BST to AFT Converter
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Quick answers
Selected conversion
12:30 pm12:30 GMT (UTC+0), Oct 25, 2026 = 5:00 pm17:00 AFT (UTC+4:30), Oct 25, 2026
GMT is 4 hours and 30 minutes behind AFT.
BST and AFT examples
These examples always use BST (UTC+1) and AFT (UTC+4:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
BST is 3 hours and 30 minutes behind AFT.
How the time difference changes
For most of the year, BST is 3 hours and 30 minutes behind AFT. From Oct 25, 2026 to Mar 28, 2027, GMT is 4 hours and 30 minutes behind AFT.
For most of the year, working hours of 9:00 am to 6:00 pm in BST correspond to 12:30 pm to 9:30 pm in AFT. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 1:30 pm to 10:30 pm in AFT.For most of the year, working hours of 09:00 to 18:00 in BST correspond to 12:30 to 21:30 in AFT. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 13:30 to 22:30 in AFT.
Compare BST time with AFT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 4 hours and 30 minutes behind Afghanistan Time.
12:30 pm12:30 in GMT is 5:00 pm17:00 in AFT
GMT to AFT call time
Best time for a conference call or a meeting is between 9am-1:30pm09:00-13:30 in GMT which corresponds to 1:30pm-6pm13:30-18:00 in AFT
12:30 pm12:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
5:00 pm17:00 Afghanistan Time (AFT). Offset UTC +4:30 hours
12:30 pm12:30 GMT / 5:00 pm17:00 AFT
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.
| GMT | AFT |
|---|---|
| 3:30am | |
| 4:30am | |
| 6:30am | |
| 7:30am | |
| 8:30am | |
| 9:30am | |
| 10:30am | |
| 11:30am | |
| 12:30pm | |
| 1:30pm | |
| 2:30pm | |
| 3:30pm | |
| 4:30pm | |
| 5:30pm | |
| 6:30pm | |
| 7:30pm | |
| 8:30pm | |
| 9:30pm | |
| 10:30pm | |
| 11:30pm | |
| 12:30am next day | |
| 1:30am next day | |
| 2:30am next day | |
| 3:30am next day | |
| 03:30 | |
| 04:30 | |
| 06:30 | |
| 07:30 | |
| 08:30 | |
| 09:30 | |
| 10:30 | |
| 11:30 | |
| 12:30 | |
| 13:30 | |
| 14:30 | |
| 15:30 | |
| 16:30 | |
| 17:30 | |
| 18:30 | |
| 19:30 | |
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| 22:30 | |
| 23:30 | |
| 00:30 next day | |
| 01:30 next day | |
| 02:30 next day | |
| 03:30 next day |
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.
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.
Current time in the United Kingdom: UK time now
Today the shaded areas are on UTC+0 (GMT).
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
Afghanistan Time
Offset: AFT is 4 hours and 30 minutes ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Afghanistan
Principal Cities: The largest city in the AFT time zone is Kabul in Afghanistan, with about 4.435 million people. Other major cities in this time zone include Herāt, Kandahār, Mazār-e Sharīf, Jalālābād.
Daylight Saving: Clocks in Afghanistan Time (AFT) do not change for daylight saving time, so AFT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
AFT representations, usage and related time zones
- +0430 - basic
- +04:30 - extended
- +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
- AFT - Afghanistan Time
- IRDT - Iran Daylight Time