Start with the date
A meeting at 10:00 in Seoul on March 10, 2026 appears as a different local time and sometimes a different date in New York or London. Set the reference date and time first, save each attendee city, and check whether anyone lands on the previous or next local date.
Find the overlap in working hours
When there is no perfect slot, compare a practical window such as 09:00–18:00 in each city. For example, 22:00 in Seoul can be 09:00 in New York, but the exact relationship depends on the selected date and time-zone rules, so verify it for the meeting date.
Include the time zone in the invite
“10 PM” alone makes attendees recalculate the time. Include the city and date, and use a calendar invite that carries the time zone when possible. This tool uses IANA time-zone identifiers so the selected date’s rules are applied.
Compare meeting candidates in Seoul, New York and London
Suppose you are planning a meeting from Seoul on March 10, 2026. Each row describes one instant in three cities. Dates use year-month-day and times use the 24-hour clock.
| Seoul · UTC+9 | New York · UTC−4 | London · UTC+0 |
|---|---|---|
| 2026-03-10 10:00 | 2026-03-09 21:00 | 2026-03-10 01:00 |
| 2026-03-10 22:00 | 2026-03-10 09:00 | 2026-03-10 13:00 |
The first candidate is a Seoul morning but the previous evening in New York and the middle of the night in London. The second fits daytime in New York and London but is late in Seoul. If no 09:00–18:00 window overlaps for everyone, rotate the inconvenient slot or use an asynchronous meeting record.
Try it on the map
- Save Seoul, New York and London. The reference input uses your device time zone, not the selected city. Enter the Seoul values directly only when your device uses Seoul time.
- Enter the reference date and time, then read the date on every city card. Use the one-hour buttons to compare adjacent candidates.
- Include the date and zone, for example “2026-03-10 22:00 Asia/Seoul / 13:00 UTC”. For recurring meetings, check dates after daylight-saving transitions too.
Limits to keep in mind
The working-hours badge is a simple local-clock indication. It does not consult company schedules, weekends, public holidays or personal calendars. Send invitations and confirm availability in your calendar.
Official references
If you find an error in an explanation or example, please let us know on the contact page. Report an error