Time in IST and HDT
The time difference between Irish Standard Time (IST) and Hawaii–Aleutian Daylight Time (HDT) is 10 hours. Hawaii–Aleutian Daylight Time is 10 hours behind Irish Standard Time.
This means 9am IST is 11pm HDT (previous day) and 5pm IST is 7am HDT.
Irish Standard Time
- The current local time in IST is 2:40 pm (July 18, 2026)
- IST time zone offset is UTC+01:00
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 10:40 pm (July 18, 2026)
- HDT time zone offset is UTC-09:00
How to convert Irish Standard Time to Hawaii–Aleutian Daylight Time?
Subtract 10 hours from Irish Standard Time to get Hawaii–Aleutian Daylight Time.
Time in IST
00:00
Time in HDT
00:00
Use the slider above to convert Irish 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
| IST | HDT |
|---|---|
| 12am | 2pm |
| 1am | 3pm |
| 2am | 4pm |
| 3am | 5pm |
| 4am | 6pm |
| 5am | 7pm |
| 6am | 8pm |
| 7am | 9pm |
| 8am | 10pm |
| 9am | 11pm |
| 10am | 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 |