Free Online World Clock Tool

1. Glance at the default tiles for live UTC, NYC, London, Paris, Mumbai, Tokyo and Sydney times.
2. Pick a zone from the dropdown and press Add to include another city.
3. Press Remove on any tile to drop a zone you no longer need.
4. Leave the tab open — clocks tick once per second and DST switches happen automatically.

World clocks are essential for distributed teams, frequent travellers and anyone with family across countries. Knowing it's 4pm in London means there's an hour before colleagues in Sydney finish the day, or that calling Mumbai right now lands at 9pm there.

This world clock starts with seven common zones — UTC, New York, London, Paris, Mumbai (Asia/Kolkata), Tokyo and Sydney — and lets you add any IANA zone the browser supports via Intl.supportedValuesOf('timeZone'). That gives over 400 options including all major cities and historical zone names. Times are formatted with Intl.DateTimeFormat, which carries the full IANA timezone database, so daylight-saving transitions are applied without manual intervention.

The display updates every second. Remove a zone with the Remove button next to it. No state is persisted — refreshing the tab returns to the default seven zones.