|
PDT/PST
Pacific Daylight Time
GMT -7:00 h
PST automatically adjusted to PDT time zone, that is in use
HST (Hawaii Standard Time)
GMT -10:00 h
CDT (Central Daylight Time)
GMT -5:00 h
EDT (Eastern Daylight Time)
GMT -4:00 h
SGT
Singapore Time
GMT +8:00 h
WAT (West Africa Time)
GMT +1:00 h
BST (British Summer Time)
GMT +1:00 h
+03 ()
GMT +3:00 h
IST
India Standard Time
GMT +5:30 h
KST (Korea Standard Time)
GMT +9:00 h

Time Difference

Pacific Daylight Time is 3 hours ahead of HST (Hawaii Standard Time) and 2 hours behind of CDT (Central Daylight Time) and 3 hours behind of EDT (Eastern Daylight Time) and 15 hours behind of Singapore Time and 8 hours behind of WAT (West Africa Time) and 8 hours behind of BST (British Summer Time) and 10 hours behind of +03 () and 12 hours and 30 minutes behind of India Standard Time and 16 hours behind of KST (Korea Standard Time)
So 3:04 PM15:04 in PDT is 12:04 PM12:04 in Honolulu, Hawaii, USA and is 5:04 PM17:04 in Dallas, Texas, USA and is 6:04 PM18:04 in Boston, Massachusetts, USA and is 6:04 AM06:04 in SGT and is 11:04 PM23:04 in Lagos, Nigeria and is 11:04 PM23:04 in London, United Kingdom and is 1:04 AM01:04 in Mecca, Saudi Arabia and is 3:34 AM03:34 in IST and is 7:04 AM07:04 in Seoul, South Korea

3:04 PM15:04 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
12:04 PM12:04 HST (Hawaii Standard Time) (Honolulu, Hawaii, USA). Offset UTC -10:00 hours
5:04 PM17:04 CDT (Central Daylight Time) (Dallas, Texas, USA). Offset UTC -5:00 hours
6:04 PM18:04 EDT (Eastern Daylight Time) (Boston, Massachusetts, USA). Offset UTC -4:00 hours
6:04 AM06:04 Singapore Time (SGT). Offset UTC +8:00 hours
11:04 PM23:04 WAT (West Africa Time) (Lagos, Nigeria). Offset UTC +1:00 hour
11:04 PM23:04 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
1:04 AM01:04 +03 () (Mecca, Saudi Arabia). Offset UTC +3:00 hours
3:34 AM03:34 India Standard Time (IST). Offset UTC +5:30 hours
7:04 AM07:04 KST (Korea Standard Time) (Seoul, South Korea). Offset UTC +9:00 hours

3:04 PM15:04 PDT / 12:04 PM12:04 Honolulu, Hawaii, USA / 5:04 PM17:04 Dallas, Texas, USA / 6:04 PM18:04 Boston, Massachusetts, USA / 6:04 AM06:04 SGT / 11:04 PM23:04 Lagos, Nigeria / 11:04 PM23:04 London, United Kingdom / 1:04 AM01:04 Mecca, Saudi Arabia / 3:34 AM03:34 IST / 7:04 AM07:04 Seoul, South Korea

PDT Honolulu, Hawaii, USA Dallas, Texas, USA Boston, Massachusetts, USA SGT Lagos, Nigeria London, United Kingdom Mecca, Saudi Arabia IST Seoul, South Korea
12am (midnight) 9pm 2am 3am 3pm 8am 8am 10am 12:30 pm 4pm
1am 10pm 3am 4am 4pm 9am 9am 11am 1:30 pm 5pm
2am 11pm 4am 5am 5pm 10am 10am 12pm (noon) 2:30 pm 6pm
3am 12am (midnight) 5am 6am 6pm 11am 11am 1pm 3:30 pm 7pm
4am 1am 6am 7am 7pm 12pm (noon) 12pm (noon) 2pm 4:30 pm 8pm
5am 2am 7am 8am 8pm 1pm 1pm 3pm 5:30 pm 9pm
6am 3am 8am 9am 9pm 2pm 2pm 4pm 6:30 pm 10pm
7am 4am 9am 10am 10pm 3pm 3pm 5pm 7:30 pm 11pm
8am 5am 10am 11am 11pm 4pm 4pm 6pm 8:30 pm 12am (midnight)
9am 6am 11am 12pm (noon) 12am (midnight) 5pm 5pm 7pm 9:30 pm 1am
10am 7am 12pm (noon) 1pm 1am 6pm 6pm 8pm 10:30 pm 2am
11am 8am 1pm 2pm 2am 7pm 7pm 9pm 11:30 pm 3am
12pm (noon) 9am 2pm 3pm 3am 8pm 8pm 10pm 12:30 am 4am
1pm 10am 3pm 4pm 4am 9pm 9pm 11pm 1:30 am 5am
2pm 11am 4pm 5pm 5am 10pm 10pm 12am (midnight) 2:30 am 6am
3pm 12pm (noon) 5pm 6pm 6am 11pm 11pm 1am 3:30 am 7am
4pm 1pm 6pm 7pm 7am 12am (midnight) 12am (midnight) 2am 4:30 am 8am
5pm 2pm 7pm 8pm 8am 1am 1am 3am 5:30 am 9am
6pm 3pm 8pm 9pm 9am 2am 2am 4am 6:30 am 10am
7pm 4pm 9pm 10pm 10am 3am 3am 5am 7:30 am 11am
8pm 5pm 10pm 11pm 11am 4am 4am 6am 8:30 am 12pm (noon)
9pm 6pm 11pm 12am (midnight) 12pm (noon) 5am 5am 7am 9:30 am 1pm
10pm 7pm 12am (midnight) 1am 1pm 6am 6am 8am 10:30 am 2pm
11pm 8pm 1am 2am 2pm 7am 7am 9am 11:30 am 3pm
0:00 21:00 2:00 3:00 15:00 8:00 8:00 10:00 12:30 16:00
1:00 22:00 3:00 4:00 16:00 9:00 9:00 11:00 13:30 17:00
2:00 23:00 4:00 5:00 17:00 10:00 10:00 12:00 14:30 18:00
3:00 0:00 5:00 6:00 18:00 11:00 11:00 13:00 15:30 19:00
4:00 1:00 6:00 7:00 19:00 12:00 12:00 14:00 16:30 20:00
5:00 2:00 7:00 8:00 20:00 13:00 13:00 15:00 17:30 21:00
6:00 3:00 8:00 9:00 21:00 14:00 14:00 16:00 18:30 22:00
7:00 4:00 9:00 10:00 22:00 15:00 15:00 17:00 19:30 23:00
8:00 5:00 10:00 11:00 23:00 16:00 16:00 18:00 20:30 0:00
9:00 6:00 11:00 12:00 0:00 17:00 17:00 19:00 21:30 1:00
10:00 7:00 12:00 13:00 1:00 18:00 18:00 20:00 22:30 2:00
11:00 8:00 13:00 14:00 2:00 19:00 19:00 21:00 23:30 3:00
12:00 9:00 14:00 15:00 3:00 20:00 20:00 22:00 0:30 4:00
13:00 10:00 15:00 16:00 4:00 21:00 21:00 23:00 1:30 5:00
14:00 11:00 16:00 17:00 5:00 22:00 22:00 0:00 2:30 6:00
15:00 12:00 17:00 18:00 6:00 23:00 23:00 1:00 3:30 7:00
16:00 13:00 18:00 19:00 7:00 0:00 0:00 2:00 4:30 8:00
17:00 14:00 19:00 20:00 8:00 1:00 1:00 3:00 5:30 9:00
18:00 15:00 20:00 21:00 9:00 2:00 2:00 4:00 6:30 10:00
19:00 16:00 21:00 22:00 10:00 3:00 3:00 5:00 7:30 11:00
20:00 17:00 22:00 23:00 11:00 4:00 4:00 6:00 8:30 12:00
21:00 18:00 23:00 0:00 12:00 5:00 5:00 7:00 9:30 13:00
22:00 19:00 0:00 1:00 13:00 6:00 6:00 8:00 10:30 14:00
23:00 20:00 1:00 2:00 14:00 7:00 7:00 9:00 11:30 15:00

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Canada, Mexico, United States

Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Pacific Daylight Time (PDT).

End: PST ends annually on the same date and time. and clocks were set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

Start: PST starts annually on the same date and time. and clocks are set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

PST Time Zone Geo Map
PST timezone map
PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight 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
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'

IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Dawson
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • America/Whitehorse
  • Canada/Pacific
  • Canada/Yukon
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
  • US/Pacific-New

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

  • Pacific Standard Time - UTC -8:00 h
  • Pitcairn Standard Time - UTC -8:00 h

Time zones with the GMT -8:00 h offset:

  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • YDT - Yukon Daylight Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone


HST (Hawaii Standard Time)

Offset: HST is 10 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: United States

Principal Cities: The largest city in the HST timezone is Honolulu from USA with population about 371657 people. Other major cities in the area are Pearl City, Hilo, Kailua, Waipahu

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Hawaii Daylight Time (HDT).

End: HST ended and clocks were set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

Start: HST starts and clocks are set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

Honolulu, Hawaii, USA Time Zone Geo Map
Honolulu, Hawaii, USA timezone map
Honolulu, Hawaii, USA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -10 - basic short
  • -1000 - basic
  • -10:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -1000 - sign character (-) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates ten 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
  • Whiskey - Military abbreviation for HST
  • W - short form of 'Whiskey'

IANA/Olson: Reflects HST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Adak
  • America/Atka
  • HST
  • Pacific/Honolulu
  • Pacific/Johnston
  • US/Aleutian
  • US/Hawaii

Time zones with the GMT -10:00 h offset:

  • HAST - Hawaii-Aleutian Standard Time
  • CKT - Cook Island Time
  • HST - Hawaii Standard Time
  • TAHT - Tahiti Time
  • W - Whiskey Time Zone


CDT (Central Daylight Time)

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

Countries: It is used in following countries: Canada, Cuba, Mexico, United States

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

Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Central Standard Time (CST).

Start: Central Daylight Time (CDT) starts annually on the same date and time. and clocks were set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

End: Central Daylight Time (CDT) ends annually on the same date and time. and clocks are set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Dallas, Texas, USA Time Zone Geo Map
Dallas, Texas, USA timezone map
Dallas, Texas, USA 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 CDT
  • R - short form of 'Romeo'

IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Bahia_Banderas
  • America/Chicago
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • 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/Rainy_River
  • America/Rankin_Inlet
  • America/Resolute
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • Mexico/General
  • US/Central
  • US/Indiana-Starke

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

  • Central Daylight Time - UTC -5:00 h
  • Cuba Daylight Time - UTC -4:00 h

Time zones with the GMT -5:00 h 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
  • -05 -


EDT (Eastern Daylight Time)

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Bahamas, Canada, Haiti, Turks & Caicos Is, United States

Principal Cities: The largest city in the EDT 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

Daylight Saving: Eastern Daylight Time (EDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Eastern Standard Time (EST).

Start: Eastern Daylight Time (EDT) starts annually on the same date and time. and clocks were set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

End: Eastern Daylight Time (EDT) ends annually on the same date and time. and clocks are set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

French: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

Boston, Massachusetts, USA Time Zone Geo Map
Boston, Massachusetts, USA timezone map
Boston, Massachusetts, USA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four 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
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'

IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • 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/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan

Time zones with the GMT -4:00 h offset:

  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time
  • -04 -


WAT (West Africa Time)

Offset: WAT is 1 hour ahead Greenwich Mean Time (GMT) and is used in Africa

Countries: It is used in following countries: Angola, Benin, Congo (Dem. Rep.), Central African Rep., Congo (Rep.), Cameroon, Gabon, Equatorial Guinea, Niger, Nigeria, Sao Tome & Principe, Chad

Principal Cities: The largest city in the WAT timezone is Lagos from Nigeria with population about 9 million people. Other major cities in the area are Kinshasa, Kano, Ibadan, Luanda

Daylight Saving: West Africa Time (WAT) is not adjusted for daylight saving therefore WAT 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, West Africa Time remains the same

Lagos, Nigeria Time Zone Geo Map
Lagos, Nigeria timezone map
Lagos, Nigeria 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 WAT
  • A - short form of 'Alpha'

IANA/Olson: Reflects WAT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Bangui
  • Africa/Brazzaville
  • Africa/Douala
  • Africa/Kinshasa
  • Africa/Lagos
  • Africa/Libreville
  • Africa/Luanda
  • Africa/Malabo
  • Africa/Ndjamena
  • Africa/Niamey
  • Africa/Porto-Novo

Time zones with the GMT +1:00 h 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
  • +01 -


BST (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

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).

Start: British Summer Time (BST) starts annually on the same date and time. and clocks were set one hour forward on Sunday, March 31, 2019, at 1:00 (1:00 am) local time.

End: British Summer Time (BST) ends annually on the same date and time. and clocks are set one hour back on Sunday, October 27, 2019, at 2:00 (2:00 am) local time.

London, United Kingdom Time Zone Geo Map
London, United Kingdom timezone map
London, United Kingdom 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 +1:00 h
  • Bangladesh Standard Time - UTC +6:00 h
  • Bougainville Standard Time - UTC +11:00 h

Time zones with the GMT +1:00 h 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
  • +01 -


+03 ()

Offset: +03 is 3 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Antarctica, Bahrain, Belarus, Iraq, Kuwait, Qatar, Russia, Saudi Arabia, Turkey, Yemen

Principal Cities: The largest city in the +03 timezone is Istanbul from Turkey with population about 11.174 million people. Other major cities in the area are Baghdad, Riyadh, Ankara, Jeddah

Mecca, Saudi Arabia representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +03 - basic short
  • +0300 - basic
  • +03:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0300 - sign character (+) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates three 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
  • Charlie - Military abbreviation for +03
  • C - short form of 'Charlie'

IANA/Olson: Reflects +03 time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/Syowa
  • Asia/Aden
  • Asia/Baghdad
  • Asia/Bahrain
  • Asia/Istanbul
  • Asia/Kuwait
  • Asia/Qatar
  • Asia/Riyadh
  • Etc/GMT-3
  • Europe/Istanbul
  • Europe/Kirov
  • Europe/Minsk
  • Turkey

Time zones with the GMT +3:00 h offset:

  • EEST - Eastern European Summer Time
  • MSK - Moscow Standard Time
  • AST - Arabia Standard Time
  • C - Charlie Time Zone
  • EAT - Eastern Africa Time
  • FET - Further Eastern European Time
  • IDT - Israel Daylight Time
  • TRT - Turkey Time
  • +03 -


India Standard Time

Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: India

Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai

Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same

IST Time Zone Geo Map
IST timezone map
IST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0530 - basic
  • +05:30 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.

IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Calcutta
  • Asia/Kolkata

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

  • India Standard Time - UTC +5:30 h
  • Irish Standard Time - UTC +1:00 h
  • Israel Standard Time - UTC +2:00 h


KST (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

Seoul, South Korea Time Zone Geo Map
Seoul, South Korea timezone map
Seoul, South Korea 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 +9:00 h
  • Pyongyang Time - UTC +8:30 h

Time zones with the GMT +9:00 h 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
  • +09 -