Time in HDT and ULAST
The time difference between Hawaii–Aleutian Daylight Time (HDT) and Ulaanbaatar Summer Time (ULAST) is 18 hours. Ulaanbaatar Summer Time is 18 hours ahead of Hawaii–Aleutian Daylight Time.
This means 9am HDT is 3am ULAST (next day) and 5pm HDT is 11am ULAST (next day).
Hawaii–Aleutian Daylight Time
- The current local time in HDT is 5:28 pm (September 2, 2026)
- HDT time zone offset is UTC-09:00
Ulaanbaatar Summer Time
- The current local time in ULAST is 5:28 pm (September 2, 2026)
- ULAST time zone offset is UTC+09:00
How to convert Hawaii–Aleutian Daylight Time to Ulaanbaatar Summer Time?
Add 18 hours to Hawaii–Aleutian Daylight Time to get Ulaanbaatar Summer Time.
Time in HDT
00:00
Time in ULAST
00:00
Use the slider above to convert Hawaii–Aleutian Daylight Time to Ulaanbaatar Summer 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
| HDT | ULAST |
|---|---|
| 12am | 6pm |
| 1am | 7pm |
| 2am | 8pm |
| 3am | 9pm |
| 4am | 10pm |
| 5am | 11pm |
| 6am | 12am |
| 7am | 1am |
| 8am | 2am |
| 9am | 3am |
| 10am | 4am |
| 11am | 5am |
| 12pm | 6am |
| 1pm | 7am |
| 2pm | 8am |
| 3pm | 9am |
| 4pm | 10am |
| 5pm | 11am |
| 6pm | 12pm |
| 7pm | 1pm |
| 8pm | 2pm |
| 9pm | 3pm |
| 10pm | 4pm |
| 11pm | 5pm |