IRKT to BST Converter
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Quick answers
Selected conversion
8:00 pm20:00 IRKT (UTC+8), Oct 13, 2026 = 1:00 pm13:00 BST (UTC+1), Oct 13, 2026
IRKT is 7 hours ahead of BST.
IRKT and BST examples
These examples always use IRKT (UTC+8) 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.
IRKT is 7 hours ahead of BST.
How the time difference changes
For most of the year, IRKT is 7 hours ahead of BST. From Oct 25, 2026 to Mar 28, 2027, IRKT is 8 hours ahead of GMT.
For most of the year, working hours of 9:00 am to 5:00 pm in IRKT correspond to 2:00 am to 10:00 am in BST. At other times of the year, working hours of 9:00 am to 5:00 pm in IRKT correspond to 1:00 am to 9:00 am in GMT.For most of the year, working hours of 09:00 to 17:00 in IRKT correspond to 02:00 to 10:00 in BST. At other times of the year, working hours of 09:00 to 17:00 in IRKT correspond to 01:00 to 09:00 in GMT.
Compare IRKT time with BST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Irkutsk Time is 7 hours ahead of British Summer Time.
8:00 pm20:00 in IRKT is 1:00 pm13:00 in BST
IRKT to BST call time
Best time for a conference call or a meeting is between 4pm-5pm16:00-17:00 in IRKT which corresponds to 9am-10am09:00-10:00 in BST
8:00 pm20:00 Irkutsk Time (IRKT). Offset UTC +8:00 hours
1:00 pm13:00 British Summer Time (BST). Offset UTC +1:00 hour
8:00 pm20:00 IRKT / 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.
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Irkutsk Time
Offset: IRKT is 8 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Russia
Principal Cities: The largest city in the IRKT time zone is Irkutsk in Russia, with about 623,869 people. Other major cities in this time zone include Ulan-Ude, Bratsk, Angarsk, Ust’-Ilimsk.
Daylight Saving: Clocks in Irkutsk Time (IRKT) do not change for daylight saving time, so IRKT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
IRKT representations, usage and related time zones
- +08 - basic short
- +0800 - basic
- +08:00 - extended
- +0800 - sign character (+) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the east of the zero meridian.
- Hotel - Military abbreviation for IRKT
- H - short form of 'Hotel'
- ACT - ASEAN Common Time
- AWST - Australian Western Standard Time
- BNT - Brunei Darussalam Time
- CAST - Casey Time
- CHOT - Choibalsan Time
- CST - China Standard Time
- H - Hotel Time Zone
- HKT - Hong Kong Time
- HOVST - Hovd Summer Time
- IRKT - Irkutsk Time
- KRAST - Krasnoyarsk Summer Time
- MYT - Malaysia Time
- PHT - Philippine Time
- SGT - Singapore Time
- ULAT - Ulaanbaatar Time
- WITA - Central Indonesian 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