HST to ICT Converter
ICT is 17 hours ahead of HST. 9:00 AM HST = 2:00 AM ICT (next day).
ICT is 17 hours ahead of HST. To convert HST to ICT, add 17 hours to the HST time: 9:00 AM HST = 2:00 AM ICT (next day).
HST (Hawaii-Aleutian Time) is used in Hawaii (all year, no daylight saving time). ICT (Indochina Time) is used in Thailand, Vietnam, Cambodia, Laos.
HST to ICT time conversion table
HST to ICT on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| HST | ICT | Day |
|---|---|---|
| 12:00 AM HST | 5:00 PM ICT | — |
| 1:00 AM HST | 6:00 PM ICT | — |
| 2:00 AM HST | 7:00 PM ICT | — |
| 3:00 AM HST | 8:00 PM ICT | — |
| 4:00 AM HST | 9:00 PM ICT | — |
| 5:00 AM HST | 10:00 PM ICT | night |
| 6:00 AM HST | 11:00 PM ICT | night |
| 7:00 AM HST | 12:00 AM ICT | next day |
| 8:00 AM HST | 1:00 AM ICT | next day |
| 9:00 AM HST | 2:00 AM ICT | next day |
| 10:00 AM HST | 3:00 AM ICT | next day |
| 11:00 AM HST | 4:00 AM ICT | next day |
| 12:00 PM HST | 5:00 AM ICT | next day |
| 1:00 PM HST | 6:00 AM ICT | next day |
| 2:00 PM HST | 7:00 AM ICT | next day |
| 3:00 PM HST | 8:00 AM ICT | next day |
| 4:00 PM HST | 9:00 AM ICT | work hours |
| 5:00 PM HST | 10:00 AM ICT | next day |
| 6:00 PM HST | 11:00 AM ICT | next day |
| 7:00 PM HST | 12:00 PM ICT | next day |
| 8:00 PM HST | 1:00 PM ICT | next day |
| 9:00 PM HST | 2:00 PM ICT | next day |
| 10:00 PM HST | 3:00 PM ICT | next day |
| 11:00 PM HST | 4:00 PM ICT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert HST to ICT
Add 17 hours to the HST time to get ICT.
Example: 9:00 AM HST = 2:00 AM ICT (next day).
Across midnight: 10:00 PM HST = 3:00 PM ICT (next day). The date changes, so always check the day as well as the hour.
Time difference between HST and ICT
The time difference between HST and ICT is 17 hours all year – ICT is ahead of HST.
HST and ICT during daylight saving time
- HST does not observe daylight saving time; it stays on UTC−10 all year.
- ICT does not observe daylight saving time; it stays on UTC+7 all year.
Best time for a meeting between HST and ICT
HST and ICT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 2:00 PM HST, which is 7:00 AM ICT.
HST to ICT FAQ
What is the time difference between HST and ICT?
ICT is 17 hours ahead of HST all year. 9:00 AM HST = 2:00 AM ICT (next day).
What is 9 AM HST in ICT?
9:00 AM HST is 2:00 AM ICT (next day).
What is 12 PM (noon) HST in ICT?
12:00 PM HST is 5:00 AM ICT (next day).
Is ICT ahead of or behind HST?
ICT is 17 hours ahead of HST, so it is later in ICT than in HST.
Does HST change for daylight saving time?
No. HST stays on the same offset all year, so conversions never shift for daylight saving time.
Does ICT change for daylight saving time?
No. ICT stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between HST and ICT?
HST and ICT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 2:00 PM HST, which is 7:00 AM ICT.
Related conversions
Convert ICT to HST
Convert HST to other time zones
Convert other time zones to ICT
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.