What is SAST in HST?
Hawaii Standard Time is 12 hours behind
South Africa Standard Time is on UTC+2:00 and Hawaii Standard Time is on UTC−10:00 right now. That gap holds all year, because both zones change their clocks together.
- Time in Johannesburg
- 4:15 am
- Time in Honolulu
- 4:15 pm
- Difference
- −12 h
- Next clock change
- Neither zone
Convert a time
HST — Hawaii Standard Time
4:00 pm
Tue, the previous day
Daylight saving
South Africa Standard Time
South Africa Standard Time stays on SAST all year, so its offset from UTC never moves.
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
SAST to HST conversion table
Every hour of Wednesday, September 23, 2026, converted from South Africa Standard Time to Hawaii Standard Time. 12 of the 24 hours fall on a different calendar day in Honolulu, which is marked.
- 12:00 am SAST
- 12:00 pm HST−1 day
- 1:00 am SAST
- 1:00 pm HST−1 day
- 2:00 am SAST
- 2:00 pm HST−1 day
- 3:00 am SAST
- 3:00 pm HST−1 day
- 4:00 am SAST
- 4:00 pm HST−1 day
- 5:00 am SAST
- 5:00 pm HST−1 day
- 6:00 am SAST
- 6:00 pm HST−1 day
- 7:00 am SAST
- 7:00 pm HST−1 day
- 8:00 am SAST
- 8:00 pm HST−1 day
- 9:00 am SAST
- 9:00 pm HST−1 day
- 10:00 am SAST
- 10:00 pm HST−1 day
- 11:00 am SAST
- 11:00 pm HST−1 day
- 12:00 pm SAST
- 12:00 am HST
- 1:00 pm SAST
- 1:00 am HST
- 2:00 pm SAST
- 2:00 am HST
- 3:00 pm SAST
- 3:00 am HST
- 4:00 pm SAST
- 4:00 am HST
- 5:00 pm SAST
- 5:00 am HST
- 6:00 pm SAST
- 6:00 am HST
- 7:00 pm SAST
- 7:00 am HST
- 8:00 pm SAST
- 8:00 am HST
- 9:00 pm SAST
- 9:00 am HST
- 10:00 pm SAST
- 10:00 am HST
- 11:00 pm SAST
- 11:00 am HST
Scheduling between the two
There is no overlap between a nine-to-six working day in Johannesburg and one in Honolulu — the gap is too wide. A call has to sit early or late for one side. Early morning in Johannesburg is the usual compromise, since that is late afternoon or evening in Honolulu.
Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving