Observatory log
Tokyo and Buchans, compared
- 01Difference now
Buchans is 11 hours 30 minutes behind Tokyo.
Tokyo: JST (UTC+9) · Buchans: NDT (UTC−2:30)
Next changeFrom 1 November 2026: Buchans is 12 hours 30 minutes behind Tokyo.
- 02Through 2026–2027
- 1 January 2026 – 8 March 2026−12 h 30 min
- 8 March 2026 – 1 November 2026−11 h 30 min
- 1 November 2026 – 14 March 2027−12 h 30 min
- 14 March 2027 – 7 November 2027−11 h 30 min
- 7 November 2027 – 31 December 2027−12 h 30 min
Difference of Buchans from Tokyo. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
Their working days never overlap.
Counted as 09:00–17:00 local time on each place’s own working days, for the next seven days.
- 04Best time to meet
20:30–22:00 in Tokyo = 09:00–10:30 in Buchans
No shared office hours: this is early or late for one side (Mon–Fri).
Also possible: Tue–Fri: 09:00–09:30 in Tokyo = 21:30–22:00 in Buchans (yesterday) · 30 min.
- 05Weekend
Tokyo: Saturday and Sunday
Buchans: Saturday and Sunday
24 hours
A day in Tokyo, in Buchans
| Tokyo | Buchans | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 12:30Yesterday | |
| 01:00 | 13:30Yesterday | |
| 02:00 | 14:30Yesterday | |
| 03:00 | 15:30Yesterday | |
| 04:00 | 16:30Yesterday | |
| 05:00 | 17:30Yesterday | |
| 06:00 | 18:30Yesterday | |
| 07:00 | 19:30Yesterday | |
| 08:00 | 20:30Yesterday | |
| 09:00 | 21:30Yesterday | |
| 10:00 | 22:30Yesterday | |
| 11:00 | 23:30Yesterday | |
| 12:00 | 00:30 | |
| 13:00 | 01:30 | |
| 14:00 | 02:30 | |
| 15:00 | 03:30 | |
| 16:00 | 04:30 | |
| 17:00 | 05:30 | |
| 18:00 | 06:30 | |
| 19:00 | 07:30 | |
| 20:00 | 08:30 | |
| 21:00 | 09:30 | |
| 22:00 | 10:30 | |
| 23:00 | 11:30 |
Working hoursEarly or eveningNightWeekend
Plan a meeting: Tokyo and Buchans
More time differences with Tokyo
Questions
Asked about Tokyo and Buchans
What is the time difference between Tokyo and Buchans?
Buchans is 11 hours 30 minutes behind Tokyo. This holds until 1 November 2026; then Buchans is 12 hours 30 minutes behind Tokyo.
What is the best time for a call between Tokyo and Buchans?
No shared office hours. The least awkward windows, early or late for one side: Mon–Fri: 20:30–22:00 in Tokyo = 09:00–10:30 in Buchans · 1 h 30 min; Tue–Fri: 09:00–09:30 in Tokyo = 21:30–22:00 in Buchans (yesterday) · 30 min.
When does the time difference between Tokyo and Buchans change?
In the next 12 months it changes on: 1 November 2026 (−12 h 30 min); 14 March 2027 (−11 h 30 min).