Time in TOT and BIOT
The time difference between Tonga Time (TOT) and British Indian Ocean Time (BIOT) is 7 hours. British Indian Ocean Time is 7 hours behind Tonga Time.
This means 9am TOT is 2am BIOT and 5pm TOT is 10am BIOT.
Tonga Time
- The current local time in TOT is 1:40 am (July 19, 2026)
- TOT time zone offset is UTC+13:00
British Indian Ocean Time
- The current local time in BIOT is 6:40 pm (July 18, 2026)
- BIOT time zone offset is UTC+06:00
How to convert Tonga Time to British Indian Ocean Time?
Subtract 7 hours from Tonga Time to get British Indian Ocean Time.
Time in TOT
00:00
Time in BIOT
00:00
Use the slider above to convert Tonga 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
| TOT | BIOT |
|---|---|
| 12am | 5pm |
| 1am | 6pm |
| 2am | 7pm |
| 3am | 8pm |
| 4am | 9pm |
| 5am | 10pm |
| 6am | 11pm |
| 7am | 12am |
| 8am | 1am |
| 9am | 2am |
| 10am | 3am |
| 11am | 4am |
| 12pm | 5am |
| 1pm | 6am |
| 2pm | 7am |
| 3pm | 8am |
| 4pm | 9am |
| 5pm | 10am |
| 6pm | 11am |
| 7pm | 12pm |
| 8pm | 1pm |
| 9pm | 2pm |
| 10pm | 3pm |
| 11pm | 4pm |