Time in GST and HDT
The time difference between Gulf Standard Time (GST) and Hawaii–Aleutian Daylight Time (HDT) is 13 hours. Hawaii–Aleutian Daylight Time is 13 hours behind Gulf Standard Time.
This means 9am GST is 8pm HDT (previous day) and 5pm GST is 4am HDT.
Gulf Standard Time
- The current local time in GST is 2:45 am (July 3, 2026)
- GST time zone offset is UTC+04:00
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 7:45 am (July 3, 2026)
- HDT time zone offset is UTC-09:00
How to convert Gulf Standard Time to Hawaii–Aleutian Daylight Time?
Subtract 13 hours from Gulf Standard Time to get Hawaii–Aleutian Daylight Time.
Time in GST
00:00
Time in HDT
00:00
Use the slider above to convert Gulf Standard Time to Hawaii–Aleutian Daylight Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| GST | HDT |
|---|---|
| 12am | 11am |
| 1am | 12pm |
| 2am | 1pm |
| 3am | 2pm |
| 4am | 3pm |
| 5am | 4pm |
| 6am | 5pm |
| 7am | 6pm |
| 8am | 7pm |
| 9am | 8pm |
| 10am | 9pm |
| 11am | 10pm |
| 12pm | 11pm |
| 1pm | 12am |
| 2pm | 1am |
| 3pm | 2am |
| 4pm | 3am |
| 5pm | 4am |
| 6pm | 5am |
| 7pm | 6am |
| 8pm | 7am |
| 9pm | 8am |
| 10pm | 9am |
| 11pm | 10am |