Add birthday notification time hint

tibue99 · tibue99 · commit 10df0042038d · 2026-01-25T00:01:10.000+01:00
diff --git a/docs/features/birthday.md b/docs/features/birthday.md
@@ -2,6 +2,10 @@
 
 Cookie can send birthday greeting to channel on your server.
 
+!!! info "Birthday Notification Time"
+    Birthday notifications will be sent at **midnight** in the server's time zone.
+    You can set your time zone using `/settings`. 
+
 ---
 
 ## Member Setup
