Time in BST and AST
The time difference between Bougainville Standard Time (BST) and Atlantic Standard Time (AST) is 15 hours. Atlantic Standard Time is 15 hours behind Bougainville Standard Time.
This means 9am BST is 6pm AST (previous day) and 5pm BST is 2am AST.
Bougainville Standard Time
- The current local time in BST is 12:38 am (July 19, 2026)
- BST time zone offset is UTC+11:00
Atlantic Standard Time
- The current local time in AST is 5:38 pm (July 18, 2026)
- AST time zone offset is UTC-04:00
How to convert Bougainville Standard Time to Atlantic Standard Time?
Subtract 15 hours from Bougainville Standard Time to get Atlantic Standard Time.
Time in BST
00:00
Time in AST
00:00
Use the slider above to convert Bougainville Standard Time to Atlantic 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
| BST | AST |
|---|---|
| 12am | 9am |
| 1am | 10am |
| 2am | 11am |
| 3am | 12pm |
| 4am | 1pm |
| 5am | 2pm |
| 6am | 3pm |
| 7am | 4pm |
| 8am | 5pm |
| 9am | 6pm |
| 10am | 7pm |
| 11am | 8pm |
| 12pm | 9pm |
| 1pm | 10pm |
| 2pm | 11pm |
| 3pm | 12am |
| 4pm | 1am |
| 5pm | 2am |
| 6pm | 3am |
| 7pm | 4am |
| 8pm | 5am |
| 9pm | 6am |
| 10pm | 7am |
| 11pm | 8am |