Time difference between Sydney and Honolulu: 20 hours
Sydney
Australia · UTC+10
--:--:--
Honolulu
United States (Hawaii) · UTC-10
--:--:--
Sydney is 20 hours ahead of Honolulu
Best time for a call or meeting
Sydney 09:00–14:00 = Honolulu 13:00–18:00
Both cities are within business hours (9:00–18:00).
Convert a specific time
→ Honolulu
Hour-by-hour conversion
| Sydney | Honolulu |
|---|---|
| 00:00 | 04:00 |
| 01:00 | 05:00 |
| 02:00 | 06:00 |
| 03:00 | 07:00 |
| 04:00 | 08:00 |
| 05:00 | 09:00 |
| 06:00 | 10:00 |
| 07:00 | 11:00 |
| 08:00 | 12:00 |
| 09:00 | 13:00 |
| 10:00 | 14:00 |
| 11:00 | 15:00 |
| 12:00 | 16:00 |
| 13:00 | 17:00 |
| 14:00 | 18:00 |
| 15:00 | 19:00 |
| 16:00 | 20:00 |
| 17:00 | 21:00 |
| 18:00 | 22:00 |
| 19:00 | 23:00 |
| 20:00 | 00:00 |
| 21:00 | 01:00 |
| 22:00 | 02:00 |
| 23:00 | 03:00 |
Business hours 9–18 Waking hours 7–22 Night / early morning
Daylight saving time can change the difference by season. Shown values reflect the current offset.
Frequently asked questions
How many hours is the time difference between Sydney and Honolulu?
Sydney is 20 hours ahead of Honolulu. When it is 12:00 noon in Sydney, it is 16:00 (previous day) in Honolulu.
Does daylight saving time affect the difference?
Yes. One or both places observe daylight saving time, so the difference changes with the season. This page shows the current difference.
What is the best time for a call or meeting?
Sydney 09:00–14:00 = Honolulu 13:00–18:00. Both cities are within business hours (9:00–18:00).
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