Time in BST and IST
The time difference between Bougainville Standard Time (BST) and Irish Standard Time (IST) is 10 hours. Irish Standard Time is 10 hours behind Bougainville Standard Time.
This means 9am BST is 11pm IST (previous day) and 5pm BST is 7am IST.
Bougainville Standard Time
- The current local time in BST is 12:40 am (July 19, 2026)
- BST time zone offset is UTC+11:00
Irish Standard Time
- The current local time in IST is 2:40 pm (July 18, 2026)
- IST time zone offset is UTC+01:00
How to convert Bougainville Standard Time to Irish Standard Time?
Subtract 10 hours from Bougainville Standard Time to get Irish Standard Time.
Time in BST
00:00
Time in IST
00:00
Use the slider above to convert Bougainville Standard Time to Irish 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 | IST |
|---|---|
| 12am | 2pm |
| 1am | 3pm |
| 2am | 4pm |
| 3am | 5pm |
| 4am | 6pm |
| 5am | 7pm |
| 6am | 8pm |
| 7am | 9pm |
| 8am | 10pm |
| 9am | 11pm |
| 10am | 12am |
| 11am | 1am |
| 12pm | 2am |
| 1pm | 3am |
| 2pm | 4am |
| 3pm | 5am |
| 4pm | 6am |
| 5pm | 7am |
| 6pm | 8am |
| 7pm | 9am |
| 8pm | 10am |
| 9pm | 11am |
| 10pm | 12pm |
| 11pm | 1pm |