Temporal.Now.timeZoneId()

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The Temporal.Now.timeZoneId() static method returns a time zone identifier representing the system's current time zone. Most systems will return a primary time zone identifier such as "America/New_York", though offset time zone identifier such as "-04:00" is possible too. The time zone identifier returned is the default time zone used by the other Temporal.Now methods.

Syntax

js
Temporal.Now.timeZoneId()

Parameters

None.

Return value

A valid time zone identifier representing the system's current time zone. The returned time zone identifier is never a non-primary time zone identifier (alias). For example, it would always return "Asia/Kolkata" (new name) instead of "Asia/Calcutta" (old name). For more information, see time zones and offsets.

If the implementation does not support time zones, the method always returns "UTC".

Examples

Getting the system's current time zone

js
console.log(Temporal.Now.timeZoneId()); // e.g.: "America/New_York"

Specifications

Specification
Temporal proposal
# sec-temporal.now.timezoneid

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
timeZoneId
Experimental

Legend

Tip: you can click/tap on a cell for more information.

No support
No support
Experimental. Expect behavior to change in the future.
See implementation notes.
User must explicitly enable this feature.

See also