Time Zone Meeting Planner

Plan a meeting

1. Choose the reference city. Enter the date and start time as they would appear on a clock in that location.
2. Add the other locations. Choose from 48 listed options, including UTC, or enter an IANA time zone such as Europe/Zurich.
3. Set the meeting length from 30 minutes to 8 hours, in 30-minute steps.
4. Check each location’s working hours. The default is 09:00–18:00. Decide whether to exclude work shifts that start on Saturday or Sunday.
5. Calculate. Read each location’s start and end date, time and UTC offset, then choose a suggested start if one fits.

The reference location determines how the entered date and time are interpreted, even if your computer uses a different time zone. Dates from 2000 through 2100 are accepted. The initial setup uses Seoul as the reference, with New York and London as the other locations.

Example: Seoul, Singapore and Sydney

For a one-hour meeting on 12 October 2026 starting at 15:00 in Seoul, the calculated times are:

With 09:00–18:00 working hours in all three locations, the whole meeting fits. A meeting between locations farther apart, such as Seoul and New York, may have no overlap under those working hours. Check the actual hours people can attend before changing the inputs.

What the result tells you

Each location’s card shows its start and finish, local date and weekday, and whether the whole meeting is inside the working hours you entered. A date difference is measured against the reference date. A meeting can begin on the previous day in one location and end on the next day in another.

The UTC offset belongs to that location at that instant. It is not necessarily the location’s offset throughout the year. Start and end offsets can differ when a meeting crosses a daylight-saving transition.

The suggestions check possible starts every 30 minutes during the reference date. A suggested start fits the full chosen duration in every location’s working hours, including the reference location. Selecting a suggestion and applying it recalculates the meeting; merely opening the list does not change the selected meeting.

Read or save the day’s timetable

Open the day timetable to compare locations side by side. A check mark means the entire meeting from that row’s start fits within that location’s entered hours. Rows that work for everyone are highlighted. Scroll horizontally if the table is wider than your screen.

The timetable usually has 48 possible starts. On a clock-change date it can have fewer or more, because a local time may be skipped or occur twice. Repeated times have different UTC offsets and represent separate instants.

Copy the selected meeting summary to share its dates, times and assumptions. Save the timetable as CSV when you want the day’s rows and working-hour settings in a spreadsheet. The CSV also includes UTC starts and local start and finish details, which help distinguish repeated clock times. It is not a calendar invitation and does not book a meeting or notify anyone.

Daylight saving: missing and repeated times

The tool resolves the chosen local date and time to a UTC instant, then displays that same instant in every location. It uses the time zone rules available through your browser, rather than subtracting a fixed number of hours between cities.

A start time skipped by a clock change is rejected. For example, with the applicable New York rules, 02:30 on 8 March 2026 does not exist. Choose another start instead of assuming that time will be moved forward for you.

When a start occurs twice, the tool asks which one you mean and shows both offsets. New York’s 01:30 on 1 November 2026 has a first occurrence at UTC−04:00 and a second at UTC−05:00. Those starts are an hour apart.

Meeting length is actual elapsed time. A one-hour meeting can show the same local clock time at its start and finish during a backward clock change. Check the dates and offsets together.

Working hours and overnight shifts

Enter working hours in each location’s own local time. An end earlier than the start means an overnight shift: 22:00–06:00 runs into the following day. Equal start and end times are rejected; they do not mean a 24-hour shift.

The weekend option checks the date a work shift begins. A Friday-night shift continuing into Saturday morning is treated as Friday work. The option excludes Saturday and Sunday, not every country’s local weekend pattern. Public holidays, leave, lunch breaks and calendar availability are not included. Adjust the inputs and confirm availability with the people attending.

Common questions

What if there are no suggested times?

No suggestion means that no start on the 30-minute search grid fits the entered conditions. It does not prove that every possible start is unsuitable. You can enter a time such as 10:15 directly and calculate that meeting, shorten the duration, or try another date or set of hours.

Can I enter a location that is not listed?

Choose direct IANA time zone entry and use a name such as Europe/Zurich or Asia/Kathmandu. A supported-name suggestion list may appear when your browser provides it. Direct entry still works without that list, but an unknown or unsupported name is rejected. Bare abbreviations such as EST are not accepted. The tool also rejects duplicate time zones, including aliases that your browser resolves to the same zone.

Does it handle half-hour and quarter-hour offsets?

Yes. It uses the location’s rules and shows minute offsets, including zones such as Asia/Kolkata and Asia/Kathmandu. A time difference is not rounded to whole hours.

Are these the latest government time rules?

The calculation uses your browser’s built-in Intl time zone support. It does not fetch a fresh IANA database for every calculation. Governments can change their rules, and browsers or operating systems can receive those updates at different times. For an important meeting, use an updated browser and confirm the date and local time with the participants, especially after a recent rule change.

Will the planner remember my cities?

No. This tool does not save or send your entered locations, meeting times, working hours or results to the server. Reloading or leaving the tool clears the current work. Copy or download what you want to keep. The website’s separate favorites and recently used tools lists can remember that you used the planner, as explained in the privacy policy.

Time zone references

The IANA Time Zone Database records location-based time rules and is updated as boundaries, UTC offsets and daylight-saving rules change. Software vendors distribute those updates to users. The ECMAScript internationalization specification describes named time zone support, and MDN’s Intl.DateTimeFormat documentation explains formatting a date in a selected time zone.

For fixed durations such as hours to minutes, use the unit converter. Return to English tools or report a problem.