Time in WST and IDLW
The time difference between Western Standard Time (WST) and International Date Line West Time (IDLW) is 20 hours. International Date Line West Time is 20 hours behind Western Standard Time.
This means 9am WST is 1pm IDLW (previous day) and 5pm WST is 9pm IDLW (previous day).
Western Standard Time
- The current local time in WST is 11:47 am (July 1, 2026)
- WST time zone offset is UTC+08:00
International Date Line West Time
- The current local time in IDLW is 3:47 pm (July 1, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Western Standard Time to International Date Line West Time?
Subtract 20 hours from Western Standard Time to get International Date Line West Time.
Time in WST
00:00
Time in IDLW
00:00
Use the slider above to convert Western 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
| WST | 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 |