diff --git a/concepts/datetime/.meta/config.json b/concepts/datetime/.meta/config.json
index f68620354..e6bd977c0 100644
--- a/concepts/datetime/.meta/config.json
+++ b/concepts/datetime/.meta/config.json
@@ -1,5 +1,9 @@
 {
   "blurb": "There are several classes in Java to work with dates and time.",
-  "authors": ["sanderploegsma"],
-  "contributors": []
+  "authors": [
+    "sanderploegsma"
+  ],
+  "contributors": [
+    "kahgoh"
+  ]
 }
diff --git a/concepts/datetime/about.md b/concepts/datetime/about.md
index 8ab1fbad6..ebeb1b3a3 100644
--- a/concepts/datetime/about.md
+++ b/concepts/datetime/about.md
@@ -118,7 +118,18 @@ printer.format(date);
 // => "December 3, 2007"
 ```
 
+A [locale][locale] can also be specified when creating the custom format to format and parse for different regions:
+
+```java
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.FRENCH).format(date);
+// => décembre 3, 2007
+
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.of("pt")).format(date);
+// => dezembro 3, 2007
+```
+
 [iso-8601]: https://en.wikipedia.org/wiki/ISO_8601
 [localdate-docs]: https://docs.oracle.com/javase/8/docs/api/java/time/LocalDate.html
 [localdatetime-docs]: https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html
+[locale]: https://docs.oracle.com/javase/8/docs/api/java/util/Locale.html
 [datetimeformatter-docs]: https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html
diff --git a/concepts/datetime/introduction.md b/concepts/datetime/introduction.md
index 2b9513189..d4fbd5960 100644
--- a/concepts/datetime/introduction.md
+++ b/concepts/datetime/introduction.md
@@ -86,4 +86,14 @@ printer.format(date);
 // => "December 3, 2007"
 ```
 
+A locale can also be specified when creating the custom format to format and parse for different regions:
+
+```java
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.FRENCH).format(date);
+// => décembre 3, 2007
+
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.of("pt")).format(date);
+// => dezembro 3, 2007
+```
+
 [iso-8601]: https://en.wikipedia.org/wiki/ISO_8601
diff --git a/exercises/concept/booking-up-for-beauty/.docs/introduction.md b/exercises/concept/booking-up-for-beauty/.docs/introduction.md
index ed132331c..57768dafe 100644
--- a/exercises/concept/booking-up-for-beauty/.docs/introduction.md
+++ b/exercises/concept/booking-up-for-beauty/.docs/introduction.md
@@ -88,4 +88,14 @@ printer.format(date);
 // => "December 3, 2007"
 ```
 
+A locale can also be specified when creating the custom format to format and parse for different regions:
+
+```java
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.FRENCH).format(date);
+// => décembre 3, 2007
+
+DateTimeFormatter.ofPattern("MMMM d, yyyy", Locale.of("pt")).format(date);
+// => dezembro 3, 2007
+```
+
 [iso-8601]: https://en.wikipedia.org/wiki/ISO_8601