DataToolsLab
Date & Time Tools

World Clock / Meeting Time Planner

See the current time in multiple cities and plan meetings across zones.

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What is World Clock?

A live multi-zone clock. Pick the cities your team is in and the tool shows every local time simultaneously, updating every second.

How it works

Each city is resolved to an IANA timezone and formatted with Intl.DateTimeFormat, refreshed on a one-second interval.

  1. Enter your input. Type or paste your input into the field above — the tool responds instantly.
  2. Review the result. Output updates live as you type. Everything runs entirely in your browser.
  3. Copy or download. Use the Copy button to grab the result, or Download to save it as a file.

Examples

Finding a working-hours overlap

Add San Francisco and Berlin and scan the grid to find that mid-morning Pacific time is the only window where both offices are awake.

Common mistakes

Assuming one zone per country

Large countries span multiple timezones. Pick the city, not the country, for an accurate reading.

Frequently asked questions

How many cities can I add at once?

As many as you need — each is tracked with its own live clock, and the list is stored locally between visits.

Does it detect my own timezone?

Yes, your local zone is added by default and marked so you can anchor comparisons against it.

Are daylight-saving changes reflected?

Yes — clocks use the IANA timezone database, so offsets update automatically when a region enters or leaves DST.

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