AEST (Australian Eastern Standard Time)
GMT +10
CDT (Central Daylight Time)
GMT -5
CDT (Central Daylight Time)
GMT -5
PDT (Pacific Daylight Time)
GMT -7
CEST (Central European Summer Time)
GMT +2
NZST (New Zealand Standard Time)
GMT +12
BST (British Summer Time)
GMT +1
MDT (Mountain Daylight Time)
GMT -6

Time Difference

AEST (Australian Eastern Standard Time) is 15 hours ahead of CDT (Central Daylight Time) and 15 hours ahead of CDT (Central Daylight Time) and 17 hours ahead of PDT (Pacific Daylight Time) and 8 hours ahead of CEST (Central European Summer Time) and 2 hours ahead of and 2 hours behind of NZST (New Zealand Standard Time) and 9 hours ahead of BST (British Summer Time) and 16 hours ahead of MDT (Mountain Daylight Time)
So 1:30 pm13:30 in Sydney, Australia is 10:30 pm22:30 in Dallas, TX, USA and is 10:30 pm22:30 in Milwaukee, WI, USA and is 8:30 pm20:30 in Seattle, WA, USA and is 5:30 am05:30 in Paris, France and is 11:30 am11:30 in Singapore, Singapore and is 3:30 pm15:30 in Auckland, New Zealand and is 4:30 am04:30 in London, United Kingdom and is 9:30 pm21:30 in Calgary, Canada

1:30 pm13:30 AEST (Australian Eastern Standard Time) (Sydney, Australia). Offset UTC +10:00 hours
10:30 pm22:30 CDT (Central Daylight Time) (Dallas, TX, USA). Offset UTC -5:00 hours
10:30 pm22:30 CDT (Central Daylight Time) (Milwaukee, WI, USA). Offset UTC -5:00 hours
8:30 pm20:30 PDT (Pacific Daylight Time) (Seattle, WA, USA). Offset UTC -7:00 hours
5:30 am05:30 CEST (Central European Summer Time) (Paris, France). Offset UTC +2:00 hours
11:30 am11:30 (Singapore, Singapore). Offset UTC +8:00 hours
3:30 pm15:30 NZST (New Zealand Standard Time) (Auckland, New Zealand). Offset UTC +12:00 hours
4:30 am04:30 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
9:30 pm21:30 MDT (Mountain Daylight Time) (Calgary, Canada). Offset UTC -6:00 hours

1:30 pm13:30 Sydney, Australia / 10:30 pm22:30 Dallas, TX, USA / 10:30 pm22:30 Milwaukee, WI, USA / 8:30 pm20:30 Seattle, WA, USA / 5:30 am05:30 Paris, France / 11:30 am11:30 Singapore, Singapore / 3:30 pm15:30 Auckland, New Zealand / 4:30 am04:30 London, United Kingdom / 9:30 pm21:30 Calgary, Canada

Sydney, Australia Dallas, TX, USA Milwaukee, WI, USA Seattle, WA, USA Paris, France Singapore, Singapore Auckland, New Zealand London, United Kingdom Calgary, Canada
12am (midnight) 9am 9am 7am 4pm 10pm 2am 3pm 8am
1am 10am 10am 8am 5pm 11pm 3am 4pm 9am
2am 11am 11am 9am 6pm 12am (midnight) 4am 5pm 10am
3am 12pm (noon) 12pm (noon) 10am 7pm 1am 5am 6pm 11am
4am 1pm 1pm 11am 8pm 2am 6am 7pm 12pm (noon)
5am 2pm 2pm 12pm (noon) 9pm 3am 7am 8pm 1pm
6am 3pm 3pm 1pm 10pm 4am 8am 9pm 2pm
7am 4pm 4pm 2pm 11pm 5am 9am 10pm 3pm
8am 5pm 5pm 3pm 12am (midnight) 6am 10am 11pm 4pm
9am 6pm 6pm 4pm 1am 7am 11am 12am (midnight) 5pm
10am 7pm 7pm 5pm 2am 8am 12pm (noon) 1am 6pm
11am 8pm 8pm 6pm 3am 9am 1pm 2am 7pm
12pm (noon) 9pm 9pm 7pm 4am 10am 2pm 3am 8pm
1pm 10pm 10pm 8pm 5am 11am 3pm 4am 9pm
2pm 11pm 11pm 9pm 6am 12pm (noon) 4pm 5am 10pm
3pm 12am (midnight) 12am (midnight) 10pm 7am 1pm 5pm 6am 11pm
4pm 1am 1am 11pm 8am 2pm 6pm 7am 12am (midnight)
5pm 2am 2am 12am (midnight) 9am 3pm 7pm 8am 1am
6pm 3am 3am 1am 10am 4pm 8pm 9am 2am
7pm 4am 4am 2am 11am 5pm 9pm 10am 3am
8pm 5am 5am 3am 12pm (noon) 6pm 10pm 11am 4am
9pm 6am 6am 4am 1pm 7pm 11pm 12pm (noon) 5am
10pm 7am 7am 5am 2pm 8pm 12am (midnight) 1pm 6am
11pm 8am 8am 6am 3pm 9pm 1am 2pm 7am
0:00 9:00 9:00 7:00 16:00 22:00 2:00 15:00 8:00
1:00 10:00 10:00 8:00 17:00 23:00 3:00 16:00 9:00
2:00 11:00 11:00 9:00 18:00 0:00 4:00 17:00 10:00
3:00 12:00 12:00 10:00 19:00 1:00 5:00 18:00 11:00
4:00 13:00 13:00 11:00 20:00 2:00 6:00 19:00 12:00
5:00 14:00 14:00 12:00 21:00 3:00 7:00 20:00 13:00
6:00 15:00 15:00 13:00 22:00 4:00 8:00 21:00 14:00
7:00 16:00 16:00 14:00 23:00 5:00 9:00 22:00 15:00
8:00 17:00 17:00 15:00 0:00 6:00 10:00 23:00 16:00
9:00 18:00 18:00 16:00 1:00 7:00 11:00 0:00 17:00
10:00 19:00 19:00 17:00 2:00 8:00 12:00 1:00 18:00
11:00 20:00 20:00 18:00 3:00 9:00 13:00 2:00 19:00
12:00 21:00 21:00 19:00 4:00 10:00 14:00 3:00 20:00
13:00 22:00 22:00 20:00 5:00 11:00 15:00 4:00 21:00
14:00 23:00 23:00 21:00 6:00 12:00 16:00 5:00 22:00
15:00 0:00 0:00 22:00 7:00 13:00 17:00 6:00 23:00
16:00 1:00 1:00 23:00 8:00 14:00 18:00 7:00 0:00
17:00 2:00 2:00 0:00 9:00 15:00 19:00 8:00 1:00
18:00 3:00 3:00 1:00 10:00 16:00 20:00 9:00 2:00
19:00 4:00 4:00 2:00 11:00 17:00 21:00 10:00 3:00
20:00 5:00 5:00 3:00 12:00 18:00 22:00 11:00 4:00
21:00 6:00 6:00 4:00 13:00 19:00 23:00 12:00 5:00
22:00 7:00 7:00 5:00 14:00 20:00 0:00 13:00 6:00
23:00 8:00 8:00 6:00 15:00 21:00 1:00 14:00 7:00

AEST (Australian Eastern Standard Time)

Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia

Countries: It is used in following countries: Australia

Principal Cities: The largest city in the AEST timezone is Sydney from Australia with population about 4.627 million people. Other major cities in the area are Melbourne, Brisbane, Gold Coast, Canberra

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

Start: AEST started and clocks were set one hour back on Sunday, 05 April 2020, at 3:00 (3:00 am) local time.

End: AEST ends and clocks are set one hour forward on Sunday, 04 October 2020, at 2:00 (2:00 am) local time.

Sydney, Australia Time Zone Geo Map
Sydney, Australia timezone map
Sydney, Australia 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 east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for AEST
  • K - short form of 'Kilo'

IANA/Olson: Reflects AEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/ACT
  • Australia/Brisbane
  • Australia/Canberra
  • Australia/Currie
  • Australia/Hobart
  • Australia/Lindeman
  • Australia/Melbourne
  • Australia/NSW
  • Australia/Queensland
  • Australia/Sydney
  • Australia/Tasmania
  • Australia/Victoria

Time zones with the GMT +10 offset:

  • 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
  • GMT - GMT+10:00
  • +10 -


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) started and clocks were set one hour forward on Sunday, 08 March 2020, at 2:00 (2:00 am) local time.

End: Central Daylight Time (CDT) ends and clocks are set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Dallas, TX, USA Time Zone Geo Map
Dallas, TX, USA timezone map
Dallas, TX, 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
  • Cuba Daylight Time - UTC -4

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
  • -05 -


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) started and clocks were set one hour forward on Sunday, 08 March 2020, at 2:00 (2:00 am) local time.

End: Central Daylight Time (CDT) ends and clocks are set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Milwaukee, WI, USA Time Zone Geo Map
Milwaukee, WI, USA timezone map
Milwaukee, WI, 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
  • Cuba Daylight Time - UTC -4

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
  • -05 -


PDT (Pacific Daylight Time)

Offset: PDT is 7 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 PDT 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: Pacific Daylight Time (PDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Pacific Standard Time (PST).

Start: Pacific Daylight Time (PDT) started and clocks were set one hour forward on Sunday, 08 March 2020, at 2:00 (2:00 am) local time.

End: Pacific Daylight Time (PDT) ends and clocks are set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Seattle, WA, USA Time Zone Geo Map
Seattle, WA, USA timezone map
Seattle, WA, USA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven 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
  • Tango - Military abbreviation for PDT
  • T - short form of 'Tango'

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

Time zones with the GMT -7 offset:

  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • T - Tango Time Zone


CEST (Central European Summer Time)

Offset: CEST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Europe

Countries: It is used in following countries: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Vatican City

Principal Cities: The largest city in the CEST timezone is Berlin from Germany with population about 3.426 million people. Other major cities in the area are Madrid, Rome, Paris, Budapest

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

Start: Central European Summer Time (CEST) started and clocks were set one hour forward on Sunday, 29 March 2020, at 2:00 (2:00 am) local time.

End: Central European Summer Time (CEST) ends and clocks are set one hour back on Sunday, 25 October 2020, at 3:00 (3:00 am) local time.

German: MESZ - Mitteleuropäische Sommerzeit

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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +02 - basic short
  • +0200 - basic
  • +02:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates two 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
  • Bravo - Military abbreviation for CEST
  • B - short form of 'Bravo'

IANA/Olson: Reflects CEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Ceuta
  • Arctic/Longyearbyen
  • Atlantic/Jan_Mayen
  • CET
  • Europe/Amsterdam
  • Europe/Andorra
  • Europe/Belgrade
  • Europe/Berlin
  • Europe/Bratislava
  • Europe/Brussels
  • Europe/Budapest
  • Europe/Busingen
  • Europe/Copenhagen
  • Europe/Gibraltar
  • Europe/Ljubljana
  • Europe/Luxembourg
  • Europe/Madrid
  • Europe/Malta
  • Europe/Monaco
  • Europe/Oslo
  • Europe/Paris
  • Europe/Podgorica
  • Europe/Prague
  • Europe/Rome
  • Europe/San_Marino
  • Europe/Sarajevo
  • Europe/Skopje
  • Europe/Stockholm
  • Europe/Tirane
  • Europe/Vaduz
  • Europe/Vatican
  • Europe/Vienna
  • Europe/Warsaw
  • Europe/Zagreb
  • Europe/Zurich
  • Poland

Time zones with the GMT +2 offset:

  • CEST - Central European Summer Time
  • EET - Eastern European Time
  • MESZ - Mitteleuropäische Sommerzeit
  • B - Bravo Time Zone
  • CAT - Central Africa Time
  • IST - Israel Standard Time
  • SAST - South Africa Standard Time
  • WAST - West Africa Summer Time


Singapore, Singapore

Offset: +08 is 8 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Antarctica, Brunei, Mongolia, Malaysia, Russia, Singapore

Principal Cities: The largest city in the +08 timezone is Singapore from Singapore with population about 3.548 million people. Other major cities in the area are Kota Bharu, Kuala Lumpur, Klang, Ulaanbaatar

Daylight Saving: (+08) is not adjusted for daylight saving therefore +08 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, remains the same

Singapore, Singapore 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 east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others
  • Hotel - Military abbreviation for +08
  • H - short form of 'Hotel'

IANA/Olson: Reflects +08 time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/Casey
  • Asia/Brunei
  • Asia/Choibalsan
  • Asia/Irkutsk
  • Asia/Kuala_Lumpur
  • Asia/Kuching
  • Asia/Singapore
  • Asia/Ulaanbaatar
  • Asia/Ulan_Bator
  • Etc/GMT-8
  • Singapore

Time zones with the GMT +8 offset:

  • 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
  • GMT - GMT+08:00
  • +08 -


NZST (New Zealand Standard Time)

Offset: NZST is 12 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: Antarctica, New Zealand

Principal Cities: The largest city in the NZST timezone is Auckland from New Zealand with population about 1.535 million people. Other major cities in the area are Wellington, Christchurch, Hamilton, Tauranga

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe New Zealand Daylight Time (NZDT).

Start: NZST started and clocks were set one hour back on Sunday, 05 April 2020, at 3:00 (3:00 am) local time.

End: NZST ends and clocks are set one hour forward on Sunday, 27 September 2020, at 2:00 (2:00 am) local time.

Auckland, New Zealand Time Zone Geo Map
Auckland, New Zealand timezone map
Auckland, New Zealand representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +12 - basic short
  • +1200 - basic
  • +12:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1200 - sign character (+) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates twelve 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
  • Mike - Military abbreviation for NZST
  • M - short form of 'Mike'

IANA/Olson: Reflects NZST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland

Time zones with the GMT +12 offset:

  • ANAST - Anadyr Summer Time
  • ANAT - Anadyr Time
  • FJT - Fiji Time
  • GILT - Gilbert Island Time
  • M - Mike Time Zone
  • MAGST - Magadan Summer Time
  • MAGT - Magadan Time
  • MHT - Marshall Islands Time
  • NRT - Nauru Time
  • NZST - New Zealand Standard Time
  • PETST - Kamchatka Summer Time
  • TVT - Tuvalu Time
  • WFT - Wallis and Futuna Time
  • +12 -


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) started and clocks were set one hour forward on Sunday, 29 March 2020, at 1:00 (1:00 am) local time.

End: British Summer Time (BST) ends and clocks are set one hour back on Sunday, 25 October 2020, 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
  • Bangladesh Standard Time - UTC +6
  • Bougainville Standard Time - UTC +11

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
  • GMT - GMT
  • +01 -


MDT (Mountain Daylight Time)

Offset: MDT is 6 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 MDT timezone is Ciudad Juarez from Mexico with population about 1.512 million people. Other major cities in the area are Calgary, Chihuahua, Edmonton, El Paso

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

Start: Mountain Daylight Time (MDT) started and clocks were set one hour forward on Sunday, 08 March 2020, at 2:00 (2:00 am) local time.

End: Mountain Daylight Time (MDT) ends and clocks are set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

French: HAR - Heure Avancée des Rocheuses

Spanish: MT - Zona Pacífico

Calgary, Canada Time Zone Geo Map
Calgary, Canada timezone map
Calgary, Canada 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 MDT
  • S - short form of 'Sierra'

IANA/Olson: Reflects MDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Chihuahua
  • America/Denver
  • America/Edmonton
  • America/Inuvik
  • America/Mazatlan
  • America/Ojinaga
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Mountain

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
  • -06 -