BST to WT Converter
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Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
1:00 pm13:00 BST (UTC+1), Oct 13, 2026 = 12:00 pm12:00 WT (UTC+0), Oct 13, 2026
BST is 1 hour ahead of WT.
BST and WT examples
These examples always use BST (UTC+1) and WT (UTC+0). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
BST is 1 hour ahead of WT.
How the time difference changes
During 2026, the difference changes: BST and WST have the same time, GMT and WT have the same time, GMT is 1 hour behind WST, and BST is 1 hour ahead of WT.
During 2026, working-hour overlap changes: working hours of 9:00 am to 5:00 pm in BST correspond to 9:00 am to 5:00 pm in WST, working hours of 9:00 am to 5:00 pm in GMT correspond to 9:00 am to 5:00 pm in WT, working hours of 9:00 am to 5:00 pm in GMT correspond to 10:00 am to 6:00 pm in WST, and working hours of 9:00 am to 5:00 pm in BST correspond to 8:00 am to 4:00 pm in WT.During 2026, working-hour overlap changes: working hours of 09:00 to 17:00 in BST correspond to 09:00 to 17:00 in WST, working hours of 09:00 to 17:00 in GMT correspond to 09:00 to 17:00 in WT, working hours of 09:00 to 17:00 in GMT correspond to 10:00 to 18:00 in WST, and working hours of 09:00 to 17:00 in BST correspond to 08:00 to 16:00 in WT.
Compare BST time with WT 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 Western Sahara Standard Time.
1:00 pm13:00 in BST is 12:00 pm12:00 in WT
BST to WT call time
Best time for a conference call or a meeting is between 10am-5pm10:00-17:00 in BST which corresponds to 9am-4pm09:00-16:00 in WT
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
12:00 pm12:00 Western Sahara Standard Time (WT). Offset UTC 0:00 hours
1:00 pm13:00 BST / 12:00 pm12:00 WT
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.
| BST | WT |
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| 11:00pm previous day | |
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| 23:00 previous day | |
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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
Western Sahara Standard Time
Offset: WT is the same as 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.
WT representations, usage and related time zones
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates the zero UTC/GMT offset.
- Zulu - Military abbreviation for WT
- Z - short form of 'Zulu'
- EGST - Eastern Greenland Summer Time
- GMT - Greenwich Mean Time
- WET - Western European Time
- AZOST - Azores Summer Time
- UTC - Coordinated Universal Time
- WT - Western Sahara Standard Time
- Z - Zulu Time Zone