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Toolra
Date & Time

Timezone Overlap Finder

Scheduling across New York, London and Dhaka? Add each location with its working hours and Toolra finds the window where everyone is available, shown in each local time.

Runs in your browser Instant resultsFree · no sign-up

Participants

Shared window

Pick a date to calculate overlap.

How to use the Timezone Overlap Finder

  1. 1

    Pick a date.

  2. 2

    Add each time zone and working hours.

  3. 3

    See the overlap in every local time.

Helpful examples

  • Team in New York, London and Berlin, all 9:00–17:00
  • Client in Sydney with a developer in Los Angeles
  • Remote hires in Dhaka and Toronto with flexible hours

Daylight saving handled

Overlap is calculated for the exact date you pick, using your browser's time zone database, so daylight saving changes in March, October and November are applied correctly.

No overlap? See the gap

If working hours do not overlap, Toolra tells you by how much, so you can decide who shifts their day and by how many hours.

Frequently asked questions

Can working hours cross midnight?

Yes. Enter an end time earlier than the start, such as 22:00–06:00, for night shifts.

How many zones can I add?

Up to 8 time zones.

Where does time zone data come from?

From the IANA database built into your browser, the same data your device clock uses.