Time in São Tomé and Príncipe

Time in São Tomé and Príncipe
Time zoneGreenwich Mean Time
InitialsGMT
UTC offsetUTC+00:00
Adopted1 January 1912–1 January 2018
1 January 2019 (readopted)
Daylight saving time
DST not observed
tz database
Africa/Sao Tome

Time in the island country of São Tomé and Príncipe is given by Greenwich Mean Time (GMT; UTC+00:00).[1] São Tomé and Príncipe has never observed daylight saving time.[2]

History

Under Portuguese rule, São Tomé and Príncipe first observed the local mean time UTC+0:26:56 until 1884, when it adopted UTC-0:36:45. GMT (UTC+00:00) was adopted on 1 January 1912.[3] The country briefly adopted West Africa Time (WAT; UTC+01:00) on 1 January 2018,[4] but reverted back on 1 January the following year.[5]

IANA time zone database

In the IANA time zone database, São Tomé and Príncipe is given one zone in the file zone.tab – Africa/Sao Tome. "ST" refers to the country's ISO 3166-1 alpha-2 country code. Data for São Tomé and Príncipe directly from zone.tab of the IANA time zone database; columns marked with * are the columns from zone.tab itself:[3]

c.c.* coordinates* TZ* Comments UTC offset DST
ST +0020+00644 Africa/Sao_Tome +00:00 +00:00

References

  1. ^ Sao Tome and Principe. "time difference: UTC 0". The World Factbook. Central Intelligence Agency (CIA). Retrieved 29 July 2021.
  2. ^ São Tomé and Príncipe Time Zone. TimeTemperature.com. Retrieved 29 July 2021.
  3. ^ a b Africa at the tz database. Internet Assigned Numbers Authority (IANA). Retrieved 29 July 2021.
  4. ^ Decree No. 25/2017. mnec.gov.st. Archived from the original on 26 December 2018. Retrieved 29 July 2021.
  5. ^ Governo de Jorge B. Jesus já decidiu repor a hora legal são-tomense, 5 December 2018. (in Portuguese). STP-Press. Retrieved 29 July 2021.