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