Samoa Standard Time (SST)
UTC offset: +13:00
IANA identifier: Pacific/Apia
Abbreviation: SST (note: this abbreviation conflicts with Samoa Standard Time historically being UTC-11:00)
Population: approximately 220,000
DST observed: No (discontinued in 2021)
Samoa sits at UTC+13:00, which makes it one of the first nations in the world to greet each new day. At midnight in Samoa, it's still 11:00 a.m. the previous day in London. The country reached this position through one of the most dramatic time zone changes in modern history: on December 29, 2011, Samoa skipped an entire day, jumping from the east side of the International Date Line to the west side.
That means December 30, 2011 never happened in Samoa. The country went directly from Thursday the 29th to Saturday the 31st. People lost a day on the calendar (though not in actual lived time) so that Samoa could align its business week with Australia and New Zealand rather than the United States.
The 2011 Date Line Jump
Before 2011, Samoa was at UTC-11:00, among the last places on Earth to see each day end. American Samoa (a separate US territory, 100 km to the east) was on the same offset. The two Samoas shared not just a time zone but a calendar day.
The problem was trade. New Zealand and Australia had become Samoa's dominant economic partners, replacing the United States. But being on the opposite side of the date line meant that when it was Monday in Auckland, it was still Sunday in Apia. Samoa lost two working days per week to misalignment. By the time Samoan businesses opened on their Monday, it was already Tuesday in Sydney and Wellington.
The government announced the switch in May 2011. On December 29, clocks moved forward by 24 hours (effectively). The country went from UTC-11:00 to UTC+13:00. The time of day didn't change. Sunrise and sunset stayed the same. But the calendar date advanced by one, and Samoa found itself on the same day as New Zealand and Australia.
American Samoa did not follow. It stayed at UTC-11:00 (now using the Samoa Standard Time abbreviation "SST" in its original sense). This means the two Samoas, separated by about 100 km of ocean, are now 24 hours apart on the calendar (but functionally at the same time of day minus one day).
DST History
Samoa observed DST from 2012 to 2021, advancing clocks to UTC+14:00 during the southern hemisphere summer (roughly late September to early April). At UTC+14:00, Samoa held the distinction of having the world's largest UTC offset and being the very first place to enter each new day.
DST was discontinued after the 2020-2021 season. The energy savings were minimal (equatorial location, short day length variation), and the scheduling complexity with trading partners wasn't worth the marginal benefit.
Geography
Samoa consists of two main islands (Upolu and Savai'i) and several smaller ones. The total land area is about 2,842 square kilometers (slightly larger than Luxembourg but much less populous). The islands are volcanic in origin, with Savai'i containing some of the most recent lava flows in the Pacific (the 1905-1911 eruptions buried villages).
Upolu is the more populated island, home to the capital Apia and about 75% of the population. Savai'i is larger in area but less developed, with traditional village life predominating.
The latitude (about 13.5°S to 14.5°S) means tropical climate with modest day length variation. December days are about 12 hours 50 minutes; June days about 11 hours 30 minutes. Not enough to make DST worthwhile, as the 2021 discontinuation confirmed.
Apia
Apia (~40,000 city, ~60,000 urban area) is the capital and only significant town. It's where the port, airport (Faleolo International, about 35 km west), government, and commercial activity concentrate. The waterfront area features markets, churches, and the SPREP (Secretariat of the Pacific Regional Environment Programme) headquarters.
Robert Louis Stevenson spent his final years in Samoa and is buried on Mount Vaea above Apia. His estate (Vailima) is now a museum.
Salelologa on Savai'i is the ferry terminal town connecting the two main islands. The ferry crossing takes about an hour.
Economy
Samoa's economy depends on remittances (primarily from New Zealand, Australia, and American Samoa), agriculture (coconut products, taro, fish), tourism, and foreign aid. The country has a small manufacturing sector (automotive wire harnesses for the Australian market, operated by Yazaki).
The 2011 time zone switch was explicitly motivated by trade. New Zealand and Australia together account for the majority of Samoa's exports, imports, tourist arrivals, and remittance sources. Being on the same calendar day eliminated a recurring friction point.
Business hours: 8:00 a.m. to 4:30 p.m. Monday through Friday. Banks: 9:00 a.m. to 3:00 p.m.
Key time relationships (post-2011):
- New Zealand (NZST, winter): Same day, NZ is 1 hour behind (UTC+12:00)
- New Zealand (NZDT, summer): Same day and same time (UTC+13:00) when Samoa observed DST, now 1 hour ahead of Samoa
- Australia Eastern (AEST): Same day, 3 hours behind
- American Samoa: Same time of day, but previous calendar day (24 hours behind on the calendar)
- Hawaii: Same time of day, 24 hours (1 calendar day) behind
- London: 13 hours behind
Fa'a Samoa
Samoan culture (fa'a Samoa, "the Samoan way") centers on the extended family (aiga) and the village chief system (matai). Community obligations, church, and traditional protocols structure daily life more than clock time. Sunday is strictly observed as a day of rest (by law in many villages, swimming and noisy activities are prohibited). Church services (predominantly Christian: Methodist, Catholic, Congregational) are central social events.
The traditional fale (open-sided house with thatched roof) is still common in villages. Time in village life follows communal rhythms rather than fixed schedules.
American Samoa: The Other Side
American Samoa (unincorporated US territory, ~55,000 people, capital Pago Pago) remains at UTC-11:00. The date line now runs between the two Samoas. A boat crossing from Apia (Saturday) to Pago Pago arrives on Friday. Same stretch of ocean, same time of day, but the calendar jumps backward by a day. This creates one of the world's strangest border situations for families and businesses that operate across both Samoas.
Neighboring Zones
| Zone | Offset | Difference from Samoa |
|---|---|---|
| New Zealand (NZST) | UTC+12:00 | 1 hour behind |
| Tonga | UTC+13:00 | Same |
| Fiji | UTC+12:00 | 1 hour behind |
| Tokelau | UTC+13:00 | Same |
| American Samoa | UTC-11:00 | Same time, previous day |
| Kiribati (Line Islands) | UTC+14:00 | 1 hour ahead |
| Hawaii | UTC-10:00 | Same time, previous day |
Technical Identifiers
- Pacific/Apia (IANA canonical)
- WST (West Samoa Time, sometimes used)
- Windows: "Samoa Standard Time"
- Military/aviation: M+1 (no standard letter for +13:00)
- Pre-2011 offset: UTC-11:00
Quick Reference
| Attribute | Value |
|---|---|
| UTC offset | +13:00 |
| DST observed | No (discontinued 2021) |
| IANA zone | Pacific/Apia |
| Population | ~220,000 |
| Capital | Apia (~40K) |
| Date line switch | December 29, 2011 (skipped Dec 30) |
| Previous offset | UTC-11:00 (before 2011) |
| Same offset as | Tonga, Tokelau |
| Key partners | New Zealand, Australia |
| American Samoa | Still UTC-11:00 (24-hour calendar gap) |