Meeting Planner & World Clock
See overlapping working hours across your team's cities, and get suggested meeting times.
How the meeting overlap is calculated
Each city's current local time is computed from its IANA timezone, which resolves daylight saving automatically. The 24-hour grid then checks, hour by hour in UTC, how many of your cities fall within their own local working hours (default 09:00–17:00, Monday–Friday) at that moment — colour-coded from fully available (green) through partial to none (red), so overlap patterns are visible at a glance rather than requiring manual timezone math.
For a simpler point-in-time conversion between timezones without the working-hours overlap analysis, see the Timezone Conversion Calculator. Note that this tool checks weekday overlap only — it doesn't account for public holidays in any of the cities, so pair it with the Business Days Calculator if a specific holiday calendar matters for your planning.
Frequently asked questions
- What day is the overlap grid based on?
- Today's date, evaluated Monday-Friday in each city's own local timezone — a city already past its working day (or on a weekend) shows no availability for that slot.
- Does this account for public holidays?
- No — it's a straightforward working-hours (default 09:00-17:00, Monday-Friday) overlap check with no holiday calendar.
- How are suggested slots ranked?
- By how many of your cities are within working hours at that UTC hour, highest overlap first.
- What time zones are included?
- Any IANA timezone can be entered for each city — search by city name or timezone code in the timezone field. Up to 8 cities can be compared simultaneously.
- How are daylight saving time transitions handled?
- Each city's current local time and UTC offset is computed using its IANA timezone identifier, which automatically accounts for daylight saving time — the overlap grid reflects whatever offset actually applies right now, not a fixed year-round offset.
- What is UTC and why is it used as a reference?
- UTC (Coordinated Universal Time) is the global time standard that never changes for daylight saving. It's used as the common reference axis for the overlap grid because every city's local time can be expressed as a fixed or DST-adjusted offset from it, making it the only stable way to compare multiple timezones at once.
- What is the best time for a global meeting across multiple time zones?
- It depends entirely on which cities are involved — there's often no single hour where every city is within standard working hours, especially across cities more than ~9-10 hours apart. The suggested-slots feature ranks the available hours by how many cities are covered, so you can see the best realistic compromise rather than guessing.
- What is the difference between GMT and UTC?
- GMT (Greenwich Mean Time) is a specific timezone (UK winter time) that happens to share the same offset as UTC for most of the year. UTC is a timekeeping standard, not a timezone tied to any location — in practice the two are often used interchangeably, but UTC is the technically correct reference for international time coordination.