Choose your cities
Search cities or time zones, then set each team's actual working hours.
Seoul ↔ New York
Seoul ↔ New York
One good time.
Compare time zones, find a fair meeting time, and bring everyone together.
The planner starts with these two cities. Select your exact meeting date and reference city to compare local times. Asia/Seoul / America/New_York
Finding shared time…
01 / WORLD CLOCK
Your world, in sync
Working hoursFree timeNight
Tap any time to compare. Scroll sideways to explore the day.
This day has a clock change. The timeline follows actual elapsed time.
02 / FIND THE OVERLAP
Good times to meet
Based on the whole meeting and each city's working hours.
Working days are configurable. Public holidays are not included.
No account needed · Calculations stay in your browser
A better meeting starts here.
Compare world time zones and overlapping work hours. Plan international meetings with daylight saving support, shareable links and free calendar downloads.
See the overlap
Choose a date and meeting length. Green means working time; darker cells mean night.
Share one clear plan
Copy everyone's local times or export one calendar event with an exact start time.
Conversion examples by date
These are fixed examples for 2026, not the current time. Choose your exact date above. Clock changes can happen on different dates, temporarily changing the time difference.
| Date | Seoul | New York |
|---|---|---|
| 2026-01-15 | 2026-01-15 09:00 UTC+09:00 | 2026-01-14 19:00 UTC-05:00 |
| 2026-07-15 | 2026-07-15 09:00 UTC+09:00 | 2026-07-14 20:00 UTC-04:00 |
Frequently asked questions
Does this account for daylight saving time?
Yes. The selected meeting date determines each city's offset using IANA time-zone rules in your browser. Nonexistent local times are rejected. Repeated local times let you choose the first or second occurrence. Keep your browser and operating system up to date.
How are meeting times recommended?
The planner checks 15-minute start intervals on the reference city's selected date. Meetings that fit everyone's entire working period are prioritized. Otherwise, working minutes and night-time disruption are compared. Night means 22:00–07:00 outside explicitly configured work shifts.
Can I change working days or plan night shifts?
Yes. Each city has its own working days and hours. An end earlier than the start means the shift continues into the next day. Working days refer to the day the shift begins. Public holidays, personal calendars and attendance are not checked.
What does a shared link contain?
The exact instant, cities, working hours, duration and clock format are included after # in the URL. Anyone with the link can read these settings. The title is kept only in the current tab, and is excluded from shared links and custom analytics events.
Does the calendar export create recurring events?
No. The .ics download creates one event with an exact UTC start and end. Calendar apps that support iCalendar can import it. Check the local time before inviting participants, and review recurring meetings separately when daylight saving changes.
Is an account needed?
No. Preferences are saved in your browser when storage is available. Time calculations run on your device. Google ads and optional analytics use third-party services. Analytics only loads after you allow it.