How In-Browser Time Zone Meeting Planning Works
Global Time Zone Meeting Planner runs entirely in your browser with JavaScript. There is no sign-up, and whatever you type or open here is processed on your device instead of being sent to a server.
Coordinate International Meetings Across Multiple Time Zones
Find comfortable overlapping working hours for distributed teams across London, New York, San Francisco, Kampala, Mumbai, Tokyo, and Sydney. All schedule calculations execute directly in browser memory, keeping upcoming project dates and confidential meeting schedules private.
Accurate Daylight Saving Time (DST) Transitions
Unlike simple static offset charts, our meeting grid calculates exact local UTC offsets based on your chosen meeting date. It uses your browser's time-zone database to apply seasonal daylight saving clock shifts across North America, Europe, and Australia for the exact date you pick.
Color-Coded Working Hour Bands
Hours from 9:00 AM to 5:00 PM local time are highlighted green for every selected city, and the meeting summary labels each city's time as working hours or outside 9:00-17:00. Working hours are fixed at 9:00-17:00 local time for every city, and weekends and public holidays are not marked.
Common Meeting Times Across Time Zones
Pick the cities and the meeting date in the planner to see the exact hours for your call; the table shows the patterns it finds for three common pairs, with office hours taken as 9:00 to 17:00 local time. The same grid works for a team stand-up, a client call or a worldwide conference call or webinar with speakers on several continents. Differences change when one country moves its clocks and the other does not, which is why the planner always works from the date you choose.
| Cities | Time difference | Shared office hours |
|---|---|---|
| New York and London | 5 hours (4 for a few weeks each spring and autumn) | 9:00 to 12:00 in New York is 14:00 to 17:00 in London |
| London and Mumbai | 4 h 30 min in UK summer, 5 h 30 min in UK winter | London 9:00 to 12:30 in summer, 9:00 to 11:30 in winter |
| New York and Sydney | 14 to 16 hours, depending on the season | Almost none: 17:00 in New York is 7:00 (June) or 9:00 (January) the next day in Sydney |
Planning an International Conference Call or Webinar
For a call with speakers in three regions, choose their cities and the date of the event, then look for an hour that is green for every city. Often there is none: San Francisco and London office hours do not overlap at all, so someone joins early or late. For a recurring call, take turns with the inconvenient slot instead of always asking the same region. When you have a time, Copy meeting times gives the time in each city, ready to paste into the invitation. The planner marks working hours only; it does not know weekends or public holidays, so check those for each country.
| Cities | Shared office hours (9:00–17:00) | Usual compromise |
|---|---|---|
| San Francisco, New York, London | None: 9:00 in San Francisco is 17:00 in London | 8:00 San Francisco = 11:00 New York = 16:00 London, all year except a few weeks around the clock changes |
| London, Dubai, Mumbai | UK summer: London 9:00–12:30 (Dubai 12:00–15:30, Mumbai 13:30–17:00). UK winter: London 9:00–11:30 (Dubai 13:00–15:30, Mumbai 14:30–17:00) | Not needed: the shared hours are long enough for most calls |
| New York, Berlin, Tokyo | None | 8:00 New York = 14:00 Berlin = 21:00 Tokyo in summer, 22:00 in winter, because Japan does not change its clocks |
Why processing in your browser matters
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