RunLocalTools

World Clock — Live Time in Multiple Cities, With Meeting Overlap Finder

A live, glanceable board showing multiple timezones side by side. Add the cities you care about and see current local time in each, updating every second — instead of doing timezone math in your head or re-searching “what time is it in Tokyo” every time you need to know.

Why a persistent board beats a one-off search

A single “what time is it in Tokyo” search answers the question once, for one place, at one moment. That’s fine for an occasional check — but it breaks down the moment you’re regularly coordinating across several timezones: a distributed team spread across three or four regions, family scattered across countries, or clients in a handful of cities you deal with weekly. A persistent board that shows every relevant timezone at once, always current, replaces repeated one-off lookups with a single glance.

What makes this more than a row of clocks

  • Meeting overlap finder. Set working hours for each city (default 9am–5pm) and the board automatically works out which hours actually overlap across everyone — so instead of guessing at a meeting time, you get a suggested window.
  • Upcoming DST warnings. Any city with a daylight-saving change coming up in the next 45 days gets flagged, so a meeting time that works today doesn’t quietly break in three weeks.
  • Sunrise/sunset per city. A quick “is it dark there yet” reference alongside the clock — handy for deciding whether a call time is reasonable, not just whether it’s technically business hours.
  • “Pick a time” mode. Freeze the board at any future date and time to see what it looks like everywhere at once — useful for scheduling something weeks out, not just checking right now.
  • Search by city, country, or UTC offset. Type “Tokyo,” “Japan,” or “+9” — all resolve to the right timezone.
  • Drag to reorder, and a shareable link. Arrange cities in whatever order matters to you, then copy a link that reopens your exact board (same cities, same working hours) for someone else.

How to use it

  1. Search for a city, country, or UTC offset and add it to your board.
  2. Each city gets a live, updating clock, plus its own working-hours range you can adjust.
  3. Scroll down to see the suggested overlap window once you’ve added a couple of cities.
  4. Switch to “Pick a time” to check any future date/time instead of right now.
  5. Drag cities into whatever order you check them in, and copy a share link if you want to send your setup to someone else.

Common situations this solves

  • Finding a meeting time that actually works across a distributed team
  • Knowing when it’s a reasonable hour to call friends or family abroad
  • Checking whether it’s business hours somewhere before sending a message
  • Planning ahead for a specific future date across time zones, not just “right now”
  • A standing reference for anyone regularly working across multiple regions

If you need to convert one specific meeting time from a single timezone to another, rather than keep a running board, the Timezone Converter is built for that narrower task.

FAQ

Does the displayed time update live, or do I need to refresh?

It updates every second, so each tracked city always reflects the actual current time — no refresh needed.

Does this account for daylight saving time automatically?

Yes. Time and offsets are calculated from your browser’s built-in timezone database, so DST is handled automatically — and any city with a DST change coming up within 45 days gets flagged so you can plan around it.

Can I add specific cities, or only broad timezone regions?

You can search by city (“Tokyo”), country (“Japan”), or a UTC offset (“+9”) — city-level results map to the correct timezone and DST rules for that exact location.

Does my list of tracked cities save between visits?

Yes — your board, including each city’s working-hours range, is saved automatically in your browser. Nothing to rebuild each time, and no account required.

Can I see what time it’ll be somewhere at a future date, not just right now?

Yes, “Pick a time” freezes the whole board at any date and time you choose — useful for scheduling something weeks or months out.

How accurate are the sunrise/sunset times?

They’re a close approximation (accurate to within a few minutes) meant as a quick “is it light out there” reference — not a precise astronomical calculation.