Time in AST and BST
The time difference between Atlantic Standard Time (AST) and Bougainville Standard Time (BST) is 15 hours. Bougainville Standard Time is 15 hours ahead of Atlantic Standard Time.
This means 9am AST is 12am BST (next day) and 5pm AST is 8am BST (next day).
Atlantic Standard Time
- The current local time in AST is 12:34 pm (September 2, 2026)
- AST time zone offset is UTC-04:00
Bougainville Standard Time
- The current local time in BST is 7:34 pm (September 2, 2026)
- BST time zone offset is UTC+11:00
How to convert Atlantic Standard Time to Bougainville Standard Time?
Add 15 hours to Atlantic Standard Time to get Bougainville Standard Time.
Time in AST
00:00
Time in BST
00:00
Use the slider above to convert Atlantic Standard 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
| AST | BST |
|---|---|
| 12am | 3pm |
| 1am | 4pm |
| 2am | 5pm |
| 3am | 6pm |
| 4am | 7pm |
| 5am | 8pm |
| 6am | 9pm |
| 7am | 10pm |
| 8am | 11pm |
| 9am | 12am |
| 10am | 1am |
| 11am | 2am |
| 12pm | 3am |
| 1pm | 4am |
| 2pm | 5am |
| 3pm | 6am |
| 4pm | 7am |
| 5pm | 8am |
| 6pm | 9am |
| 7pm | 10am |
| 8pm | 11am |
| 9pm | 12pm |
| 10pm | 1pm |
| 11pm | 2pm |