Time in IDLW and CHOST
The time difference between International Date Line West Time (IDLW) and Choibalsan Summer Time (CHOST) is 21 hours. Choibalsan Summer Time is 21 hours ahead of International Date Line West Time.
This means 9am IDLW is 6am CHOST (next day) and 5pm IDLW is 2pm CHOST (next day).
International Date Line West Time
- The current local time in IDLW is 12:36 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
Choibalsan Summer Time
- The current local time in CHOST is 9:36 pm (July 18, 2026)
- CHOST time zone offset is UTC+09:00
How to convert International Date Line West Time to Choibalsan Summer Time?
Add 21 hours to International Date Line West Time to get Choibalsan Summer Time.
Time in IDLW
00:00
Time in CHOST
00:00
Use the slider above to convert International Date Line West Time to Choibalsan 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
| IDLW | CHOST |
|---|---|
| 12am | 9pm |
| 1am | 10pm |
| 2am | 11pm |
| 3am | 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 |