Time in BIOT and SLST
The time difference between British Indian Ocean Time (BIOT) and Sri Lanka Standard Time (SLST) is 30 minutes. Sri Lanka Standard Time is 30 minutes behind British Indian Ocean Time.
This means 9am BIOT is 8:30am SLST and 5pm BIOT is 4:30pm SLST.
British Indian Ocean Time
- The current local time in BIOT is 4:32 am (July 19, 2026)
- BIOT time zone offset is UTC+06:00
Sri Lanka Standard Time
- The current local time in SLST is 4:02 am (July 19, 2026)
- SLST time zone offset is UTC+05:30
How to convert British Indian Ocean Time to Sri Lanka Standard Time?
Subtract 30 minutes from British Indian Ocean Time to get Sri Lanka Standard Time.
Time in BIOT
00:00
Time in SLST
00:00
Use the slider above to convert British Indian Ocean Time to Sri Lanka 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
| BIOT | SLST |
|---|---|
| 12am | 11:30pm |
| 1am | 0:30am |
| 2am | 1:30am |
| 3am | 2:30am |
| 4am | 3:30am |
| 5am | 4:30am |
| 6am | 5:30am |
| 7am | 6:30am |
| 8am | 7:30am |
| 9am | 8:30am |
| 10am | 9:30am |
| 11am | 10:30am |
| 12pm | 11:30am |
| 1pm | 12:30pm |
| 2pm | 1:30pm |
| 3pm | 2:30pm |
| 4pm | 3:30pm |
| 5pm | 4:30pm |
| 6pm | 5:30pm |
| 7pm | 6:30pm |
| 8pm | 7:30pm |
| 9pm | 8:30pm |
| 10pm | 9:30pm |
| 11pm | 10:30pm |