Tool Hub

Business Hours Overlap

Two cities business hours → overlapping collaboration time

Result in UTC — all lanes below are UTC hours

Asia/Seoul 9–18, shown in UTC

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America/New_York 9–18, shown in UTC

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Overlap (UTC hours)

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0 overlapping hour(s). All times shown in UTC.

How to use

  1. Select the timezone for City A and set its working hours using the start and end time selectors.
  2. Select the timezone for City B and set its working hours.
  3. Read the overlap lane in the result, which shows the shared UTC hours where both offices are simultaneously working.
  4. Note the overlap count shown below the lane — zero means no common working window exists.

Examples

  • London (09:00–17:00) and Tokyo (09:00–18:00) share 0 overlapping UTC hours with standard schedules; shifting Tokyo start to 17:00 UTC opens a 1-hour window.
  • New York (09:00–17:00 ET) and London (09:00–17:00 GMT) share roughly 4 UTC hours of overlap in winter.

Verify outputs before using in production. No warranty — see Terms.