Meeting Planner Across Time Zones
Plan a call that lands inside everyone's working day. Add each participant with their UTC offset and work hours, and the planner finds the window where all of their working days overlap, shown in each person's local time and in UTC.
How to find a meeting time across time zones
- Add each participant with a name and their UTC offset (for example New York is -5).
- Set each person's working hours, or leave the default 9 to 17.
- Read the shared overlap window in every participant's local time, or a no-overlap message.
Examples
New York and London
New York (UTC-5) and London (UTC+0), both working 9 to 17
Overlap 14:00-17:00 UTC: 09:00-12:00 in New York, 14:00-17:00 in London (3 hours)
No shared working hours
Honolulu (UTC-10) and Tokyo (UTC+9), both working 9 to 17
No overlap: their working days do not meet on the same UTC day
Frequently asked questions
How does the overlap get calculated?
Each person's working hours are converted to UTC using their offset, then all the UTC windows are intersected. The shared part is the overlap, and it is mapped back into each person's local clock.
Does this account for daylight saving time?
No. The planner uses the fixed UTC offset you enter, so it is fully deterministic but does not shift for daylight saving. During DST seasons, enter the offset that is actually in effect for that person on the meeting date.
Why does it sometimes say there is no overlap?
When the participants are far apart, one person's working day in UTC can end before another's begins. The planner treats each working window as a single same-day span, so widely separated zones may show no common hours.
Can I use half-hour or quarter-hour offsets?
Yes. Offsets like +5.5 for India or +5.75 for Nepal are supported. Enter any offset between -12 and +14 and the overlap is computed to the same precision.
What do the work start and end hours mean?
They are each person's local working day, in 24-hour time. The default is 9 to 17 (9 AM to 5 PM). Only hours inside everyone's working window count toward the overlap.
Is my data sent to a server?
No. The whole calculation runs in your browser. The names, offsets and hours you enter never leave your device.
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