Time in IDLW and BST
The time difference between International Date Line West Time (IDLW) and Bougainville Standard Time (BST) is 23 hours. Bougainville Standard Time is 23 hours ahead of International Date Line West Time.
This means 9am IDLW is 8am BST (next day) and 5pm IDLW is 4pm BST (next day).
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
Bougainville Standard Time
- The current local time in BST is 11:38 pm (July 18, 2026)
- BST time zone offset is UTC+11:00
How to convert International Date Line West Time to Bougainville Standard Time?
Add 23 hours to International Date Line West Time to get Bougainville Standard Time.
Time in IDLW
00:00
Time in BST
00:00
Use the slider above to convert International Date Line West Time to Bougainville Standard 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 | BST |
|---|---|
| 12am | 11pm |
| 1am | 12am |
| 2am | 1am |
| 3am | 2am |
| 4am | 3am |
| 5am | 4am |
| 6am | 5am |
| 7am | 6am |
| 8am | 7am |
| 9am | 8am |
| 10am | 9am |
| 11am | 10am |
| 12pm | 11am |
| 1pm | 12pm |
| 2pm | 1pm |
| 3pm | 2pm |
| 4pm | 3pm |
| 5pm | 4pm |
| 6pm | 5pm |
| 7pm | 6pm |
| 8pm | 7pm |
| 9pm | 8pm |
| 10pm | 9pm |
| 11pm | 10pm |