Offset
The time difference between Istanbul and Honolulu is 13 hours.
Istanbul (TRT) is ahead of Honolulu (HST).
TRT: UTC+3
HST: UTC-10
Neither Istanbul nor Honolulu is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Istanbul and Honolulu don't overlap on the same weekday. Honolulu is 13 hours behind Istanbul.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
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.
Turkey
- New Year's DayThu, Jan 1
- National Independence & Children's DayThu, Apr 23
- Labour DayFri, May 1
- Atatürk Commemoration & Youth DayTue, May 19
- Democracy and National Unity DayWed, Jul 15
- Victory DaySun, Aug 30
- Republic DayThu, Oct 29
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.
| Istanbul | Honolulu | Day |
|---|---|---|
| 12:00 am | 11:00 am | -1 day |
| 1:00 am | 12:00 pm | -1 day |
| 2:00 am | 1:00 pm | -1 day |
| 3:00 am | 2:00 pm | -1 day |
| 4:00 am | 3:00 pm | -1 day |
| 5:00 am | 4:00 pm | -1 day |
| 6:00 am | 5:00 pm | -1 day |
| 7:00 am | 6:00 pm | -1 day |
| 8:00 am | 7:00 pm | -1 day |
| 9:00 am | 8:00 pm | -1 day |
| 10:00 am | 9:00 pm | -1 day |
| 11:00 am | 10:00 pm | -1 day |
| 12:00 pm | 11:00 pm | -1 day |
| 1:00 pm | 12:00 am | Same day |
| 2:00 pm | 1:00 am | Same day |
| 3:00 pm | 2:00 am | Same day |
| 4:00 pm | 3:00 am | Same day |
| 5:00 pm | 4:00 am | Same day |
| 6:00 pm | 5:00 am | Same day |
| 7:00 pm | 6:00 am | Same day |
| 8:00 pm | 7:00 am | Same day |
| 9:00 pm | 8:00 am | Same day |
| 10:00 pm | 9:00 am | Same day |
| 11:00 pm | 10:00 am | Same day |
Daylight saving time
Neither Istanbul nor Honolulu observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:33 AM
- Sunset
- 8:36 PM
- Day length
- 15h 4m
- Sunrise
- 5:50 AM
- Sunset
- 7:14 PM
- Day length
- 13h 24m
Daylight overlap: 2h 41m — 5:33 AM–8:14 AM in Istanbul (4:33 PM–7:14 PM in Honolulu). Both locations are in daylight during this window.
Cities in these zones
Other cities in Turkey Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Turkey Time
- IST
- SAW
- ESB
- YEI
- ADB
- GZT
- DIY
- ADA
- COV
- ASR
Airports in Hawaii Time
- HNL
Related conversions
Common conversions
- What is 9:00 am Istanbul in Honolulu?
- 9:00 am Istanbul is 8:00 pm Honolulu, the previous day.
- What is 12:00 pm Istanbul in Honolulu?
- 12:00 pm Istanbul is 11:00 pm Honolulu, the previous day.
- What is 12:30 pm Istanbul in Honolulu?
- 12:30 pm Istanbul is 11:30 pm Honolulu, the previous day.
- What is 2:00 pm Istanbul in Honolulu?
- 2:00 pm Istanbul is 1:00 am Honolulu.
- What is 5:00 pm Istanbul in Honolulu?
- 5:00 pm Istanbul is 4:00 am Honolulu.
- What is 11:30 pm Istanbul in Honolulu?
- 11:30 pm Istanbul is 10:30 am Honolulu.