Find a Meeting Time Across Time Zones
This free tool finds every window where people in different time zones are all working at the same time. Enter each person's zone and hours, and it lists the overlapping windows ranked by how many people are free and how reasonable the local time is for them.
No sign-up. Runs in your browser. Handles daylight saving and shifts that cross midnight.
Result
Eastern Time, London, Mumbai share 3h of overlapping working hours, starting at 14:00 UTC.
Overlapping windows
| UTC | Length | Who | Eastern Time | London | Mumbai |
|---|---|---|---|---|---|
| 14:00–17:00 | 3h | 2 of 3 | 09:00–12:00 | 14:00–17:00 | 19:30–22:30 |
| 09:00–11:30 | 2h 30m | 2 of 3 | 04:00–06:30 | 09:00–11:30 | 14:30–17:00 |
Try it with your own team
Results update as you type and the address bar stays shareable.
Overlap today (using current daylight saving offsets)
| UTC | Length | Who | Eastern Time | London | Mumbai |
|---|---|---|---|---|---|
| 08:00–11:30 | 3h 30m | 2 of 3 | 04:00–07:30 | 09:00–12:30 | 13:30–17:00 |
| 13:00–16:00 | 3h | 2 of 3 | 09:00–12:00 | 14:00–17:00 | 18:30–21:30 |
Current UTC offsets for these zones
| Time zone | IANA name | Offset | Abbreviation |
|---|---|---|---|
| Eastern Time | America/New_York | UTC−05:00 | EST |
| London | Europe/London | UTC+00:00 | GMT |
| Mumbai | Asia/Kolkata | UTC+05:30 | GMT+5:30 |
How it works
Each person's working window is converted from their local time into UTC, which puts every participant on one shared axis. The tool then counts, for every minute of the day, how many people are available, and reports the contiguous runs where that count is highest. Windows are ranked first by how many people they cover, then by how many participants would be meeting inside normal daytime hours, then by length — so a shorter window at a reasonable hour for everyone outranks a longer one that lands at 3am for someone.
Daylight saving
Offsets are resolved for a specific date, not assumed from a static table. This matters most between a zone that observes daylight saving and one that does not: the United States and India, for example, shift relative to each other twice a year even though India's clocks never move. A window that works in January may be an hour off in July.
Questions
- How do I find a meeting time across multiple time zones?
- Enter each person's time zone and their normal working hours. The tool converts every window to UTC, finds the minutes where they all overlap, and lists each overlapping window with the local time for every participant. If nobody shares a window, it falls back to the largest partial overlap so you can see who would have to flex.
- What if there is no overlap at all?
- With a wide enough spread — for example San Francisco, London and Sydney on standard 9-to-5 hours — no window works for everyone. The tool then shows the best partial overlap and how many people it covers, so you can decide who takes the early or late call, or whether to rotate it.
- Does this handle daylight saving time?
- Yes. Offsets are resolved for a specific date rather than assumed, so a pair of zones that shift on different weeks is handled correctly. Zones with no DST at all, such as India and Arizona, move relative to zones that do observe it twice a year.
- Does it handle shifts that cross midnight?
- Yes. A window such as 22:00 to 06:00 is treated as one continuous eight-hour block running into the next day, not as an invalid or zero-length range.
- Do I need an account?
- No. This tool is free, requires no sign-up, and runs entirely in your browser. TimeMappr itself — which saves teams, syncs calendars and shows a full week — has a free plan if you want to keep a schedule rather than compute one window.
Planning this for a whole team?
This tool computes one window. TimeMappr saves your team, shows a full week across six different views, syncs Google Calendar and Outlook busy blocks, and flags public holidays — so you are not re-entering hours every time. Free for 1 team and up to 15 members.