Time in CST and IDLW
The time difference between China Standard Time (CST) and International Date Line West Time (IDLW) is 20 hours. International Date Line West Time is 20 hours behind China Standard Time.
This means 9am CST is 1pm IDLW (previous day) and 5pm CST is 9pm IDLW (previous day).
China Standard Time
- The current local time in CST is 8:38 pm (July 18, 2026)
- CST time zone offset is UTC+08:00
International Date Line West Time
- The current local time in IDLW is 12:38 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
How to convert China Standard Time to International Date Line West Time?
Subtract 20 hours from China Standard Time to get International Date Line West Time.
Time in CST
00:00
Time in IDLW
00:00
Use the slider above to convert China 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
| CST | 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 |