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UTC
Universal Time Coordinated
GMT +0
EDT
Eastern Daylight Time
GMT -4
GMT
Greenwich Mean Time
GMT +0
MDT/MST
Mountain Daylight Time
GMT -6
MST automatically adjusted to MDT time zone, that is in use
CDT
Central Daylight Time
GMT -5
Time Difference
Universal Time Coordinated is 4 hours ahead of Eastern Daylight Time and 0 hours ahead of Greenwich Mean Time and 6 hours ahead of Mountain Daylight Time and 5 hours ahead of Central Daylight Time and 9 hours behind Japan Standard Time
6:30 am06:30 in UTC is 2:30 am02:30 in EDT and is 6:30 am06:30 in GMT and is 12:30 am00:30 in MDT and is 1:30 am01:30 in CDT and is 3:30 pm15:30 in JST
UTC to EDT call time
Best time for a conference call or a meeting is between 12pm-6pm in UTC which corresponds to 8am-2pm in EDT
UTC to GMT call time
Best time for a conference call or a meeting is between 8am-6pm in UTC which corresponds to 8am-6pm in GMT
UTC to MST call time
Best time for a conference call or a meeting is between 3pm-6pm in UTC which corresponds to 8am-11am in MST
UTC to CDT call time
Best time for a conference call or a meeting is between 1pm-6pm in UTC which corresponds to 8am-1pm in CDT
UTC to JST call time
Best time for a conference call or a meeting is between 8am-10am in UTC which corresponds to 5pm-7pm in JST
6:30 am06:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
2:30 am02:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
6:30 am06:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
12:30 am00:30 Mountain Daylight Time (MDT). Offset UTC -6:00 hours
1:30 am01:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
3:30 pm15:30 Japan Standard Time (JST). Offset UTC +9:00 hours
6:30 am06:30 UTC / 2:30 am02:30 EDT / 6:30 am06:30 GMT / 12:30 am00:30 MDT / 1:30 am01:30 CDT / 3:30 pm15:30 JST
| UTC | EDT | GMT | MDT | CDT | JST |
|---|---|---|---|---|---|
| 12am (midnight) | 8pm | 12am (midnight) | 6pm | 7pm | 9am |
| 1am | 9pm | 1am | 7pm | 8pm | 10am |
| 2am | 10pm | 2am | 8pm | 9pm | 11am |
| 3am | 11pm | 3am | 9pm | 10pm | 12pm (noon) |
| 4am | 12am (midnight) | 4am | 10pm | 11pm | 1pm |
| 5am | 1am | 5am | 11pm | 12am (midnight) | 2pm |
| 6am | 2am | 6am | 12am (midnight) | 1am | 3pm |
| 7am | 3am | 7am | 1am | 2am | 4pm |
| 8am | 4am | 8am | 2am | 3am | 5pm |
| 9am | 5am | 9am | 3am | 4am | 6pm |
| 10am | 6am | 10am | 4am | 5am | 7pm |
| 11am | 7am | 11am | 5am | 6am | 8pm |
| 12pm (noon) | 8am | 12pm (noon) | 6am | 7am | 9pm |
| 1pm | 9am | 1pm | 7am | 8am | 10pm |
| 2pm | 10am | 2pm | 8am | 9am | 11pm |
| 3pm | 11am | 3pm | 9am | 10am | 12am (midnight) |
| 4pm | 12pm (noon) | 4pm | 10am | 11am | 1am |
| 5pm | 1pm | 5pm | 11am | 12pm (noon) | 2am |
| 6pm | 2pm | 6pm | 12pm (noon) | 1pm | 3am |
| 7pm | 3pm | 7pm | 1pm | 2pm | 4am |
| 8pm | 4pm | 8pm | 2pm | 3pm | 5am |
| 9pm | 5pm | 9pm | 3pm | 4pm | 6am |
| 10pm | 6pm | 10pm | 4pm | 5pm | 7am |
| 11pm | 7pm | 11pm | 5pm | 6pm | 8am |
| 0:00 | 20:00 | 0:00 | 18:00 | 19:00 | 9:00 |
| 1:00 | 21:00 | 1:00 | 19:00 | 20:00 | 10:00 |
| 2:00 | 22:00 | 2:00 | 20:00 | 21:00 | 11:00 |
| 3:00 | 23:00 | 3:00 | 21:00 | 22:00 | 12:00 |
| 4:00 | 0:00 | 4:00 | 22:00 | 23:00 | 13:00 |
| 5:00 | 1:00 | 5:00 | 23:00 | 0:00 | 14:00 |
| 6:00 | 2:00 | 6:00 | 0:00 | 1:00 | 15:00 |
| 7:00 | 3:00 | 7:00 | 1:00 | 2:00 | 16:00 |
| 8:00 | 4:00 | 8:00 | 2:00 | 3:00 | 17:00 |
| 9:00 | 5:00 | 9:00 | 3:00 | 4:00 | 18:00 |
| 10:00 | 6:00 | 10:00 | 4:00 | 5:00 | 19:00 |
| 11:00 | 7:00 | 11:00 | 5:00 | 6:00 | 20:00 |
| 12:00 | 8:00 | 12:00 | 6:00 | 7:00 | 21:00 |
| 13:00 | 9:00 | 13:00 | 7:00 | 8:00 | 22:00 |
| 14:00 | 10:00 | 14:00 | 8:00 | 9:00 | 23:00 |
| 15:00 | 11:00 | 15:00 | 9:00 | 10:00 | 0:00 |
| 16:00 | 12:00 | 16:00 | 10:00 | 11:00 | 1:00 |
| 17:00 | 13:00 | 17:00 | 11:00 | 12:00 | 2:00 |
| 18:00 | 14:00 | 18:00 | 12:00 | 13:00 | 3:00 |
| 19:00 | 15:00 | 19:00 | 13:00 | 14:00 | 4:00 |
| 20:00 | 16:00 | 20:00 | 14:00 | 15:00 | 5:00 |
| 21:00 | 17:00 | 21:00 | 15:00 | 16:00 | 6:00 |
| 22:00 | 18:00 | 22:00 | 16:00 | 17:00 | 7:00 |
| 23:00 | 19:00 | 23:00 | 17:00 | 18:00 | 8:00 |
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
- 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
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
French: HAE - Heure Avancée de l'Est
Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste
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) started on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Eastern Daylight Time (EDT) ends on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
EDT 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 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
- HLV - Hora Legal de Venezuela
- PYT - Paraguay Time
- Q - Quebec Time Zone
- VET - Venezuelan Standard Time
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
- +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 - UTC +1
- GMT+03:00 - UTC +3
- GMT+06:00 - UTC +6
- GMT+11:00 - UTC +11
- GMT-01:00 - UTC -1
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
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 Phoenix from USA with population about 1.446 million people. Other major cities in the area are Calgary, Edmonton, El Paso, Denver
French: HNR - Heure Normale des Rocheuses
Spanish: MT - Zona Pacífico
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Mountain Daylight Time (MDT).
End: Mountain Standard Time (MST) has ended on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Mountain Standard Time (MST) starts on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am. Standard time starts annually the on first Sunday of November.
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/Ciudad_Juarez
- America/Creston
- America/Dawson
- America/Dawson_Creek
- America/Denver
- America/Edmonton
- America/Fort_Nelson
- America/Hermosillo
- America/Inuvik
- America/Mazatlan
- America/Phoenix
- America/Shiprock
- America/Whitehorse
- America/Yellowknife
- Canada/Mountain
- Canada/Yukon
- MST
- MST7MDT
- Mexico/BajaSur
- Navajo
- US/Arizona
- US/Mountain
MST Abbreviation: Several time zones share MST abbreviation and it could refer to these time zones
- Mountain Standard Time - UTC -7
- Moscow Standard Time - UTC +3
- Mauritius Standard Time - UTC +4
- Magadan Standard Time - UTC +11
Time zones with the GMT -7 offset:
- MST - Mountain Standard Time
- PDT - Pacific Daylight Time
- YST - Yukon Standard Time
- T - Tango Time Zone
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 Chicago from USA with population about 2.696 million people. Other major cities in the area are Havana, Houston, Ciudad Juarez, San Antonio
French: HAC - Heure Avancée du Centre
Spanish: CT - Zona Centro
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 on Sunday, March 10, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 10, 2024, 3:00 am. Daylight saving starts annually the on second Sunday of March
End: Central Daylight Time (CDT) ends on Sunday, November 3, 2024 at 2:00 am local time and clocks are set one hour back to Sunday, November 3, 2024, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November
CDT 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/Chicago
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Matamoros
- America/Menominee
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Resolute
- America/Winnipeg
- CST6CDT
- Canada/Central
- 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
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Japan
Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo
Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST 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, Japan Standard Time remains the same
JST 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 JST
- I - short form of 'India'
IANA/Olson: Reflects JST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- Asia/Tokyo
- Japan
Time zones with the GMT +9 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
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
