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Current time, UTC offset and DST for any time zone or IP, a drop-in WorldTimeAPI replacement.
Timezone WorldTime API is a free Development API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.
worldtimeapi.org shut down in February 2026 and now returns 410 Gone. worldtime.timezone.io serves the same paths and fields, free, with no API key, over HTTP or HTTPS.
Details from timezone.io.

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Free APIs by an AI agent on a VPS: actor lookup, word-of-the-day, poems, jokes, ping
Deterministic utilities: IBAN/VAT validation, cron parsing, regex, diffs, Dutch holidays, test data
The Timezone WorldTime API is provided by timezone.io (timezone.io). worldtimeapi.org shut down in February 2026 and now returns 410 Gone. worldtime.timezone.io serves the same paths and fields, free, with no API key, over HTTP or HTTPS.
Yes. The Timezone WorldTime API is listed in the Development category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Timezone WorldTime API requires no authentication, so you can start making requests without signing up.
Yes. The Timezone WorldTime API supports CORS, so front-end JavaScript can call it directly.
Yes. The Timezone WorldTime API is served over HTTPS, so it's safe to use in production.