DST periods of Tonga (2019 ~ 2020)
| Year | Date | Type |
| 2019 | 2019-1-20 | End of DST |
| 2019-11-3 | Start of DST | |
| 2020 | 2020-1-19 | End of DST |
| 2020-11-1 | Start of DST |
Time zones currently being used in Tonga
Tonga is currently using 1 time zone , +13
| Offset | Time Zone | Example City | Current Time |
| UTC +13:00 | +13 | Tongatapu | 20:14 Sat, 2019-10-19 |
Time zones to be used in Tonga
| Offset | Time Zone | Commences |
| UTC +14:00 | +14 | 2019-11-03 |
Time of Cities in Tonga
+13 (UTC +13:00)
| City | Time |
|---|---|
| Tongatapu | 20:14 Sat, 2019-10-19 |
| City | Time |
|---|---|
| Nukuʻalofa | 20:14 Sat, 2019-10-19 |