Observatory log
Tokyo and Changwon, compared
- 01Difference now
Tokyo and Changwon have the same time.
Tokyo: JST (UTC+9) · Changwon: KST (UTC+9)
- 02Through 2026–2027
The difference stays the same all year.
- 1 January 2026 – 31 December 2027Same time
Difference of Changwon from Tokyo. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Mon–Fri: 09:00–17:00 in Tokyo = 09:00–17:00 in Changwon · 8 h
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
09:00–17:00 in Tokyo = 09:00–17:00 in Changwon
Inside both working days (Mon–Fri).
- 05Weekend
Tokyo: Saturday and Sunday
Changwon: Saturday and Sunday
24 hours
A day in Tokyo, in Changwon
| Tokyo | Changwon | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 00:00 | |
| 01:00 | 01:00 | |
| 02:00 | 02:00 | |
| 03:00 | 03:00 | |
| 04:00 | 04:00 | |
| 05:00 | 05:00 | |
| 06:00 | 06:00 | |
| 07:00 | 07:00 | |
| 08:00 | 08:00 | |
| 09:00 | 09:00 | |
| 10:00 | 10:00 | |
| 11:00 | 11:00 | |
| 12:00 | 12:00 | |
| 13:00 | 13:00 | |
| 14:00 | 14:00 | |
| 15:00 | 15:00 | |
| 16:00 | 16:00 | |
| 17:00 | 17:00 | |
| 18:00 | 18:00 | |
| 19:00 | 19:00 | |
| 20:00 | 20:00 | |
| 21:00 | 21:00 | |
| 22:00 | 22:00 | |
| 23:00 | 23:00 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Tokyo and Changwon
More time differences with Tokyo
Questions
Asked about Tokyo and Changwon
What is the time difference between Tokyo and Changwon?
Tokyo and Changwon have the same time. The difference stays the same all year.
What is the best time for a call between Tokyo and Changwon?
Inside both working days: Mon–Fri: 09:00–17:00 in Tokyo = 09:00–17:00 in Changwon · 8 h.
When does the time difference between Tokyo and Changwon change?
It does not change in the next 12 months: Tokyo and Changwon either keep the same time all year or change their clocks on the same dates.