Offset
The time difference between Hawaii Time and Coordinated Universal Time is 10 hours.
Hawaii Time (HST) is behind Coordinated Universal Time (UTC).
HST: UTC-10
UTC: UTC
Neither Hawaii Time nor Coordinated Universal Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Hawaii Time and Coordinated Universal Time don't overlap on the same weekday. Coordinated Universal Time is 10 hours ahead of Hawaii Time.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–10 AM in Hawaii Time (5 PM–8 PM in Coordinated Universal Time) — suggest 8:00 AM Hawaii Time (6:00 PM Coordinated Universal Time).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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.
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
Hawaii Time is also known as HST. To call United States, dial +1.
Coordinated Universal Time is also known as UTC.
Coordinated Universal Time is approximately 10,350 miles northeast of Hawaii Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| HST | UTC | Day |
|---|---|---|
| 12:00 am | 10:00 am | Same day |
| 1:00 am | 11:00 am | Same day |
| 2:00 am | 12:00 pm | Same day |
| 3:00 am | 1:00 pm | Same day |
| 4:00 am | 2:00 pm | Same day |
| 5:00 am | 3:00 pm | Same day |
| 6:00 am | 4:00 pm | Same day |
| 7:00 am | 5:00 pm | Same day |
| 8:00 am | 6:00 pm | Same day |
| 9:00 am | 7:00 pm | Same day |
| 10:00 am | 8:00 pm | Same day |
| 11:00 am | 9:00 pm | Same day |
| 12:00 pm | 10:00 pm | Same day |
| 1:00 pm | 11:00 pm | Same day |
| 2:00 pm | 12:00 am | +1 day |
| 3:00 pm | 1:00 am | +1 day |
| 4:00 pm | 2:00 am | +1 day |
| 5:00 pm | 3:00 am | +1 day |
| 6:00 pm | 4:00 am | +1 day |
| 7:00 pm | 5:00 am | +1 day |
| 8:00 pm | 6:00 am | +1 day |
| 9:00 pm | 7:00 am | +1 day |
| 10:00 pm | 8:00 am | +1 day |
| 11:00 pm | 9:00 am | +1 day |
Daylight saving time
Neither Hawaii Time nor Coordinated Universal Time 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
- 5:50 AM
- Sunset
- 7:12 PM
- Day length
- 13h 22m
- Sunrise
- 5:56 AM
- Sunset
- 6:03 PM
- Day length
- 12h 7m
Cities in these zones
Cities in Hawaii Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Hawaii Time
- HNL
Related conversions
Common conversions
- What is 9:00 am HST in UTC?
- 9:00 am HST is 7:00 pm UTC.
- What is 12:00 pm HST in UTC?
- 12:00 pm HST is 10:00 pm UTC.
- What is 12:30 pm HST in UTC?
- 12:30 pm HST is 10:30 pm UTC.
- What is 2:00 pm HST in UTC?
- 2:00 pm HST is 12:00 am UTC, the next day.
- What is 5:00 pm HST in UTC?
- 5:00 pm HST is 3:00 am UTC, the next day.
- What is 11:30 pm HST in UTC?
- 11:30 pm HST is 9:30 am UTC, the next day.