Enter two people’s UTC offset and typical working hours to find the best overlapping window for a call or meeting.
This tool converts each person’s working-hours window into UTC, finds the overlap between the two UTC windows, and converts that overlap back into each person’s local time.
Person 1
UTC offset (e.g. -5 for US Eastern):
Working hours: to
Person 2
UTC offset:
Working hours: to
How It Works
This tool converts each person’s working-hours window into UTC, finds the overlap between the two UTC windows, and converts that overlap back into each person’s local time.
How to Use This Tool
- Enter Person 1’s UTC offset (for example, US Eastern Standard Time is -5).
- Enter Person 1’s typical working hours.
- Do the same for Person 2.
- Click Find Overlap to see the best meeting window in UTC and in each person’s local time.
UTC offsets shift with daylight saving time in many places; double-check the current offset for each location before relying on this for scheduling.
Did You Know?
- UTC (Coordinated Universal Time) does not observe daylight saving time, which is exactly why it is used as a stable reference point for scheduling across time zones.
- Some countries, like India and Iran, use time zone offsets with a 30- or 45-minute component instead of a full hour.
Frequently Asked Questions
What if there is no overlap at all?
The tool will let you know there is no overlap given the offsets and hours entered; one side may need to adjust its working hours for an occasional early or late call.
Does this account for daylight saving time automatically?
No, you need to enter the current UTC offset for each location, which may change twice a year in places that observe daylight saving time.