BST to EST to CST to GMT to KST (2024)

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BST

British Summer Time

GMT +1

EDT/EST

EST automatically adjusted to EDT time zone, that is in use

CDT/CST

Central Daylight Time

GMT -5

CST automatically adjusted to CDT time zone, that is in use

GMT

Greenwich Mean Time

GMT +0

KST

Korea Standard Time

GMT +9

Time Difference

British Summer Time is 5 hours ahead of Eastern Daylight Time and 6 hours ahead of Central Daylight Time and 1 hour ahead of Greenwich Mean Time and 8 hours behind Korea Standard Time
6:30 pm18:30 in BST is 1:30 pm13:30 in EDT and is 12:30 pm12:30 in CDT and is 5:30 pm17:30 in GMT and is 2:30 am02:30 in KST

BST to EST call time
Best time for a conference call or a meeting is between 2pm-6pm in BST which corresponds to 8am-12pm in EST
BST to CST call time
Best time for a conference call or a meeting is between 3pm-6pm in BST which corresponds to 8am-11am in CST
BST to GMT call time
Best time for a conference call or a meeting is between 9am-6pm in BST which corresponds to 8am-5pm in GMT
BST to KST call time
Best time for a conference call or a meeting is between 8am-10am in BST which corresponds to 4pm-6pm in KST

6:30 pm18:30 British Summer Time (BST). Offset UTC +1:00 hour
1:30 pm13:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
12:30 pm12:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
5:30 pm17:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
2:30 am02:30 Korea Standard Time (KST). Offset UTC +9:00 hours

6:30 pm18:30 BST / 1:30 pm13:30 EDT / 12:30 pm12:30 CDT / 5:30 pm17:30 GMT / 2:30 am02:30 KST

BST EDT CDT GMT KST
12am (midnight) 7pm 6pm 11pm 8am
1am 8pm 7pm 12am (midnight) 9am
2am 9pm 8pm 1am 10am
3am 10pm 9pm 2am 11am
4am 11pm 10pm 3am 12pm (noon)
5am 12am (midnight) 11pm 4am 1pm
6am 1am 12am (midnight) 5am 2pm
7am 2am 1am 6am 3pm
8am 3am 2am 7am 4pm
9am 4am 3am 8am 5pm
10am 5am 4am 9am 6pm
11am 6am 5am 10am 7pm
12pm (noon) 7am 6am 11am 8pm
1pm 8am 7am 12pm (noon) 9pm
2pm 9am 8am 1pm 10pm
3pm 10am 9am 2pm 11pm
4pm 11am 10am 3pm 12am (midnight)
5pm 12pm (noon) 11am 4pm 1am
6pm 1pm 12pm (noon) 5pm 2am
7pm 2pm 1pm 6pm 3am
8pm 3pm 2pm 7pm 4am
9pm 4pm 3pm 8pm 5am
10pm 5pm 4pm 9pm 6am
11pm 6pm 5pm 10pm 7am
0:00 19:00 18:00 23:00 8:00
1:00 20:00 19:00 0:00 9:00
2:00 21:00 20:00 1:00 10:00
3:00 22:00 21:00 2:00 11:00
4:00 23:00 22:00 3:00 12:00
5:00 0:00 23:00 4:00 13:00
6:00 1:00 0:00 5:00 14:00
7:00 2:00 1:00 6:00 15:00
8:00 3:00 2:00 7:00 16:00
9:00 4:00 3:00 8:00 17:00
10:00 5:00 4:00 9:00 18:00
11:00 6:00 5:00 10:00 19:00
12:00 7:00 6:00 11:00 20:00
13:00 8:00 7:00 12:00 21:00
14:00 9:00 8:00 13:00 22:00
15:00 10:00 9:00 14:00 23:00
16:00 11:00 10:00 15:00 0:00
17:00 12:00 11:00 16:00 1:00
18:00 13:00 12:00 17:00 2:00
19:00 14:00 13:00 18:00 3:00
20:00 15:00 14:00 19:00 4:00
21:00 16:00 15:00 20:00 5:00
22:00 17:00 16:00 21:00 6:00
23:00 18:00 17:00 22:00 7:00

British Summer Time

Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe

Countries: It is used in following countries: Britain (UK), Guernsey, Isle of Man, Jersey

Principal Cities: The largest city in the BST timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Birmingham, Glasgow, Liverpool, Saint Helier

BST to EST to CST to GMT to KST (2)

Daylight Saving: British Summer Time (BST) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Greenwich Mean Time (GMT).

BST to EST to CST to GMT to KST (3)Start: British Summer Time (BST) started on Sunday, March 31, 2024 at 1:00 am local time and clocks were set one hour forward to Sunday, March 31, 2024, 2:00 am. Daylight saving starts annually the on last Sunday of March

BST to EST to CST to GMT to KST (4)End: British Summer Time (BST) ends on Sunday, October 27, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, October 27, 2024, 1:00 am local standard time instead. Daylight saving ends annually the on last Sunday of October

BST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

  • +01 - basic short
  • +0100 - basic
  • +01:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

  • +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

  • Alpha - Military abbreviation for BST
  • A - short form of 'Alpha'

IANA/Olson: Reflects BST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

  • Europe/Belfast
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire

BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones

  • British Summer Time - UTC +1
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11
  • Brasilia Standard Time - UTC -3

Time zones with the GMT +1 offset:

  • 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

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States

Principal Cities: The largest city in the EST timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are Toronto, Montreal, Brooklyn, Borough of Queens

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

BST to EST to CST to GMT to KST (5)

Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).

BST to EST to CST to GMT to KST (6)End: Eastern Standard Time (EST) has ended on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.

BST to EST to CST to GMT to KST (7)Start: Eastern Standard Time (EST) starts on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am. Standard time starts annually the on first Sunday of November.

EST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates five hour and zero minutes time differences to the west of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

  • Romeo - Military abbreviation for EST
  • R - short form of 'Romeo'

IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan

Time zones with the GMT -5 offset:

  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

Central Standard Time

Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States

Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are Chicago, Houston, Iztapalapa, Ecatepec

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

BST to EST to CST to GMT to KST (8)

Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Central Daylight Time (CDT).

BST to EST to CST to GMT to KST (9)End: Central Standard Time (CST) has ended on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.

BST to EST to CST to GMT to KST (10)Start: Central Standard Time (CST) starts on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am. Standard time starts annually the on first Sunday of November.

CST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates six hour and zero minutes time differences to the west of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

  • Sierra - Military abbreviation for CST
  • S - short form of 'Sierra'

IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

  • America/Bahia_Banderas
  • America/Belize
  • America/Chicago
  • America/Chihuahua
  • America/Costa_Rica
  • America/El_Salvador
  • America/Guatemala
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Managua
  • America/Matamoros
  • America/Menominee
  • America/Merida
  • America/Mexico_City
  • America/Monterrey
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Regina
  • America/Resolute
  • America/Swift_Current
  • America/Tegucigalpa
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • Canada/Saskatchewan
  • Mexico/General
  • US/Central
  • US/Indiana-Starke

CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones

  • Central Standard Time - UTC -6
  • China Standard Time - UTC +8
  • Cuba Standard Time - UTC -5
  • Colombia Standard Time - UTC -5

Time zones with the GMT -6 offset:

  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone

Greenwich Mean Time

Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries: It is used in following countries: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo

Principal Cities: The largest city in the GMT timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra

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 for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

BST to EST to CST to GMT to KST (11)

GMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

  • Zulu - Military abbreviation for GMT
  • Z - short form of 'Zulu'

IANA/Olson: Reflects GMT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

  • Africa/Abidjan
  • Africa/Accra
  • Africa/Bamako
  • Africa/Banjul
  • Africa/Bissau
  • Africa/Conakry
  • Africa/Dakar
  • Africa/Freetown
  • Africa/Lome
  • Africa/Monrovia
  • Africa/Nouakchott
  • Africa/Ouagadougou
  • Africa/Sao_Tome
  • Africa/Timbuktu
  • America/Danmarkshavn
  • Atlantic/Reykjavik
  • Atlantic/St_Helena
  • Eire
  • Etc/GMT
  • Etc/GMT+0
  • Etc/GMT-0
  • Etc/GMT0
  • Etc/Greenwich
  • Europe/Belfast
  • Europe/Dublin
  • Europe/Guernsey
  • Europe/Isle_of_Man
  • Europe/Jersey
  • Europe/London
  • GB
  • GB-Eire
  • GMT
  • GMT+0
  • GMT-0
  • GMT0
  • Greenwich
  • Iceland

GMT Abbreviation: Several time zones share GMT abbreviation and it could refer to these time zones

  • Greenwich Mean Time - UTC +0
  • GMT - UTC +1
  • GMT+03:00 - UTC +3
  • GMT+06:00 - UTC +6
  • GMT+11:00 - UTC +11
  • GMT-01:00 - UTC -1

Time zones with the GMT +0 offset:

  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Korea Standard Time

Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Korea (North), Korea (South)

Principal Cities: The largest city in the KST timezone is Seoul from South Korea with population about 10.349 million people. Other major cities in the area are Busan, Pyongyang, Incheon, Daegu

Daylight Saving: Korea Standard Time (KST) is not adjusted for daylight saving therefore KST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Korea Standard Time remains the same

BST to EST to CST to GMT to KST (12)

KST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

  • +09 - basic short
  • +0900 - basic
  • +09:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

  • +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

  • India - Military abbreviation for KST
  • I - short form of 'India'

IANA/Olson: Reflects KST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

  • Asia/Pyongyang
  • Asia/Seoul
  • ROK

KST Abbreviation: Several time zones share KST abbreviation and it could refer to these time zones

  • Korea Standard Time - UTC +9
  • Pyongyang Time - UTC +8:30

Time zones with the GMT +9 offset:

  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time

EST to IST GMT to EST PST to EST EST to GMT PST to GMT

BST to EST to CST to GMT to KST (2024)
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