IANA time zone · Tonga Standard Time
Pacific/Tongatapu
Clock changes in 2026 and 2027
Clocks in this zone don’t change – it stays on UTC+13 all year.
Cities in the Pacific/Tongatapu zone
- Nuku‘alofa Tonga
The identifier Pacific/Tongatapu comes from the IANA time zone database (tz database) used by operating systems, browsers and programming languages. A zone in this database is an area where clocks have agreed since 1970 – which is why one country can have several zones with the same offset.