Offset
The time difference between Hawaii Time and South Africa Time is 12 hours.
Hawaii Time (HST) is behind South Africa Time (SAST).
HST: UTC-10
SAST: UTC+2
Neither Hawaii Time nor South Africa Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Hawaii Time and South Africa Time don't overlap on the same weekday. South Africa Time is 12 hours ahead of Hawaii Time.
With some flexibility, there are two workable windows outside standard hours, depending on which side takes the early or late slot:
- 7 AM–8 AM in Hawaii Time (7 PM–8 PM in South Africa Time) — suggest 7:00 AM Hawaii Time (7:00 PM South Africa Time).
- 7 PM–8 PM in Hawaii Time (7 AM–8 AM the next day in South Africa Time) — suggest 7:00 PM Hawaii Time (7:00 AM South Africa Time).
Either is an early start or late finish for one side, but workable 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
South Africa
- New Year's DayThu, Jan 1
- Human Rights DaySat, Mar 21
- Good FridayFri, Apr 3
- Family DayMon, Apr 6
- Freedom DayMon, Apr 27
- Workers' DayFri, May 1
- Youth DayTue, Jun 16
- National Women's DayMon, Aug 10
- Heritage DayThu, Sep 24
- Day of ReconciliationWed, Dec 16
- Christmas DayFri, Dec 25
- Day of GoodwillSat, Dec 26
About these zones
Hawaii Time is also known as HST. To call United States, dial +1.
South Africa Time is also known as SAST. To call South Africa, dial +27.
South Africa Time is approximately 11,950 miles southwest of Hawaii Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| HST | SAST | Day |
|---|---|---|
| 12:00 am | 12:00 pm | Same day |
| 1:00 am | 1:00 pm | Same day |
| 2:00 am | 2:00 pm | Same day |
| 3:00 am | 3:00 pm | Same day |
| 4:00 am | 4:00 pm | Same day |
| 5:00 am | 5:00 pm | Same day |
| 6:00 am | 6:00 pm | Same day |
| 7:00 am | 7:00 pm | Same day |
| 8:00 am | 8:00 pm | Same day |
| 9:00 am | 9:00 pm | Same day |
| 10:00 am | 10:00 pm | Same day |
| 11:00 am | 11:00 pm | Same day |
| 12:00 pm | 12:00 am | +1 day |
| 1:00 pm | 1:00 am | +1 day |
| 2:00 pm | 2:00 am | +1 day |
| 3:00 pm | 3:00 am | +1 day |
| 4:00 pm | 4:00 am | +1 day |
| 5:00 pm | 5:00 am | +1 day |
| 6:00 pm | 6:00 am | +1 day |
| 7:00 pm | 7:00 am | +1 day |
| 8:00 pm | 8:00 am | +1 day |
| 9:00 pm | 9:00 am | +1 day |
| 10:00 pm | 10:00 am | +1 day |
| 11:00 pm | 11:00 am | +1 day |
Daylight saving time
Neither Hawaii Time nor South Africa 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
- 6:50 AM
- Sunset
- 5:24 PM
- Day length
- 10h 34m
Daylight overlap: 22m — 6:50 PM–7:12 PM in Hawaii Time (6:50 AM–7:12 AM in South Africa Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Hawaii Time
Cities in South Africa Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Hawaii Time
- HNL
Airports in South Africa Time
- HLA
- JNB
- CPT
- DUR
Related conversions
Common conversions
- What is 9:00 am HST in SAST?
- 9:00 am HST is 9:00 pm SAST.
- What is 12:00 pm HST in SAST?
- 12:00 pm HST is 12:00 am SAST, the next day.
- What is 12:30 pm HST in SAST?
- 12:30 pm HST is 12:30 am SAST, the next day.
- What is 2:00 pm HST in SAST?
- 2:00 pm HST is 2:00 am SAST, the next day.
- What is 5:00 pm HST in SAST?
- 5:00 pm HST is 5:00 am SAST, the next day.
- What is 11:30 pm HST in SAST?
- 11:30 pm HST is 11:30 am SAST, the next day.