Africa · Middle Africa · Sovereign state
Current time in São Tomé and Príncipe
A single time zone at null.
Wednesday, October 14, 2026
About São Tomé and Príncipe's time
A single time zone.
São Tomé and Príncipe sits neatly in Greenwich Mean Time year-round and has a single time zone with no daylight saving time.
Major cities
Cities of São Tomé and Príncipe.
History
How São Tomé and Príncipe keeps time.
São Tomé and Príncipe adopted Greenwich Mean Time (UTC+0) on 1 January 1912, under Portuguese rule, and kept it through independence in 1975. On 1 January 2018 the country moved its clocks forward to West Africa Time (UTC+1), matching neighbors such as Gabon and Cameroon, but it returned to GMT on 1 January 2019. It has never observed daylight saving time.
Did you know?
Things about São Tomé and Príncipe's time.
What's notable about São Tomé and Príncipe's timezone is its brief 2018 switch to UTC+1, reversed after a year. At about 6.7°E, the islands sit east of Greenwich, so UTC+0 runs slightly behind local solar time. The country skipped daylight saving altogether, making its time easy to track. There are no regional exceptions or dependent territories with alternate offsets; the two main islands, São Tomé and Príncipe, share the same timezone.
Convert
São Tomé and Príncipe to the world's clocks.
Frequently asked questions
Common questions about São Tomé and Príncipe's time zone, daylight saving rules, and how to handle it in software. Can't find what you need? Email [email protected].
- How many time zones does São Tomé and Príncipe have?
- São Tomé and Príncipe has just one time zone: Greenwich Mean Time (UTC+0). The entire country, including both main islands, uses this single time zone.
- What time zone is São Tomé and Príncipe in?
- São Tomé and Príncipe uses Greenwich Mean Time (GMT), equivalent to UTC+0, and does not observe daylight saving time.
- Does São Tomé and Príncipe observe daylight saving time?
- No, São Tomé and Príncipe does not observe daylight saving time and stays on GMT (UTC+0) year-round.
- Why is São Tomé and Príncipe in UTC+0 when most nearby countries use UTC+1?
- São Tomé and Príncipe has used GMT (UTC+0) since 1912. It switched to UTC+1 on 1 January 2018 to match its mainland neighbors but returned to GMT on 1 January 2019.
- Is the time the same across all of São Tomé and Príncipe, including both islands?
- Yes, both São Tomé and the smaller Príncipe island use the same time zone (UTC+0/GMT). There are no internal time differences within the country.
- How does São Tomé and Príncipe's time compare to neighboring countries?
- São Tomé and Príncipe is one hour behind its nearest mainland neighbors, such as Gabon, Equatorial Guinea, and Cameroon, which operate on UTC+1 (WAT). Its time matches that of Ghana, Senegal, and other GMT-zone countries further west.
Source: IANA tzdb2026d · Reviewed
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