Time in IST and TOT
The time difference between Irish Standard Time (IST) and Tonga Time (TOT) is 12 hours. Tonga Time is 12 hours ahead of Irish Standard Time.
This means 9am IST is 9pm TOT and 5pm IST is 5am TOT (next day).
Irish Standard Time
- The current local time in IST is 2:39 pm (July 18, 2026)
- IST time zone offset is UTC+01:00
Tonga Time
- The current local time in TOT is 2:39 am (July 19, 2026)
- TOT time zone offset is UTC+13:00
How to convert Irish Standard Time to Tonga Time?
Add 12 hours to Irish Standard Time to get Tonga Time.
Time in IST
00:00
Time in TOT
00:00
Use the slider above to convert Irish Standard Time to Tonga 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
| IST | TOT |
|---|---|
| 12am | 12pm |
| 1am | 1pm |
| 2am | 2pm |
| 3am | 3pm |
| 4am | 4pm |
| 5am | 5pm |
| 6am | 6pm |
| 7am | 7pm |
| 8am | 8pm |
| 9am | 9pm |
| 10am | 10pm |
| 11am | 11pm |
| 12pm | 12am |
| 1pm | 1am |
| 2pm | 2am |
| 3pm | 3am |
| 4pm | 4am |
| 5pm | 5am |
| 6pm | 6am |
| 7pm | 7am |
| 8pm | 8am |
| 9pm | 9am |
| 10pm | 10am |
| 11pm | 11am |