Time in ULAT and IDLW
The time difference between Ulaanbaatar Standard Time (ULAT) and International Date Line West Time (IDLW) is 20 hours. International Date Line West Time is 20 hours behind Ulaanbaatar Standard Time.
This means 9am ULAT is 1pm IDLW (previous day) and 5pm ULAT is 9pm IDLW (previous day).
Ulaanbaatar Standard Time
- The current local time in ULAT is 2:50 pm (September 2, 2026)
- ULAT time zone offset is UTC+08:00
International Date Line West Time
- The current local time in IDLW is 6:50 pm (September 2, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Ulaanbaatar Standard Time to International Date Line West Time?
Subtract 20 hours from Ulaanbaatar Standard Time to get International Date Line West Time.
Time in ULAT
00:00
Time in IDLW
00:00
Use the slider above to convert Ulaanbaatar Standard Time to International Date Line West 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
| ULAT | IDLW |
|---|---|
| 12am | 4am |
| 1am | 5am |
| 2am | 6am |
| 3am | 7am |
| 4am | 8am |
| 5am | 9am |
| 6am | 10am |
| 7am | 11am |
| 8am | 12pm |
| 9am | 1pm |
| 10am | 2pm |
| 11am | 3pm |
| 12pm | 4pm |
| 1pm | 5pm |
| 2pm | 6pm |
| 3pm | 7pm |
| 4pm | 8pm |
| 5pm | 9pm |
| 6pm | 10pm |
| 7pm | 11pm |
| 8pm | 12am |
| 9pm | 1am |
| 10pm | 2am |
| 11pm | 3am |