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