Time in HST and ULAST
The time difference between Hawaii–Aleutian Standard Time (HST) and Ulaanbaatar Summer Time (ULAST) is 19 hours. Ulaanbaatar Summer Time is 19 hours ahead of Hawaii–Aleutian Standard Time.
This means 9am HST is 4am ULAST (next day) and 5pm HST is 12pm ULAST (next day).
Hawaii–Aleutian Standard Time
- The current local time in HST is 7:11 am (July 11, 2026)
- HST time zone offset is UTC-10:00
Ulaanbaatar Summer Time
- The current local time in ULAST is 6:11 am (July 11, 2026)
- ULAST time zone offset is UTC+09:00
How to convert Hawaii–Aleutian Standard Time to Ulaanbaatar Summer Time?
Add 19 hours to Hawaii–Aleutian Standard Time to get Ulaanbaatar Summer Time.
Time in HST
00:00
Time in ULAST
00:00
Use the slider above to convert Hawaii–Aleutian Standard 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
| HST | ULAST |
|---|---|
| 12am | 7pm |
| 1am | 8pm |
| 2am | 9pm |
| 3am | 10pm |
| 4am | 11pm |
| 5am | 12am |
| 6am | 1am |
| 7am | 2am |
| 8am | 3am |
| 9am | 4am |
| 10am | 5am |
| 11am | 6am |
| 12pm | 7am |
| 1pm | 8am |
| 2pm | 9am |
| 3pm | 10am |
| 4pm | 11am |
| 5pm | 12pm |
| 6pm | 1pm |
| 7pm | 2pm |
| 8pm | 3pm |
| 9pm | 4pm |
| 10pm | 5pm |
| 11pm | 6pm |