Time difference between Honolulu and Perth
Perth is 18 hours ahead of Honolulu
Honolulu, the United States is UTC−10 · Perth, Australia is UTC+8 — on standard time
The gap holds all year
Neither city changes its clocks — Honolulu does not change its clocks and Perth 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 Perth 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 Perth, hour by hour
| Honolulu | Perth |
|---|---|
| 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 Perth?
Perth is 18 hours ahead of Honolulu for most of the year. The gap never changes: Honolulu does not change its clocks and Perth does not change its clocks.
Is Perth ahead of Honolulu?
Yes — Perth is 18 hours ahead. Honolulu is UTC−10 and Perth is UTC+8 on standard time.
What time is 9 AM in Honolulu in Perth?
3:00 AM (next day), on the usual gap.
When can Honolulu and Perth meet?
Nine-to-five in Honolulu and nine-to-five in Perth 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 Tokyo
- Honolulu to Seoul
- Honolulu to Brisbane
- Honolulu to Sydney
- Honolulu to Melbourne
- Honolulu to Auckland
- Honolulu to New York
- Honolulu to Toronto
- Honolulu to Chicago
- Honolulu to Mexico City
Every Honolulu pair · Every Perth pair · All city pairs · Time zones by abbreviation