WST to BST Converter
Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
12:00 pm12:00 WT (UTC+0), Oct 12, 2026 = 1:00 pm13:00 BST (UTC+1), Oct 12, 2026
WT is 1 hour behind BST.
WST and BST examples
These examples always use WST (UTC+1) and BST (UTC+1). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
WST and BST have the same local time.
How the time difference changes
During 2026, the difference changes: WST and BST have the same time, WT and GMT have the same time, WST is 1 hour ahead of GMT, and WT is 1 hour behind BST.
During 2026, working-hour overlap changes: working hours of 9:00 am to 5:00 pm in WST correspond to 9:00 am to 5:00 pm in BST, working hours of 9:00 am to 5:00 pm in WT correspond to 9:00 am to 5:00 pm in GMT, working hours of 9:00 am to 5:00 pm in WST correspond to 8:00 am to 4:00 pm in GMT, and working hours of 9:00 am to 5:00 pm in WT correspond to 10:00 am to 6:00 pm in BST.During 2026, working-hour overlap changes: working hours of 09:00 to 17:00 in WST correspond to 09:00 to 17:00 in BST, working hours of 09:00 to 17:00 in WT correspond to 09:00 to 17:00 in GMT, working hours of 09:00 to 17:00 in WST correspond to 08:00 to 16:00 in GMT, and working hours of 09:00 to 17:00 in WT correspond to 10:00 to 18:00 in BST.
Compare WST time with BST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Western Sahara Standard Time is 1 hour behind British Summer Time.
12:00 pm12:00 in WT is 1:00 pm13:00 in BST
WT to BST call time
Best time for a conference call or a meeting is between 9am-4pm09:00-16:00 in WT which corresponds to 10am-5pm10:00-17:00 in BST
12:00 pm12:00 Western Sahara Standard Time (WT). Offset UTC 0:00 hours
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
12:00 pm12:00 WT / 1:00 pm13:00 BST
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.
| WT | BST |
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| 00:00 next day |
Western Sahara Summer Time
Offset: WST is 1 hour ahead of Greenwich Mean Time (GMT).
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use the two are the same. In the military, GMT is known as Zulu time. Greenwich Mean Time was the same as Universal Time (UT), a standard astronomical concept used in many technical fields, until the introduction of UTC in 1972.
WST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +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.
- Alpha - Military abbreviation for WST
- A - short form of 'Alpha'
- Western Sahara Summer Time - UTC +1
- West Samoa Time - UTC +13
- 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
British Summer Time
Offset: BST is 1 hour ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Britain (UK), Guernsey, Isle of Man, Jersey
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.
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).
Start: 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.
End: 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.
BST representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +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.
- Alpha - Military abbreviation for BST
- A - short form of 'Alpha'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- 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