Time difference between Honolulu and Singapore
18 hours
Singapore is 18 hours ahead of Honolulu.
Does daylight saving change it?
No. The gap is the same all year. Neither city observes daylight saving.
Overlapping work hours
Between 15:00 and 18:00 in Honolulu, Singapore is also at work — 3 hours a day.
Honolulu time → Singapore time
| 00:00 | 18:00 |
|---|---|
| 01:00 | 19:00 |
| 02:00 | 20:00 |
| 03:00 | 21:00 |
| 04:00 | 22:00 |
| 05:00 | 23:00 |
| 06:00 | 00:00next day |
| 07:00 | 01:00next day |
| 08:00 | 02:00next day |
| 09:00 | 03:00next day |
| 10:00 | 04:00next day |
| 11:00 | 05:00next day |
| 12:00 | 06:00next day |
| 13:00 | 07:00next day |
| 14:00 | 08:00next day |
| 15:00 | 09:00next day |
| 16:00 | 10:00next day |
| 17:00 | 11:00next day |
| 18:00 | 12:00next day |
| 19:00 | 13:00next day |
| 20:00 | 14:00next day |
| 21:00 | 15:00next day |
| 22:00 | 16:00next day |
| 23:00 | 17:00next day |
Standard time (January). During daylight saving each row shifts by an hour.
Frequently asked questions
Q. How many hours is Honolulu ahead of Singapore?
18 hours on standard time.
Q. What time is it in Singapore when it is noon in Honolulu?
Read the 12:00 row of the 24-hour table below. The table is on standard time, so each row shifts an hour during daylight saving.
Q. When should we schedule a meeting?
The two cities' work hours (09:00–18:00) overlap for 3 hours a day. Anything inside that window catches both sides at work.