Observatory log
Singapore and Honolulu, compared
- 01Difference now
Honolulu is 18 hours behind Singapore.
Singapore: UTC+8 (UTC+8) · Honolulu: HST (UTC−10)
- 02Through 2026–2027
The difference stays the same all year.
- 1 January 2026 – 31 December 2027−18 h
Difference of Honolulu from Singapore. It changes on the days either place changes its clocks (dates local to that place).
- 03Shared working hours
- Tue–Fri: 09:00–11:00 in Singapore = 15:00–17:00 in Honolulu (yesterday) · 2 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
09:00–11:00 in Singapore = 15:00–17:00 in Honolulu
Inside both working days (Tue–Fri).
- 05Weekend
Singapore: Saturday and Sunday
Honolulu: Saturday and Sunday
24 hours
A day in Singapore, in Honolulu
| Singapore | Honolulu | Working hours, evening, night or weekend in each place |
|---|---|---|
| 00:00 | 06:00Yesterday | |
| 01:00 | 07:00Yesterday | |
| 02:00 | 08:00Yesterday | |
| 03:00 | 09:00Yesterday | |
| 04:00 | 10:00Yesterday | |
| 05:00 | 11:00Yesterday | |
| 06:00 | 12:00Yesterday | |
| 07:00 | 13:00Yesterday | |
| 08:00 | 14:00Yesterday | |
| 09:00 | 15:00Yesterday | |
| 10:00 | 16:00Yesterday | |
| 11:00 | 17:00Yesterday | |
| 12:00 | 18:00Yesterday | |
| 13:00 | 19:00Yesterday | |
| 14:00 | 20:00Yesterday | |
| 15:00 | 21:00Yesterday | |
| 16:00 | 22:00Yesterday | |
| 17:00 | 23:00Yesterday | |
| 18:00 | 00:00 | |
| 19:00 | 01:00 | |
| 20:00 | 02:00 | |
| 21:00 | 03:00 | |
| 22:00 | 04:00 | |
| 23:00 | 05:00 |
Working hoursEarly or eveningNightWeekend
Questions
Asked about Singapore and Honolulu
What is the time difference between Singapore and Honolulu?
Honolulu is 18 hours behind Singapore. The difference stays the same all year.
What is the best time for a call between Singapore and Honolulu?
Inside both working days: Tue–Fri: 09:00–11:00 in Singapore = 15:00–17:00 in Honolulu (yesterday) · 2 h.
When does the time difference between Singapore and Honolulu change?
It does not change in the next 12 months: Singapore and Honolulu either keep the same time all year or change their clocks on the same dates.