On the standards track: Yes
Is Experimental: Yes
Is Deprecated: No
Not in Chrome
Not in Chrome Android
In Deno version 1.40 on 2024-01-25
Not in Edge
In Firefox version 139 on 2025-05-27 Note: Calendars islamic, islamic-rgsa and islamic-umalqura are not available. See bug 1950425 and bug 1954138.
In Firefox for Android version 139 on 2025-05-27 Note: Calendars islamic, islamic-rgsa and islamic-umalqura are not available. See bug 1950425 and bug 1954138.
Not in Internet Explorer
Not in Node.js
Not in Quest Browser
Not in Opera
Not in Opera Android
Not in Safari
Not in Safari on iOS
Not in Samsung Internet
Not in WebView Android
Not in WebView on iOS