement the FrontDesk.formatVisit() method");
+    }
+}
diff --git a/exercises/concept/gym-front-desk/src/test/java/FrontDeskTest.java b/exercises/concept/gym-front-desk/src/test/java/FrontDeskTest.java
new file mode 100644
index 000000000..06a6bdef3
--- /dev/null
+++ b/exercises/concept/gym-front-desk/src/test/java/FrontDeskTest.java
@@ -0,0 +1,208 @@
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Tag;
+import org.junit.jupiter.api.Test;
+
+import java.time.Duration;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.Period;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class FrontDeskTest {
+
+    private final FrontDesk frontDesk = new FrontDesk();
+
+    @Test
+    @Tag("task:1")
+    @DisplayName("A one-month membership ends on the same day next month")
+    public void testMembershipEndOneMonth() {
+        var expected = LocalDate.of(2024, 4, 10);
+
+        assertThat(frontDesk.membershipEnd(LocalDate.of(2024, 3, 10), 1)).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:1")
+    @DisplayName("A twelve-month membership ends on the same day next year")
+    public void testMembershipEndTwelveMonths() {
+        var expected = LocalDate.of(2025, 3, 10);
+
+        assertThat(frontDesk.membershipEnd(LocalDate.of(2024, 3, 10), 12)).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:1")
+    @DisplayName("A membership starting on January 31st ends on the last day of February")
+    public void testMembershipEndClampedToEndOfFebruary() {
+        var expected = LocalDate.of(2025, 2, 28);
+
+        assertThat(frontDesk.membershipEnd(LocalDate.of(2025, 1, 31), 1)).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:1")
+    @DisplayName("A membership starting on January 31st ends on February 29th in a leap year")
+    public void testMembershipEndClampedToEndOfFebruaryInLeapYear() {
+        var expected = LocalDate.of(2024, 2, 29);
+
+        assertThat(frontDesk.membershipEnd(LocalDate.of(2024, 1, 31), 1)).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:1")
+    @DisplayName("A three-month membership starting on August 31st ends on November 30th")
+    public void testMembershipEndClampedToEndOfNovember() {
+        var expected = LocalDate.of(2024, 11, 30);
+
+        assertThat(frontDesk.membershipEnd(LocalDate.of(2024, 8, 31), 3)).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:2")
+    @DisplayName("Membership length in years, months and days")
+    public void testMembershipLengthYearsMonthsAndDays() {
+        var expected = Period.of(1, 2, 15);
+
+        assertThat(frontDesk.membershipLength(LocalDate.of(2023, 3, 10), LocalDate.of(2024, 5, 25)))
+            .isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:2")
+    @DisplayName("Membership length in months and days")
+    public void testMembershipLengthMonthsAndDays() {
+        var expected = Period.of(0, 2, 5);
+
+        assertThat(frontDesk.membershipLength(LocalDate.of(2024, 1, 15), LocalDate.of(2024, 3, 20)))
+            .isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:2")
+    @DisplayName("Membership length of exactly one year")
+    public void testMembershipLengthExactlyOneYear() {
+        var expected = Period.ofYears(1);
+
+        assertThat(frontDesk.membershipLength(LocalDate.of(2024, 3, 10), LocalDate.of(2025, 3, 10)))
+            .isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:2")
+    @DisplayName("Membership length is zero when it starts and ends on the same day")
+    public void testMembershipLengthZero() {
+        assertThat(frontDesk.membershipLength(LocalDate.of(2024, 3, 10), LocalDate.of(2024, 3, 10)))
+            .isEqualTo(Period.ZERO);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("Days left within the same month")
+    public void testDaysLeftSameMonth() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 3, 10), LocalDate.of(2024, 3, 25))).isEqualTo(15);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("Days left counts every day across several months")
+    public void testDaysLeftAcrossMonths() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 1, 15), LocalDate.of(2024, 3, 20))).isEqualTo(65);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("Days left across the end of the year")
+    public void testDaysLeftAcrossYearEnd() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 12, 20), LocalDate.of(2025, 1, 10))).isEqualTo(21);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("Days left includes February 29th in a leap year")
+    public void testDaysLeftInLeapYear() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 2, 1), LocalDate.of(2024, 3, 1))).isEqualTo(29);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("No days left on the day the membership ends")
+    public void testDaysLeftOnEndDate() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 3, 20), LocalDate.of(2024, 3, 20))).isEqualTo(0);
+    }
+
+    @Test
+    @Tag("task:3")
+    @DisplayName("No days left after the membership has ended")
+    public void testDaysLeftAfterEndDate() {
+        assertThat(frontDesk.daysLeft(LocalDate.of(2024, 4, 2), LocalDate.of(2024, 3, 20))).isEqualTo(0);
+    }
+
+    @Test
+    @Tag("task:4")
+    @DisplayName("Duration of an evening visit")
+    public void testVisitDurationEvening() {
+        var expected = Duration.ofMinutes(95);
+
+        assertThat(frontDesk.visitDuration(
+            LocalDateTime.of(2024, 3, 10, 18, 5),
+            LocalDateTime.of(2024, 3, 10, 19, 40))).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:4")
+    @DisplayName("Duration of a visit that goes past midnight")
+    public void testVisitDurationPastMidnight() {
+        var expected = Duration.ofMinutes(105);
+
+        assertThat(frontDesk.visitDuration(
+            LocalDateTime.of(2024, 3, 10, 23, 30),
+            LocalDateTime.of(2024, 3, 11, 1, 15))).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:4")
+    @DisplayName("Duration of a visit includes seconds")
+    public void testVisitDurationWithSeconds() {
+        var expected = Duration.ofMinutes(45).plusSeconds(59);
+
+        assertThat(frontDesk.visitDuration(
+            LocalDateTime.of(2024, 3, 10, 7, 0, 0),
+            LocalDateTime.of(2024, 3, 10, 7, 45, 59))).isEqualTo(expected);
+    }
+
+    @Test
+    @Tag("task:5")
+    @DisplayName("Format a visit of more than an hour")
+    public void testFormatVisitHoursAndMinutes() {
+        assertThat(frontDesk.formatVisit(Duration.ofMinutes(95))).isEqualTo("1h 35m");
+    }
+
+    @Test
+    @Tag("task:5")
+    @DisplayName("Format a visit with fewer than ten minutes past the hour")
+    public void testFormatVisitPadsMinutes() {
+        assertThat(frontDesk.formatVisit(Duration.ofHours(2).plusMinutes(5))).isEqualTo("2h 05m");
+    }
+
+    @Test
+    @Tag("task:5")
+    @DisplayName("Format a visit of less than an hour, ignoring seconds")
+    public void testFormatVisitIgnoresSeconds() {
+        assertThat(frontDesk.formatVisit(Duration.ofMinutes(45).plusSeconds(59))).isEqualTo("0h 45m");
+    }
+
+    @Test
+    @Tag("task:5")
+    @DisplayName("Format a visit of more than a day")
+    public void testFormatVisitLongerThanADay() {
+        assertThat(frontDesk.formatVisit(Duration.ofHours(26).plusMinutes(10))).isEqualTo("26h 10m");
+    }
+
+    @Test
+    @Tag("task:5")
+    @DisplayName("Format an empty visit")
+    public void testFormatVisitZero() {
+        assertThat(frontDesk.formatVisit(Duration.ZERO)).isEqualTo("0h 00m");
+    }
+}
diff --git a/exercises/settings.gradle b/exercises/settings.gradle
index 019a3ee94..46b0c1fa4 100644
--- a/exercises/settings.gradle
+++ b/exercises/settings.gradle
@@ -12,6 +12,7 @@ include 'concept:cars-assemble'
 include 'concept:jedliks-toy-car'
 include 'concept:football-match-reports'
 include 'concept:gotta-snatch-em-all'
+include 'concept:gym-front-desk'
 include 'concept:international-calling-connoisseur'
 include 'concept:karls-languages'
 include 'concept:lasagna'