Greenwich Utc

Time Difference

Greenwich Mean Time is 0 hours ahead of Universal Time Coordinated
9:30 pm21:30 in GMT is 9:30 pm21:30 in UTC

Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard. The Royal Observatory in the UK. 1 PM ( 13:00 ) Greenwich Mean Time to Your Local Time and Worldwide Time Conversions.

GMT to UTC call time
Best time for a conference call or a meeting is between 8am-6pm in GMT which corresponds to 8am-6pm in UTC

9:30 pm21:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
9:30 pm21:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours

9:30 pm21:30 GMT / 9:30 pm21:30 UTC

GMTUTC
12am (midnight)12am (midnight)
1am1am
2am2am
3am3am
4am4am
5am5am
6am6am
7am7am
8am8am
9am9am
10am10am
11am11am
12pm (noon)12pm (noon)
1pm1pm
2pm2pm
3pm3pm
4pm4pm
5pm5pm
6pm6pm
7pm7pm
8pm8pm
9pm9pm
10pm10pm
11pm11pm
0:000:00
1:001:00
2:002:00
3:003:00
4:004:00
5:005:00
6:006:00
7:007:00
8:008:00
9:009:00
10:0010:00
11:0011:00
12:0012:00
13:0013:00
14:0014:00
15:0015:00
16:0016:00
17:0017:00
18:0018:00
19:0019:00
20:0020:00
21:0021:00
22:0022:00
23:0023:00

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.

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
Greenwich
  • +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+04:00 - UTC +4
  • GMT-05:00 - UTC -5
  • GMT - UTC +0
  • GMT+13:00 - UTC +13
  • GMT-03:00 - UTC -3
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
  • GMT - GMT
  • +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:

Greenwich Mean Time Vs Utc

International standard covering representation and exchange of dates and time-related data Where
  • 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
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • Zulu
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
  • GMT - GMT
  • +00 -
US, Canada, Mexico Time Zones

Atlantic Daylight Time (ADT) • Eastern Daylight Time (EDT) • Central Daylight Time (CDT) • Mountain Daylight Time (MDT) • Pacific Daylight Time (PDT) • Alaska Daylight Time (AKDT) • Hawaii Time • Arizona • Saskatoon • New York • Toronto • Mexico City • San Francisco • Chicago • Houston • Miami • Phoenix • Halifax • Denver • Monterrey • Chihuahua


Europe Time Zones

Greenwich Mean Time (GMT) • British Summer Time (BST) • Western European Summer Time (WEST) • Central European Summer Time (CEST) • Eastern European Summer Time (EEST) • London • Paris • Berlin • Athens • Warsaw • Kiev • Belarus • Moscow • Madrid • Stockholm • Amsterdam • Istanbul


Australia, New Zealand Time Zones

Restart mac on recovery mode. AEST • ACST • AWST •New Zealand Time (NZT) • Queensland • Adelaide • Brisbane • Canberra • Melbourne • Perth • Sydney • Auckland • Fiji • Solomon Islands • Papua New Guinea


Asia Time Zones

India • Pakistan • China • UAE • Japan • Korea • Philippines • Thailand • Hong Kong • Taiwan • Malaysia • Singapore • Jakarta • Bangladesh • Sri Lanka • Nepal • Kuwait • Saudi Arabia • Viet Nam • Oman • Israel • Jordan • Beijing • Bangalore • Kuala Lumpur • Manila • Tokyo • Seoul • Karachi • Dubai


Africa Time Zones

West Africa Time (WAT) • Central Africa Time (CAT) • East Africa Time (EAT) • Egypt • Nigeria • Kenya • Ghana • Morocco • Tanzania • Ethiopia • Uganda • South Africa • Cairo • Algiers • Casablanca • Accra • Lagos • Cape Town • Nairobi


South America Time Zones

Brazil • Argentina • Chile • Peru • Ecuador • Colombia • Venezuela • Panama • Puerto Rico • São Paulo • Manaus • Rio de Janeiro • Buenos Aires • Santiago • Lima • Quito • Bogota • Caracas

Utc And Greenwich Mean Time


Russia Time Zones

Greenwich Utc World Clock

Moscow • Novosibirsk • Yekaterinburg • Omsk • St Petersburg • Kazan • Irkutsk • Chita • Vladivostok • Sochi • Almaty • Kyrgyzstan • Uzbekistan • Tajikistan