HST → UTC Converter
Reverse of the UTC↔HST pair — Hawaii coordinating with global technical reference across a 10.0-hour gap.
HST → UTC
8:40 AM
Hawaii-Aleutian Standard Time (HST)
Thursday, June 11, 2026
UTC-10 (DST active)
6:40 PM
Coordinated Universal Time (UTC)
Thursday, June 11, 2026
UTC+0 (DST active)
Time Zone Converter
HST·Honolulu
8:40 AM
Thursday, June 11, 2026
UTC·Universal
6:40 PM
Thursday, June 11, 2026
Compare Times
| HST | UTC |
|---|
Morning
| HST | UTC |
|---|---|
| 12:00 AM HST | 10:00 AM UTC |
| 1:00 AM HST | 11:00 AM UTC |
| 2:00 AM HST | 12:00 PM UTC |
| 3:00 AM HST | 1:00 PM UTC |
| 4:00 AM HST | 2:00 PM UTC |
| 5:00 AM HST | 3:00 PM UTC |
| 6:00 AM HST | 4:00 PM UTC |
| 7:00 AM HST | 5:00 PM UTC |
| 8:00 AM HST | 6:00 PM UTC |
| 9:00 AM HST | 7:00 PM UTC |
| 10:00 AM HST | 8:00 PM UTC |
| 11:00 AM HST | 9:00 PM UTC |
Afternoon
| HST | UTC |
|---|---|
| 12:00 PM HST | 10:00 PM UTC |
| 1:00 PM HST | 11:00 PM UTC |
| 2:00 PM HST | 12:00 AM UTC |
| 3:00 PM HST | 1:00 AM UTC |
| 4:00 PM HST | 2:00 AM UTC |
Evening
| HST | UTC |
|---|---|
| 5:00 PM HST | 3:00 AM UTC |
| 6:00 PM HST | 4:00 AM UTC |
| 7:00 PM HST | 5:00 AM UTC |
| 8:00 PM HST | 6:00 AM UTC |
| 9:00 PM HST | 7:00 AM UTC |
| 10:00 PM HST | 8:00 AM UTC |
| 11:00 PM HST | 9:00 AM UTC |
Frequently Asked Questions: HST to UTC
What is the time difference between Hawaii Time and Coordinated Universal Time?
UTC is 10 hours ahead of HST (standard time).
What time is midnight in HST in UTC?
Midnight (12:00 AM) in Hawaii Time translates to 10:00 AM UTC in Coordinated Universal Time.
When do business hours overlap between HST and UTC?
Standard 9–5 business hours do not overlap between Hawaii Time and Coordinated Universal Time. The closest scheduling window is 07:00–08:00 HST (17:00–18:00 UTC).
Common Time Conversions
EST · New York →
CST · Chicago →
MST · Denver →
PST · Los Angeles →
AKST · Anchorage →
HST · Honolulu →
UTC · Universal →
GMT · London →
IST · New Delhi →
CET · Paris →
How Time Zone Conversion Works
Time zone conversion works by comparing the UTC offset of one location to another. Every city or region is measured relative to Coordinated Universal Time (UTC), which acts as the global reference point for civil time.
UTC is 10 hours ahead of HST (standard time).
Daylight Saving Time: Neither HST nor UTC observes Daylight Saving Time. The 10-hour offset is constant year-round with no seasonal variation.
Best time to call Universal from Honolulu
Planning a remote meeting or international call? The optimal business hours overlap between Honolulu and Universal is challenging, with few shared business hours between the two zones.
Try Meeting Planner for multi-city group scheduling →HST
07:00–08:00
Hawaii Time
UTC
17:00–18:00
Universal Time
Recommended time: 07:00 HST / 17:00 UTC
DST schedule for 2026
Current-year daylight saving start and end dates for the selected zones.
HST · Hawaii Time
Standard offset −10:00
Hawaii Time remains on a constant standard offset for the year.
Hawaii does not observe DST. The Aleutian Islands portion of HAST does observe DST (becoming HADT, UTC−9), but population there is negligible. For practical purposes HST is a fixed-offset zone.
UTC · Universal Time
Standard offset +00:00
Universal Time remains on a constant standard offset for the year.
UTC is the global reference time standard. By definition, it does not observe daylight saving.
Principal Cities
HST — Hawaii Time
- HonoluluUnited States
- Pearl CityUnited States
- HiloUnited States
- KailuaUnited States
UTC — Universal Time
- LondonUnited Kingdom
- AccraGhana
- DakarSenegal
- ReykjavikIceland