🗓️ Meeting Planner (Time Zones)

How the Meeting Planner (Time Zones) Works

Choose a date and up to four time zones. The planner lays out all 24 hours of that day side by side, showing the local time in every zone for each hour. Hours that fall inside everyone's working hours are highlighted green; hours where at least one person would be outside working hours but still awake are shown in yellow, and night hours are left plain.

Working hours default to 09:00–17:00 and can be changed. Daylight saving time is applied automatically for the date you pick, so the result stays correct in the weeks when different countries change their clocks on different dates.

Formula

For each hour H of the day (in the first zone):
  local time in zone Z = H converted through UTC using zone Z's offset on that date
  "overlap" if  start ≤ local hour < end  for every selected zone

How to Use It

1. Pick the date of the meeting.
2. Choose up to four time zones (the first one is your own by default).
3. Adjust working hours if your team uses different ones.
4. Pick a green row — that time works for everyone.

Frequently Asked Questions

How do I find a good meeting time across time zones?

List the time zones of all participants and look for the hours when each local time falls inside normal working hours. This planner does that automatically for up to four zones and highlights the hours that work for everyone.

What if there is no hour that works for everyone?

That usually happens when zones are more than about 9–10 hours apart (for example US West Coast and India). In that case choose a yellow hour, which is outside working hours for someone but not in the middle of their night, and consider rotating the inconvenient slot between participants.

Does the planner account for daylight saving time?

Yes. Offsets are calculated for the exact date you pick, so it stays correct during the weeks when, for example, the US and Europe change their clocks on different dates.

Related Calculators

• 🌍 Time Zone Converter — Convert any date and time between world time zones, with daylight saving time handled automatically.
• 📆 Week Number Calculator — ISO 8601 and US week numbers for any date, and the dates of any week.
• 🪖 Military Time Converter — Convert between 12-hour and 24-hour (military) time instantly.
• 📅 Date Calculator — Find days between two dates, or add/subtract days from a date.

Formula and content last reviewed: September 2026. All calculations run in your browser — nothing you enter is sent to or stored on our servers.