Time difference between Honolulu and Singapore
Singapore is 18 hours ahead of Honolulu
Honolulu, the United States is UTC−10 · Singapore, Singapore is UTC+8 — on standard time
The gap holds all year
Neither city changes its clocks — Honolulu does not change its clocks and Singapore does not change its clocks — so 18 hours is the difference in January and in July alike. That is worth knowing about this pair specifically, because most international pairs do move and a recurring meeting between them does not need checking twice a year.
When they can both be at their desks
Nine-to-five in Honolulu and nine-to-five in Singapore do not overlap at all. With 18 hours between them, one side is always outside working hours, and the practical question is which side takes the early start or the late finish rather than when to meet.
Honolulu to Singapore, hour by hour
| Honolulu | Singapore |
|---|---|
| 12:00 AM | 6:00 PM |
| 1:00 AM | 7:00 PM |
| 2:00 AM | 8:00 PM |
| 3:00 AM | 9:00 PM |
| 4:00 AM | 10:00 PM |
| 5:00 AM | 11:00 PM |
| 6:00 AM | 12:00 AM (next day) |
| 7:00 AM | 1:00 AM (next day) |
| 8:00 AM | 2:00 AM (next day) |
| 9:00 AM | 3:00 AM (next day) |
| 10:00 AM | 4:00 AM (next day) |
| 11:00 AM | 5:00 AM (next day) |
| 12:00 PM | 6:00 AM (next day) |
| 1:00 PM | 7:00 AM (next day) |
| 2:00 PM | 8:00 AM (next day) |
| 3:00 PM | 9:00 AM (next day) |
| 4:00 PM | 10:00 AM (next day) |
| 5:00 PM | 11:00 AM (next day) |
| 6:00 PM | 12:00 PM (next day) |
| 7:00 PM | 1:00 PM (next day) |
| 8:00 PM | 2:00 PM (next day) |
| 9:00 PM | 3:00 PM (next day) |
| 10:00 PM | 4:00 PM (next day) |
| 11:00 PM | 5:00 PM (next day) |
On the usual gap of 18 hours.
Frequently asked questions
What is the time difference between Honolulu and Singapore?
Singapore is 18 hours ahead of Honolulu for most of the year. The gap never changes: Honolulu does not change its clocks and Singapore does not change its clocks.
Is Singapore ahead of Honolulu?
Yes — Singapore is 18 hours ahead. Honolulu is UTC−10 and Singapore is UTC+8 on standard time.
What time is 9 AM in Honolulu in Singapore?
3:00 AM (next day), on the usual gap.
When can Honolulu and Singapore meet?
Nine-to-five in Honolulu and nine-to-five in Singapore do not overlap at all. One side has to take the call outside working hours, and with 18 hours between them it is worth deciding in advance which side that is.
Other pairs
- Honolulu to Hong Kong
- Honolulu to Beijing
- Honolulu to Manila
- Honolulu to Perth
- Honolulu to Tokyo
- Honolulu to Seoul
- Honolulu to Brisbane
- Honolulu to Sydney
- Honolulu to Melbourne
- Honolulu to Auckland
Every Honolulu pair · Every Singapore pair · All city pairs · Time zones by abbreviation