What is HST in ICT?
Indochina Time is 17 hours ahead
Hawaii Standard Time is on UTC−10:00 and Indochina Time is on UTC+7:00 right now. That gap holds all year, because both zones change their clocks together.
- Time in Honolulu
- 4:56 pm
- Time in Bangkok
- 9:56 am
- Difference
- +17 h
- Next clock change
- Neither zone
Convert a time
ICT — Indochina Time
9:00 am
Wed, the next day
Daylight saving
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
Indochina Time
Indochina Time stays on ICT all year, so its offset from UTC never moves.
HST to ICT conversion table
Every hour of Tuesday, September 22, 2026, converted from Hawaii Standard Time to Indochina Time. 17 of the 24 hours fall on a different calendar day in Bangkok, which is marked.
- 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
- 6:00 am HST
- 11:00 pm ICT
- 7:00 am HST
- 12:00 am ICT+1 day
- 8:00 am HST
- 1:00 am ICT+1 day
- 9:00 am HST
- 2:00 am ICT+1 day
- 10:00 am HST
- 3:00 am ICT+1 day
- 11:00 am HST
- 4:00 am ICT+1 day
- 12:00 pm HST
- 5:00 am ICT+1 day
- 1:00 pm HST
- 6:00 am ICT+1 day
- 2:00 pm HST
- 7:00 am ICT+1 day
- 3:00 pm HST
- 8:00 am ICT+1 day
- 4:00 pm HST
- 9:00 am ICT+1 day
- 5:00 pm HST
- 10:00 am ICT+1 day
- 6:00 pm HST
- 11:00 am ICT+1 day
- 7:00 pm HST
- 12:00 pm ICT+1 day
- 8:00 pm HST
- 1:00 pm ICT+1 day
- 9:00 pm HST
- 2:00 pm ICT+1 day
- 10:00 pm HST
- 3:00 pm ICT+1 day
- 11:00 pm HST
- 4:00 pm ICT+1 day
Scheduling between the two
Working hours overlap from 4:00 pm to 6:00 pm HST, which is 9:00 am to 11:00 am ICT. Anything inside that window falls in the normal working day at both ends.
Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving
Indochina Time (ICT) is used in Thailand, Vietnam, Cambodia and Laos