Observatory log
Singapore and Kulusuk, compared
- 01Difference now
Kulusuk is 9 hours behind Singapore.
Singapore: UTC+8 (UTC+8) · Kulusuk: UTC−1 (UTC−1)
Next changeFrom 24 October 2026: Kulusuk is 10 hours behind Singapore.
- 02Through 2026–2027
- 1 January 2026 – 29 March 2026−10 h
- 29 March 2026 – 24 October 2026−9 h
- 24 October 2026 – 28 March 2027−10 h
- 28 March 2027 – 30 October 2027−9 h
- 30 October 2027 – 31 December 2027−10 h
Difference of Kulusuk from Singapore. 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
18:00–22:00 in Singapore = 09:00–13:00 in Kulusuk
No shared office hours: this is early or late for one side (Tue–Fri).
Also possible: Tue–Fri: 15:00–17:00 in Singapore = 06:00–08:00 in Kulusuk · 2 h.
- 05Weekend
Singapore: Saturday and Sunday
Kulusuk: Saturday and Sunday
24 hours
A day in Singapore, in Kulusuk
| Singapore | Kulusuk | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 15:00Yesterday | |
| 01:00 | 16:00Yesterday | |
| 02:00 | 17:00Yesterday | |
| 03:00 | 18:00Yesterday | |
| 04:00 | 19:00Yesterday | |
| 05:00 | 20:00Yesterday | |
| 06:00 | 21:00Yesterday | |
| 07:00 | 22:00Yesterday | |
| 08:00 | 23:00Yesterday | |
| 09:00 | 00:00 | |
| 10:00 | 01:00 | |
| 11:00 | 02:00 | |
| 12:00 | 03:00 | |
| 13:00 | 04:00 | |
| 14:00 | 05:00 | |
| 15:00 | 06:00 | |
| 16:00 | 07:00 | |
| 17:00 | 08:00 | |
| 18:00 | 09:00 | |
| 19:00 | 10:00 | |
| 20:00 | 11:00 | |
| 21:00 | 12:00 | |
| 22:00 | 13:00 | |
| 23:00 | 14:00 |
Working hoursEarly or eveningNightWeekend
Questions
Asked about Singapore and Kulusuk
What is the time difference between Singapore and Kulusuk?
Kulusuk is 9 hours behind Singapore. This holds until 24 October 2026; then Kulusuk is 10 hours behind Singapore.
What is the best time for a call between Singapore and Kulusuk?
No shared office hours. The least awkward windows, early or late for one side: Tue–Fri: 18:00–22:00 in Singapore = 09:00–13:00 in Kulusuk · 4 h; Tue–Fri: 15:00–17:00 in Singapore = 06:00–08:00 in Kulusuk · 2 h.
When does the time difference between Singapore and Kulusuk change?
In the next 12 months it changes on: 24 October 2026 (−10 h); 28 March 2027 (−9 h).