Overlap Finder
for team hours.
People, zones, and shift windows. Visual overlap in local time, nothing uploaded, share a link.
Add your team
Name each person, pick their IANA timezone, and set when their workday starts and ends. Defaults are 9 to 5, but you can widen or shift any row.
Read the overlap
See the shared UTC window, hours of overlap, and each person's local slice on the timeline. Green overlap bands make gaps obvious.
Share one link
Copy the URL or Slack summary so ops, support, and engineering land on the same plan without re-entering zones.
Build the team, find the meeting window.
24-hour timeline with shared UTC window highlighted
How working-hour overlap works across time zones
Overlap is the block of hours when every person's local working window intersects. The wider the spread of zones, the smaller that block, and beyond a certain spread it disappears entirely.
Take a simple two-person example. A Berlin teammate working 9 to 5 CET and a New York teammate working 9 to 5 EST share just two hours: 3:00 PM to 5:00 PM in Berlin, which is 9:00 AM to 11:00 AM in New York. Add a third person in Singapore and a clean shared block may not exist at all, because Singapore's working day has ended before New York's begins.
If your team spans regions that observe daylight saving, the overlap can move by an hour for the few weeks each spring and autumn when one side has changed clocks and the other hasn't. The timeline reflects the correct offset for the date you're viewing.
Reviewed for 2026. Calculations use the IANA time zone database.
Frequently asked questions
Custom shifts, sharing links, offsets, and when to use pairwise or multi-city planners instead.
For each person you add, you set a timezone and a local work window (start and end). We compute the shared UTC window where everyone's hours overlap, then show each person's local slice on a 24-hour timeline so you can see who is early or late.