Time difference between Rome and Honolulu
Honolulu is 12 hours behind Rome
Rome, Italy is UTC+1 · Honolulu, the United States is UTC−10 — on standard time
The gap is not the same all year
Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Rome goes forward on the last Sunday in March and back on the last Sunday in October and Honolulu does not change its clocks.
| Rome / Honolulu clocks | Difference | How long |
|---|---|---|
| summer / standard | 12 hours behind | about 30 weeks |
| standard / standard | 11 hours behind | about 22 weeks |
Honolulu stays put all year while Rome moves, so a meeting fixed in Honolulu's calendar shifts by an hour twice a year at Rome's end.
When they can both be at their desks
Nine-to-five in Rome and nine-to-five in Honolulu do not overlap at all. With 12 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.
Rome to Honolulu, hour by hour
| Rome | Honolulu |
|---|---|
| 12:00 AM | 12:00 PM (previous day) |
| 1:00 AM | 1:00 PM (previous day) |
| 2:00 AM | 2:00 PM (previous day) |
| 3:00 AM | 3:00 PM (previous day) |
| 4:00 AM | 4:00 PM (previous day) |
| 5:00 AM | 5:00 PM (previous day) |
| 6:00 AM | 6:00 PM (previous day) |
| 7:00 AM | 7:00 PM (previous day) |
| 8:00 AM | 8:00 PM (previous day) |
| 9:00 AM | 9:00 PM (previous day) |
| 10:00 AM | 10:00 PM (previous day) |
| 11:00 AM | 11:00 PM (previous day) |
| 12:00 PM | 12:00 AM |
| 1:00 PM | 1:00 AM |
| 2:00 PM | 2:00 AM |
| 3:00 PM | 3:00 AM |
| 4:00 PM | 4:00 AM |
| 5:00 PM | 5:00 AM |
| 6:00 PM | 6:00 AM |
| 7:00 PM | 7:00 AM |
| 8:00 PM | 8:00 AM |
| 9:00 PM | 9:00 AM |
| 10:00 PM | 10:00 AM |
| 11:00 PM | 11:00 AM |
On the usual gap of 12 hours.
Frequently asked questions
What is the time difference between Rome and Honolulu?
Honolulu is 12 hours behind Rome for most of the year. It is not the same all year — there is one other gap, because Rome goes forward on the last Sunday in March and back on the last Sunday in October and Honolulu does not change its clocks.
Is Honolulu ahead of Rome?
No — Honolulu is 12 hours behind. Rome is UTC+1 and Honolulu is UTC−10 on standard time.
What time is 9 AM in Rome in Honolulu?
9:00 PM (previous day), on the usual gap.
When can Rome and Honolulu meet?
Nine-to-five in Rome and nine-to-five in Honolulu do not overlap at all. One side has to take the call outside working hours, and with 12 hours between them it is worth deciding in advance which side that is.
Other pairs
- Rome to São Paulo
- Rome to Buenos Aires
- Rome to Lima
- Rome to Johannesburg
- Rome to Nairobi
- Amsterdam to London
- Amsterdam to Dublin
- Amsterdam to Lisbon
- Amsterdam to Athens
- Amsterdam to Helsinki
Every Rome pair · Every Honolulu pair · All city pairs · Time zones by abbreviation