Technical Specifications & Standards
Official chronometric properties, ISO standards, and international database registry identifiers for West Samoa Standard Time:
Daylight Saving Time (DST) Transitions
⬆️ Spring Forward (Clocks Advance)
None (Samoa discontinued daylight saving time in 2021)
⬇️ Fall Back (Clocks Return)
None
Observing Jurisdictions & Subdivisions
1 Sovereign NationsSovereign nations, administrative subdivisions, and regional territories officially operating under WSST:
Regional Subdivisions & Territory Details
Financial Markets & Trading Hours
Oversees commercial trade and banking with Australia, New Zealand, and East Asia.
Local Hours: 09:00 - 16:00 WSST
UTC Window: 20:00 - 03:00 UTC
Major Cities in WSST
Primary metropolitan centers and financial hubs observing this time zone:
Adoption History & Astronomical Facts
Year Established: 2011
On December 29, 2011, independent Samoa skipped Friday, December 30, jumping straight to Saturday, December 31, moving from UTC-11 to UTC+13 to synchronize business days with primary trading partners Australia and New Zealand.
When Samoa crossed the International Date Line in 2011, December 30, 2011, never occurred in Samoa, as the nation jumped directly into Saturday.
Frequently Asked Questions about WSST
What is West Samoa Standard Time?
West Samoa Standard Time (WSST) is UTC+13, observed in the independent nation of Samoa.
Why did Samoa change its time zone in 2011?
Samoa crossed the Date Line to match the business week with Australia and New Zealand, eliminating a two-day weekend coordination lag.
Does Samoa observe daylight saving?
No. Samoa abolished daylight saving time in September 2021.