1 files changed, 10 insertions, 0 deletions
diff --git a/std/datetime/README.md b/std/datetime/README.md
index 6c29f65e4..ae6b6f133 100644
--- a/std/datetime/README.md
+++ b/std/datetime/README.md
@@ -37,3 +37,13 @@ import {
 dayOfYear(new Date("2019-03-11T03:24:00")); // output: 70
 currentDayOfYear(); // output: ** depends on when you run it :) **
 ```
+
+### weekOfYear
+
+- `weekOfYear(date: Date)` - Returns the week number of the provided date (1-53)
+
+```ts
+import { weekOfYear } from "https://deno.land/std/datetime/mod.ts";
+
+weekOfYear(new Date("2020-12-28T03:24:00")); // Returns 53
+```