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UTC
Universal Time Coordinated
GMT 0:00 h
EEST (Eastern European Summer Time)
GMT +3:00 h
BST (British Summer Time)
GMT +1:00 h
EDT (Eastern Daylight Time)
GMT -4:00 h
AEST (Australian Eastern Standard Time)
GMT +10:00 h

Time Difference

Universal Time Coordinated is 3 hours behind of EEST (Eastern European Summer Time) and 1 hours behind of BST (British Summer Time) and 4 hours ahead of EDT (Eastern Daylight Time) and 10 hours behind of AEST (Australian Eastern Standard Time)
So 8:30 PM20:30 in UTC is 11:30 PM23:30 in Amman, Jordan and is 9:30 PM21:30 in London, United Kingdom and is 4:30 PM16:30 in New York City, New York, USA and is 6:30 AM06:30 in Sydney, Australia

8:30 PM20:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
11:30 PM23:30 EEST (Eastern European Summer Time) (Amman, Jordan). Offset UTC +3:00 hours
9:30 PM21:30 BST (British Summer Time) (London, United Kingdom). Offset UTC +1:00 hour
4:30 PM16:30 EDT (Eastern Daylight Time) (New York City, New York, USA). Offset UTC -4:00 hours
6:30 AM06:30 AEST (Australian Eastern Standard Time) (Sydney, Australia). Offset UTC +10:00 hours

8:30 PM20:30 UTC / 11:30 PM23:30 Amman, Jordan / 9:30 PM21:30 London, United Kingdom / 4:30 PM16:30 New York City, New York, USA / 6:30 AM06:30 Sydney, Australia

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

Universal Time Coordinated

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

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.

UTC 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 UTC
  • Z - short form of 'Zulu'

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

Time zones with the GMT 0:00 h 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
  • +00 -


EEST (Eastern European Summer Time)

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

Countries: It is used in following countries: Aaland Islands, Bulgaria, Cyprus, Estonia, Finland, Greece, Jordan, Lebanon, Lithuania, Latvia, Moldova, Palestine, Romania, Syria, Ukraine

Principal Cities: The largest city in the EEST timezone is Kiev from Ukraine with population about 2.798 million people. Other major cities in the area are Beirut, Bucharest, Aleppo, Damascus

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

Start: Eastern European Summer Time (EEST) started and clocks were set one hour forward on Friday, March 30, 2018, at 0:00 (0:00 am) local time.

End: Eastern European Summer Time (EEST) ends and clocks are set one hour back on Friday, October 26, 2018, at 1:00 (1:00 am) local time.

Amman, Jordan 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 EEST
  • C - short form of 'Charlie'

IANA/Olson: Reflects EEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Africa/Cairo
  • Asia/Amman
  • Asia/Beirut
  • Asia/Damascus
  • Asia/Gaza
  • Asia/Hebron
  • Asia/Istanbul
  • Asia/Nicosia
  • EET
  • Egypt
  • Europe/Athens
  • Europe/Bucharest
  • Europe/Chisinau
  • Europe/Helsinki
  • Europe/Istanbul
  • Europe/Kiev
  • Europe/Mariehamn
  • Europe/Nicosia
  • Europe/Riga
  • Europe/Sofia
  • Europe/Tallinn
  • Europe/Tiraspol
  • Europe/Uzhgorod
  • Europe/Vilnius
  • Europe/Zaporozhye
  • 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 -


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 25, 2018, at 1:00 (1:00 am) local time.

End: British Summer Time (BST) ends and clocks are set one hour back on Sunday, October 28, 2018, 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


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 the Second Sunday of March at 2:00 AM local time and clocks were set one hour forward on Sunday, March 11, 2018, 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 4, 2018, 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
  • -04 -


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 1, 2018, at 3:00 (3:00 am) local time.

End: AEST ends and clocks are set one hour forward on Sunday, October 7, 2018, 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
  • KDT - Korea Daylight Time
  • PGT - Papua New Guinea Time
  • VLAT - Vladivostok Time
  • YAKST - Yakutsk Summer Time
  • YAPT - Yap Time
  • +10 -