Updating current time…
BST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Sao Tome and PrincipeGMT
UTC+0
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

1:00 pm13:00 BST (UTC+1), Oct 22, 2026 = 12:00 pm12:00 GMT (UTC+0), Oct 22, 2026

BST is 1 hour ahead of São Tomé.

How the time difference changes

For most of the year, BST is 1 hour ahead of Sao Tome. From Oct 25, 2026 to Mar 28, 2027, GMT and Sao Tome have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in BST correspond to 8:00 am to 5:00 pm in Sao Tome. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 9:00 am to 6:00 pm in Sao Tome.For most of the year, working hours of 09:00 to 18:00 in BST correspond to 08:00 to 17:00 in Sao Tome. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 09:00 to 18:00 in Sao Tome.

Compare BST time with Sao Tome time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

British Summer Time is 1 hour ahead of GMT (Greenwich Mean Time).
1:00 pm13:00 in BST is 12:00 pm12:00 in Sao Tome, Sao Tome and Principe

BST to São Tomé call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in BST which corresponds to 9am-5pm09:00-17:00 in São Tomé

1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
12:00 pm12:00 GMT (Greenwich Mean Time) (Sao Tome, Sao Tome and Principe). Offset UTC 0:00 hours

1:00 pm13:00 BST / 12:00 pm12:00 Sao Tome, Sao Tome and Principe

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
BSTSao Tome, Sao Tome and Principe
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British Summer Time

Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Guernsey, Isle of Man, Jersey, United Kingdom

Principal Cities: The largest city in the BST time zone is London in the United Kingdom, with about 8.962 million people. Other major cities in this time zone include Birmingham, Glasgow, Manchester, Sheffield.

Current time in the United Kingdom: UK time now

Map of the areas on British Summer Time (BST)
BST part of the year

Today all shaded areas are on BST.

Daylight Saving: British Summer Time (BST) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Greenwich Mean Time (GMT).

123456789101112Start: British Summer Time (BST) started on Sunday, March 29, 2026 at 1:00 am01:00 local time and clocks were set one hour forward to Sunday, March 29, 2026, 2:00 am02:00. Daylight saving starts annually on the last Sunday of March.

123456789101112End: British Summer Time (BST) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.

See United Kingdom daylight saving time and upcoming clock changes worldwide.

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates an offset of one hour to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Alpha - Military abbreviation for BST
  • A - short form of 'Alpha'
IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
Time zones with the GMT +1 offset:
  • BST - British Summer Time
  • CET - Central European Time
  • IST - Irish Standard Time
  • WEST - Western European Summer Time
  • A - Alpha Time Zone
  • CET - Central European Time
  • MEZ - Mitteleuropäische Zeit
  • WAT - West Africa Time
  • WST - Western Sahara Summer Time
  • BMT - Biel Mean Time

São Tomé Time Zone and Facts

Time Zone

Abbreviation / Offset
GMT – Greenwich Mean Time, UTC+0 (no daylight saving time)

São Tomé Facts

Country
Sao Tome and Principe
Alternative Names
Salazar, San Tomas, San Tome, San Tomé, San Tomė, San-Tameh, San-Tome, Santo Tome, Santo Tomé, Santome, Sao Thome, Sao Tome, Sao Tomee, Sao Tomé, Sao-Tomeo, Soeo Tome, Svaety Tomas, Svätý Tomáš, Sào Thomé, São Tomé, Söo Tomé, TMS, Urbs Sancti Thomae, cavo tome, sa'o tome, sangtume, santome, savea team, saw twmy, saywtwmh, sea tu me, sheng duo mei, Σάο Τομέ, Сан-Тамэ, Сан-Томе, Сао Томе, Սան Տոմե, סאו טומה, ساؤ ٹومے, سائوتومه, ساو تومي, ساو تۆمێ, ساو ٹومے, साओ टोमे, সাও টোমে, ਸਾਓ ਤੋਮੇ, சாவோ தொமே, സാവോ ടോം, เซาตูเม, སའོ་ཊོ་མེ།, სან-ტომე, ሳን ቶሜ, サントメ, 圣多美, 聖多美, 상투메
Population
53,300
Currency
Dobra (STN)
Geographic Coordinates
0° 20' N Latitude / 6° 43' E Longitude
International Dialing Code
+239