Offset
The time difference between Rome and Honolulu is 12 hours.
Rome (CEST) is ahead of Honolulu (HST).
CEST: UTC+2
HST: UTC-10
Rome is currently observing daylight saving time; Honolulu is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Rome and Honolulu don't overlap on the same weekday. Honolulu is 12 hours behind Rome.
With some flexibility, there’s a workable window outside standard hours:
- 7 PM–8 PM in Rome (7 AM–8 AM in Honolulu) — suggest 7:00 PM Rome (7:00 AM Honolulu).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Italy
- New Year's DayThu, Jan 1
- EpiphanyTue, Jan 6
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- Liberation DaySat, Apr 25
- International Workers DayFri, May 1
- Republic DayTue, Jun 2
- Assumption DaySat, Aug 15
- St. Francis of Assisi's DaySun, Oct 4
- All Saints DaySun, Nov 1
- Immaculate ConceptionTue, Dec 8
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Rome | Honolulu | Day |
|---|---|---|
| 12:00 am | 12:00 pm | -1 day |
| 1:00 am | 1:00 pm | -1 day |
| 2:00 am | 2:00 pm | -1 day |
| 3:00 am | 3:00 pm | -1 day |
| 4:00 am | 4:00 pm | -1 day |
| 5:00 am | 5:00 pm | -1 day |
| 6:00 am | 6:00 pm | -1 day |
| 7:00 am | 7:00 pm | -1 day |
| 8:00 am | 8:00 pm | -1 day |
| 9:00 am | 9:00 pm | -1 day |
| 10:00 am | 10:00 pm | -1 day |
| 11:00 am | 11:00 pm | -1 day |
| 12:00 pm | 12:00 am | Same day |
| 1:00 pm | 1:00 am | Same day |
| 2:00 pm | 2:00 am | Same day |
| 3:00 pm | 3:00 am | Same day |
| 4:00 pm | 4:00 am | Same day |
| 5:00 pm | 5:00 am | Same day |
| 6:00 pm | 6:00 am | Same day |
| 7:00 pm | 7:00 am | Same day |
| 8:00 pm | 8:00 am | Same day |
| 9:00 pm | 9:00 am | Same day |
| 10:00 pm | 10:00 am | Same day |
| 11:00 pm | 11:00 am | Same day |
Daylight saving time
Rome observes daylight saving time; Honolulu does not. The offset between the two zones changes when Rome transitions: on Sunday, October 25, 2026, clocks fall back from CEST to CET.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:36 AM
- Sunset
- 8:44 PM
- Day length
- 15h 8m
- Sunrise
- 5:50 AM
- Sunset
- 7:13 PM
- Day length
- 13h 23m
Daylight overlap: 1h 37m — 5:36 AM–7:13 AM in Rome (5:36 PM–7:13 PM in Honolulu). Both locations are in daylight during this window.
Cities in these zones
Other cities in Central European Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central European Time
- CIA
- FCO
- BGY
- LIN
- MXP
- NAP
- FLR
- TSF
- VCE
Airports in Hawaii Time
- HNL
Related conversions
Common conversions
- What is 9:00 am Rome in Honolulu?
- 9:00 am Rome is 9:00 pm Honolulu, the previous day.
- What is 12:00 pm Rome in Honolulu?
- 12:00 pm Rome is 12:00 am Honolulu.
- What is 12:30 pm Rome in Honolulu?
- 12:30 pm Rome is 12:30 am Honolulu.
- What is 2:00 pm Rome in Honolulu?
- 2:00 pm Rome is 2:00 am Honolulu.
- What is 5:00 pm Rome in Honolulu?
- 5:00 pm Rome is 5:00 am Honolulu.
- What is 11:30 pm Rome in Honolulu?
- 11:30 pm Rome is 11:30 am Honolulu.