Timezone Meeting Planner

Add the people you meet with as members. Each row is one member; each column is one hour of the reference timezone (auto-detected from your browser, or set manually). For every hour the planner converts that instant into each member's local time and colors the cell against that member's own working hours:

• Green: inside the member's working hours — good to meet.
• Amber: within 2 hours of their start/end — workable for a short call.
• Grey: outside their hours — avoid.

The tool automatically pre-selects the best slot — the hour where everyone is within working hours, or, if none exists, the hour with the most overlap — so you see a workable answer before touching anything. A +1d / −1d badge flags when the meeting lands on a different calendar day for that member.

A global "9–5" doesn't exist. An engineer in Berlin may work 10:00–18:00 while a partner in Mumbai works 11:00–19:00. Set each member's real start and end hours and the overlap math uses their schedule, not a generic assumption — so the suggested slot is one everyone can actually attend.

Members, their timezones, and working hours are saved on this device, so your team is still set up the next time you open the planner. Nothing is sent to a server.

You can pick from the full IANA database (400+ zones), search by country, city, or flag, or choose a fixed UTC±offset (no daylight saving) when a person isn't tied to a specific city. The current offset is shown next to every option.

Offsets are political, not purely geographic: they span UTC−12 to UTC+14, some regions use 30- or 45-minute offsets (India UTC+5:30, Nepal UTC+5:45), and daylight saving shifts on different dates in each hemisphere. Conversion uses the browser's Intl engine, so DST is applied correctly for the date you choose.