HST to WAT Converter
WAT is 11 hours ahead of HST. 9:00 AM HST = 8:00 PM WAT.
WAT is 11 hours ahead of HST. To convert HST to WAT, add 11 hours to the HST time: 9:00 AM HST = 8:00 PM WAT.
HST (Hawaii-Aleutian Time) is used in Hawaii (all year, no daylight saving time). WAT (West Africa Time) is used in Nigeria, Cameroon, Angola, DR Congo (west).
HST to WAT time conversion table
HST to WAT on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| HST | WAT | Day |
|---|---|---|
| 12:00 AM HST | 11:00 AM WAT | — |
| 1:00 AM HST | 12:00 PM WAT | — |
| 2:00 AM HST | 1:00 PM WAT | — |
| 3:00 AM HST | 2:00 PM WAT | — |
| 4:00 AM HST | 3:00 PM WAT | — |
| 5:00 AM HST | 4:00 PM WAT | — |
| 6:00 AM HST | 5:00 PM WAT | — |
| 7:00 AM HST | 6:00 PM WAT | — |
| 8:00 AM HST | 7:00 PM WAT | — |
| 9:00 AM HST | 8:00 PM WAT | — |
| 10:00 AM HST | 9:00 PM WAT | — |
| 11:00 AM HST | 10:00 PM WAT | night |
| 12:00 PM HST | 11:00 PM WAT | night |
| 1:00 PM HST | 12:00 AM WAT | next day |
| 2:00 PM HST | 1:00 AM WAT | next day |
| 3:00 PM HST | 2:00 AM WAT | next day |
| 4:00 PM HST | 3:00 AM WAT | next day |
| 5:00 PM HST | 4:00 AM WAT | next day |
| 6:00 PM HST | 5:00 AM WAT | next day |
| 7:00 PM HST | 6:00 AM WAT | next day |
| 8:00 PM HST | 7:00 AM WAT | next day |
| 9:00 PM HST | 8:00 AM WAT | next day |
| 10:00 PM HST | 9:00 AM WAT | next day |
| 11:00 PM HST | 10:00 AM WAT | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert HST to WAT
Add 11 hours to the HST time to get WAT.
Example: 9:00 AM HST = 8:00 PM WAT.
Across midnight: 10:00 PM HST = 9:00 AM WAT (next day). The date changes, so always check the day as well as the hour.
Time difference between HST and WAT
The time difference between HST and WAT is 11 hours all year – WAT is ahead of HST.
HST and WAT during daylight saving time
- HST does not observe daylight saving time; it stays on UTC−10 all year.
- WAT does not observe daylight saving time; it stays on UTC+1 all year.
Best time for a meeting between HST and WAT
HST and WAT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM HST, which is 6:00 PM WAT.
HST to WAT FAQ
What is the time difference between HST and WAT?
WAT is 11 hours ahead of HST all year. 9:00 AM HST = 8:00 PM WAT.
What is 9 AM HST in WAT?
9:00 AM HST is 8:00 PM WAT.
What is 12 PM (noon) HST in WAT?
12:00 PM HST is 11:00 PM WAT.
Is WAT ahead of or behind HST?
WAT is 11 hours ahead of HST, so it is later in WAT 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 WAT change for daylight saving time?
No. WAT 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 WAT?
HST and WAT have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM HST, which is 6:00 PM WAT.
Related conversions
Convert WAT to HST
Convert HST to other time zones
Convert other time zones to WAT
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.