Time in BST and IDLW
The time difference between Bougainville Standard Time (BST) and International Date Line West Time (IDLW) is 23 hours. International Date Line West Time is 23 hours behind Bougainville Standard Time.
This means 9am BST is 10am IDLW (previous day) and 5pm BST is 6pm IDLW (previous day).
Bougainville Standard Time
- The current local time in BST is 7:34 pm (September 2, 2026)
- BST time zone offset is UTC+11:00
International Date Line West Time
- The current local time in IDLW is 8:34 pm (September 2, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Bougainville Standard Time to International Date Line West Time?
Subtract 23 hours from Bougainville Standard Time to get International Date Line West Time.
Time in BST
00:00
Time in IDLW
00:00
Use the slider above to convert Bougainville 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
| BST | IDLW |
|---|---|
| 12am | 1am |
| 1am | 2am |
| 2am | 3am |
| 3am | 4am |
| 4am | 5am |
| 5am | 6am |
| 6am | 7am |
| 7am | 8am |
| 8am | 9am |
| 9am | 10am |
| 10am | 11am |
| 11am | 12pm |
| 12pm | 1pm |
| 1pm | 2pm |
| 2pm | 3pm |
| 3pm | 4pm |
| 4pm | 5pm |
| 5pm | 6pm |
| 6pm | 7pm |
| 7pm | 8pm |
| 8pm | 9pm |
| 9pm | 10pm |
| 10pm | 11pm |
| 11pm | 12am |