BST to KDT Converter
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12:00 pm12:00 GMT (UTC+0), Nov 13, 2026 = 10:00 pm22:00 KDT (UTC+10), Nov 13, 2026
GMT is 10 hours behind KDT.
BST and KDT examples
These examples always use BST (UTC+1) and KDT (UTC+10). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
BST is 9 hours behind KDT.
How the time difference changes
For most of the year, BST is 9 hours behind KDT. From Oct 25, 2026 to Mar 28, 2027, and from Oct 31, 2027 to Mar 26, 2028, GMT is 10 hours behind KDT.
For most of the year, working hours of 9:00 am to 6:00 pm in BST correspond to 6:00 pm to 3:00 am (next day) in KDT. At other times of the year, working hours of 9:00 am to 6:00 pm in GMT correspond to 7:00 pm to 4:00 am (next day) in KDT.For most of the year, working hours of 09:00 to 18:00 in BST correspond to 18:00 to 03:00 (next day) in KDT. At other times of the year, working hours of 09:00 to 18:00 in GMT correspond to 19:00 to 04:00 (next day) in KDT.
Compare BST time with KDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Greenwich Mean Time is 10 hours behind Korea Daylight Time.
12:00 pm12:00 in GMT is 10:00 pm22:00 in KDT
GMT to KDT call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in GMT which corresponds to 6pm-7pm18:00-19:00 in KDT. Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
12:00 pm12:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:00 pm22:00 Korea Daylight Time (KDT). Offset UTC +10:00 hours
12:00 pm12:00 GMT / 10:00 pm22:00 KDT
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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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
Korea Daylight Time
Offset: KDT is 10 hours ahead of Greenwich Mean Time (GMT).
KDT representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the east of the zero meridian.
- Kilo - Military abbreviation for KDT
- K - short form of 'Kilo'
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap Time