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MDT/MST
Mountain Daylight Time
GMT -6:00 h
MST automatically adjusted to MDT time zone, that is in use
BST (British Summer Time)
GMT +1:00 h
EDT (Eastern Daylight Time)
GMT -4:00 h
PDT (Pacific Daylight Time)
GMT -7:00 h
NZST (New Zealand Standard Time)
GMT +12:00 h
AEST (Australian Eastern Standard Time)
GMT +10:00 h

Time Difference

Mountain Daylight Time is 7 hours behind of BST (British Summer Time) and 2 hours behind of EDT (Eastern Daylight Time) and 1 hour ahead of PDT (Pacific Daylight Time) and 18 hours behind of NZST (New Zealand Standard Time) and 16 hours behind of AEST (Australian Eastern Standard Time)
So 1:00 PM13:00 in MDT is 8:00 PM20:00 in London, United Kingdom and is 3:00 PM15:00 in New York City, New York, USA and is 12:00 PM12:00 in Los Angeles, California, USA and is 7:00 AM07:00 in Auckland, New Zealand and is 5:00 AM05:00 in Sydney, Australia

1:00 PM13:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
8:00 PM20:00 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
3:00 PM15:00 EDT (Eastern Daylight Time) (New York City, New York, USA). Offset UTC -4:00 hours
12:00 PM12:00 PDT (Pacific Daylight Time) (Los Angeles, California, USA). Offset UTC -7:00 hours
7:00 AM07:00 NZST (New Zealand Standard Time) (Auckland, New Zealand). Offset UTC +12:00 hours
5:00 AM05:00 AEST (Australian Eastern Standard Time) (Sydney, Australia). Offset UTC +10:00 hours

1:00 PM13:00 MDT / 8:00 PM20:00 London, United Kingdom / 3:00 PM15:00 New York City, New York, USA / 12:00 PM12:00 Los Angeles, California, USA / 7:00 AM07:00 Auckland, New Zealand / 5:00 AM05:00 Sydney, Australia

MDT London, United Kingdom New York City, New York, USA Los Angeles, California, USA Auckland, New Zealand Sydney, Australia
12am (midnight) 7am 2am 11pm 6pm 4pm
1am 8am 3am 12am (midnight) 7pm 5pm
2am 9am 4am 1am 8pm 6pm
3am 10am 5am 2am 9pm 7pm
4am 11am 6am 3am 10pm 8pm
5am 12pm (noon) 7am 4am 11pm 9pm
6am 1pm 8am 5am 12am (midnight) 10pm
7am 2pm 9am 6am 1am 11pm
8am 3pm 10am 7am 2am 12am (midnight)
9am 4pm 11am 8am 3am 1am
10am 5pm 12pm (noon) 9am 4am 2am
11am 6pm 1pm 10am 5am 3am
12pm (noon) 7pm 2pm 11am 6am 4am
1pm 8pm 3pm 12pm (noon) 7am 5am
2pm 9pm 4pm 1pm 8am 6am
3pm 10pm 5pm 2pm 9am 7am
4pm 11pm 6pm 3pm 10am 8am
5pm 12am (midnight) 7pm 4pm 11am 9am
6pm 1am 8pm 5pm 12pm (noon) 10am
7pm 2am 9pm 6pm 1pm 11am
8pm 3am 10pm 7pm 2pm 12pm (noon)
9pm 4am 11pm 8pm 3pm 1pm
10pm 5am 12am (midnight) 9pm 4pm 2pm
11pm 6am 1am 10pm 5pm 3pm
0:00 7:00 2:00 23:00 18:00 16:00
1:00 8:00 3:00 0:00 19:00 17:00
2:00 9:00 4:00 1:00 20:00 18:00
3:00 10:00 5:00 2:00 21:00 19:00
4:00 11:00 6:00 3:00 22:00 20:00
5:00 12:00 7:00 4:00 23:00 21:00
6:00 13:00 8:00 5:00 0:00 22:00
7:00 14:00 9:00 6:00 1:00 23:00
8:00 15:00 10:00 7:00 2:00 0:00
9:00 16:00 11:00 8:00 3:00 1:00
10:00 17:00 12:00 9:00 4:00 2:00
11:00 18:00 13:00 10:00 5:00 3:00
12:00 19:00 14:00 11:00 6:00 4:00
13:00 20:00 15:00 12:00 7:00 5:00
14:00 21:00 16:00 13:00 8:00 6:00
15:00 22:00 17:00 14:00 9:00 7:00
16:00 23:00 18:00 15:00 10:00 8:00
17:00 0:00 19:00 16:00 11:00 9:00
18:00 1:00 20:00 17:00 12:00 10:00
19:00 2:00 21:00 18:00 13:00 11:00
20:00 3:00 22:00 19:00 14:00 12:00
21:00 4:00 23:00 20:00 15:00 13:00
22:00 5:00 0:00 21:00 16:00 14:00
23:00 6:00 1:00 22:00 17:00 15:00

Mountain Standard Time

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

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

End: MST ends annually the Second Sunday of March at 2:00 AM local time and clocks were set one hour forward on Sunday, March 12, 2017, at 2:00 (2:00 am) local time.

Start: MST starts annually the First Sunday of November at 2:00 AM local time and clocks are set one hour back on Sunday, November 5, 2017, at 2:00 (2:00 am) local time.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

MST Time Zone Geo Map
MST timezone map
MST 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 MST
  • T - short form of 'Tango'

IANA/Olson: Reflects MST 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/Creston
  • America/Dawson_Creek
  • America/Denver
  • America/Edmonton
  • America/Hermosillo
  • America/Inuvik
  • America/Mazatlan
  • America/Ojinaga
  • America/Phoenix
  • America/Shiprock
  • America/Yellowknife
  • Canada/Mountain
  • MST
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Arizona
  • US/Mountain

Time zones with the GMT -7:00 h offset:

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


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, March 26, 2017, at 1:00 (1:00 am) local time.

End: British Summer Time (BST) ends and clocks are set one hour back on Sunday, October 29, 2017, 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
  • WEST -
  • CET -


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, 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 the Second Sunday of March at 2:00 AM local time and clocks were set one hour forward on Sunday, March 12, 2017, at 2:00 (2:00 am) local time.

End: Eastern Daylight Time (EDT) ends annually the First Sunday of November at 2:00 AM local time and clocks are set one hour back on Sunday, November 5, 2017, 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

New York City, New York, USA Time Zone Geo Map
New York City, New York, USA timezone map
New York City, New York, 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
  • CDT -
  • -04 -
  • AST -


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) starts annually the Second Sunday of March at 2:00 AM local time and clocks were set one hour forward on Sunday, March 12, 2017, at 2:00 (2:00 am) local time.

End: Pacific Daylight Time (PDT) ends annually the First Sunday of November at 2:00 AM local time and clocks are set one hour back on Sunday, November 5, 2017, at 2:00 (2:00 am) local time.

French: HAP - Heure Avancée du Pacifique

Spanish: PT - Zona Noroeste

Los Angeles, California, USA Time Zone Geo Map
Los Angeles, California, USA timezone map
Los Angeles, California, 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/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

Time zones with the GMT -7:00 h offset:

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


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 417,910 people. Other major cities in the area are Wellington, Christchurch, Manukau City, Waitakere

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 starts annually the First Sunday of April at 3:00 AM local time and clocks were set one hour back on Sunday, April 2, 2017, at 3:00 (3:00 am) local time.

End: NZST ends annually the Last Sunday of September at 2:00 AM local time and clocks are set one hour forward on Sunday, September 24, 2017, at 2:00 (2:00 am) local time.

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 +12:00 h 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 -


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, April 2, 2017, at 3:00 (3:00 am) local time.

End: AEST ends and clocks are set one hour forward on Sunday, October 1, 2017, 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'

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

  • AEST - Australian Eastern Standard Time
  • CHUT - Chuuk Time
  • ChST - Chamorro Standard Time
  • K - Kilo Time Zone
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time
  • +10 -
  • +10 -