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diff --git a/doc/development/i18n/externalization.md b/doc/development/i18n/externalization.md
index 43b996d9395..f493ad4ae66 100644
--- a/doc/development/i18n/externalization.md
+++ b/doc/development/i18n/externalization.md
@@ -262,6 +262,21 @@ Sometimes you need to add some context to the text that you want to translate
     s__('OpenedNDaysAgo|Opened')
     ```
 
+### Dates / times
+
+- In JavaScript:
+
+```js
+import { createDateTimeFormat } from '.../locale';
+
+const dateFormat = createDateTimeFormat({ year: 'numeric', month: 'long', day: 'numeric' });
+console.log(dateFormat.format(new Date('2063-04-05'))) // April 5, 2063
+```
+
+This makes use of [`Intl.DateTimeFormat`].
+
+[`Intl.DateTimeFormat`]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DateTimeFormat
+
 ## Adding a new language
 
 Let's suppose you want to add translations for a new language, let's say French.