Time in COST and TOT
The time difference between Colombia Summer Time (COST) and Tonga Time (TOT) is 17 hours. Tonga Time is 17 hours ahead of Colombia Summer Time.
This means 9am COST is 2am TOT (next day) and 5pm COST is 10am TOT (next day).
Colombia Summer Time
- The current local time in COST is 6:24 pm (July 18, 2026)
- COST time zone offset is UTC-04:00
Tonga Time
- The current local time in TOT is 3:24 am (July 19, 2026)
- TOT time zone offset is UTC+13:00
How to convert Colombia Summer Time to Tonga Time?
Add 17 hours to Colombia Summer Time to get Tonga Time.
Time in COST
00:00
Time in TOT
00:00
Use the slider above to convert Colombia Summer 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
| COST | TOT |
|---|---|
| 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 |