Time in SLST and BIOT
The time difference between Sri Lanka Standard Time (SLST) and British Indian Ocean Time (BIOT) is 30 minutes. British Indian Ocean Time is 30 minutes ahead of Sri Lanka Standard Time.
This means 9am SLST is 9:30am BIOT and 5pm SLST is 5:30pm BIOT.
Sri Lanka Standard Time
- The current local time in SLST is 2:35 pm (September 2, 2026)
- SLST time zone offset is UTC+05:30
British Indian Ocean Time
- The current local time in BIOT is 3:05 pm (September 2, 2026)
- BIOT time zone offset is UTC+06:00
How to convert Sri Lanka Standard Time to British Indian Ocean Time?
Add 30 minutes to Sri Lanka Standard Time to get British Indian Ocean Time.
Time in SLST
00:00
Time in BIOT
00:00
Use the slider above to convert Sri Lanka Standard Time to British Indian Ocean 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
| SLST | BIOT |
|---|---|
| 12am | 0:30am |
| 1am | 1:30am |
| 2am | 2:30am |
| 3am | 3:30am |
| 4am | 4:30am |
| 5am | 5:30am |
| 6am | 6:30am |
| 7am | 7:30am |
| 8am | 8:30am |
| 9am | 9:30am |
| 10am | 10:30am |
| 11am | 11:30am |
| 12pm | 12:30pm |
| 1pm | 1:30pm |
| 2pm | 2:30pm |
| 3pm | 3:30pm |
| 4pm | 4:30pm |
| 5pm | 5:30pm |
| 6pm | 6:30pm |
| 7pm | 7:30pm |
| 8pm | 8:30pm |
| 9pm | 9:30pm |
| 10pm | 10:30pm |
| 11pm | 11:30pm |