Three Time Zone Meeting Planner
Plan a meeting across three time zones — enter the time in your zone and its UTC offset and see the matching local time, with day shifts, in two other zones.
How it works
UTC time = your local time − your UTC offset · each zone’s local time = UTC time + that zone’s offset · day shift = ⌊result ÷ 24 h⌋ (a negative result rolls to the previous day, over 24 h to the next)
To line up a meeting across zones, convert your chosen time to UTC by subtracting your offset, then add each zone’s offset to get its local time. When the result runs before midnight or past it, the tool flags the day shift so no one joins on the wrong date. Enter offsets as hours from UTC — half-hour zones like India (+5.5) and Newfoundland (−3.5) are supported. Because offsets are entered directly, daylight-saving changes are handled simply by using each location’s current offset for the meeting date.
Worked example
3:00 PM in New York (UTC−5) converts to 20:00 UTC. London at UTC+0 is therefore 8:00 PM the same day, and India at UTC+5.5 is 1:30 AM the next day — a 10.5-hour spread that makes this a late-night call for the India participant.
Frequently asked questions
How do I find a zone’s UTC offset?
Use the offset in effect on the meeting date. For example New York is −5 in winter and −4 during daylight saving, London is 0 or +1, and India is a steady +5.5. Entering the correct current offset makes the conversion exact.
Does it handle half-hour and 45-minute zones?
Half-hour zones such as India (+5.5) and Iran (+3.5) work by entering the decimal offset. The step is half-hourly, so 45-minute zones like Nepal (+5.75) round to the nearest half hour.
What does the day shift mean?
If a zone’s local time falls before your meeting date’s midnight or after it, the result shows "previous day" or "next day" so participants know the correct calendar date, not just the clock time.
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This calculator is for educational purposes. Double-check important results before acting on them.