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EDT/EST
Eastern Daylight Time
GMT -4
EST automatically adjusted to EDT time zone, that is in use
IST
India Standard Time
GMT +5:30
CDT/CST
Central Daylight Time
GMT -5
CST automatically adjusted to CDT time zone, that is in use
GMT
Greenwich Mean Time
GMT +0
Time Difference
Eastern Daylight Time is 9 hours and 30 minutes behind India Standard Time and 1 hour ahead of Central Daylight Time and 4 hours behind Greenwich Mean Time and 4 hours behind Universal Time Coordinated
9:30 pm21:30 in EDT is 7:00 am07:00 in IST and is 8:30 pm20:30 in CDT and is 1:30 am01:30 in GMT and is 1:30 am01:30 in UTC
EST to IST call time
Best time for a conference call or a meeting is between 7:30am-9:30am in EST which corresponds to 6pm-8pm in IST
EST to CST call time
Best time for a conference call or a meeting is between 9am-6pm in EST which corresponds to 8am-5pm in CST
EST to GMT call time
Best time for a conference call or a meeting is between 8am-1pm in EST which corresponds to 1pm-6pm in GMT
EST to UTC call time
Best time for a conference call or a meeting is between 8am-1pm in EST which corresponds to 1pm-6pm in UTC
9:30 pm21:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
7:00 am07:00 India Standard Time (IST). Offset UTC +5:30 hours
8:30 pm20:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
1:30 am01:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
1:30 am01:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
9:30 pm21:30 EDT / 7:00 am07:00 IST / 8:30 pm20:30 CDT / 1:30 am01:30 GMT / 1:30 am01:30 UTC
| EDT | IST | CDT | GMT | UTC |
|---|---|---|---|---|
| 12am (midnight) | 9:30 am | 11pm | 4am | 4am |
| 1am | 10:30 am | 12am (midnight) | 5am | 5am |
| 2am | 11:30 am | 1am | 6am | 6am |
| 3am | 12:30 pm | 2am | 7am | 7am |
| 4am | 1:30 pm | 3am | 8am | 8am |
| 5am | 2:30 pm | 4am | 9am | 9am |
| 6am | 3:30 pm | 5am | 10am | 10am |
| 7am | 4:30 pm | 6am | 11am | 11am |
| 8am | 5:30 pm | 7am | 12pm (noon) | 12pm (noon) |
| 9am | 6:30 pm | 8am | 1pm | 1pm |
| 10am | 7:30 pm | 9am | 2pm | 2pm |
| 11am | 8:30 pm | 10am | 3pm | 3pm |
| 12pm (noon) | 9:30 pm | 11am | 4pm | 4pm |
| 1pm | 10:30 pm | 12pm (noon) | 5pm | 5pm |
| 2pm | 11:30 pm | 1pm | 6pm | 6pm |
| 3pm | 12:30 am | 2pm | 7pm | 7pm |
| 4pm | 1:30 am | 3pm | 8pm | 8pm |
| 5pm | 2:30 am | 4pm | 9pm | 9pm |
| 6pm | 3:30 am | 5pm | 10pm | 10pm |
| 7pm | 4:30 am | 6pm | 11pm | 11pm |
| 8pm | 5:30 am | 7pm | 12am (midnight) | 12am (midnight) |
| 9pm | 6:30 am | 8pm | 1am | 1am |
| 10pm | 7:30 am | 9pm | 2am | 2am |
| 11pm | 8:30 am | 10pm | 3am | 3am |
| 0:00 | 9:30 | 23:00 | 4:00 | 4:00 |
| 1:00 | 10:30 | 0:00 | 5:00 | 5:00 |
| 2:00 | 11:30 | 1:00 | 6:00 | 6:00 |
| 3:00 | 12:30 | 2:00 | 7:00 | 7:00 |
| 4:00 | 13:30 | 3:00 | 8:00 | 8:00 |
| 5:00 | 14:30 | 4:00 | 9:00 | 9:00 |
| 6:00 | 15:30 | 5:00 | 10:00 | 10:00 |
| 7:00 | 16:30 | 6:00 | 11:00 | 11:00 |
| 8:00 | 17:30 | 7:00 | 12:00 | 12:00 |
| 9:00 | 18:30 | 8:00 | 13:00 | 13:00 |
| 10:00 | 19:30 | 9:00 | 14:00 | 14:00 |
| 11:00 | 20:30 | 10:00 | 15:00 | 15:00 |
| 12:00 | 21:30 | 11:00 | 16:00 | 16:00 |
| 13:00 | 22:30 | 12:00 | 17:00 | 17:00 |
| 14:00 | 23:30 | 13:00 | 18:00 | 18:00 |
| 15:00 | 0:30 | 14:00 | 19:00 | 19:00 |
| 16:00 | 1:30 | 15:00 | 20:00 | 20:00 |
| 17:00 | 2:30 | 16:00 | 21:00 | 21:00 |
| 18:00 | 3:30 | 17:00 | 22:00 | 22:00 |
| 19:00 | 4:30 | 18:00 | 23:00 | 23:00 |
| 20:00 | 5:30 | 19:00 | 0:00 | 0:00 |
| 21:00 | 6:30 | 20:00 | 1:00 | 1:00 |
| 22:00 | 7:30 | 21:00 | 2:00 | 2:00 |
| 23:00 | 8:30 | 22:00 | 3:00 | 3:00 |
Eastern Standard Time
Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States
Principal Cities: The largest city in the EST 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: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
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 Eastern Daylight Time (EDT).
End: Eastern Standard Time (EST) 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: Eastern Standard Time (EST) 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.
EST 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 EST
- R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- America/Atikokan
- America/Cancun
- America/Cayman
- America/Coral_Harbour
- 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/Jamaica
- America/Kentucky/Louisville
- America/Kentucky/Monticello
- America/Louisville
- America/Montreal
- America/Nassau
- America/New_York
- America/Nipigon
- America/Panama
- America/Pangnirtung
- America/Port-au-Prince
- America/Thunder_Bay
- America/Toronto
- Canada/Eastern
- EST
- EST5EDT
- Jamaica
- US/East-Indiana
- US/Eastern
- US/Michigan
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
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same
IST representations, usage and related time zones
W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- +0530 - basic
- +05:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
IANA/Olson: Reflects IST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- Asia/Calcutta
- Asia/Kolkata
IST Abbreviation: Several time zones share IST abbreviation and it could refer to these time zones
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States
Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are Chicago, Houston, Iztapalapa, Ecatepec
French: HNC - Heure Normale du Centre
Spanish: CT - Tiempo Central Estándar, CT - Zona Centro
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 Central Daylight Time (CDT).
End: Central Standard Time (CST) 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: Central Standard Time (CST) 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.
CST 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 CST
- S - short form of 'Sierra'
IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- America/Bahia_Banderas
- America/Belize
- America/Chicago
- America/Chihuahua
- America/Costa_Rica
- America/El_Salvador
- America/Guatemala
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Managua
- 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/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Regina
- America/Resolute
- America/Swift_Current
- America/Tegucigalpa
- America/Winnipeg
- CST6CDT
- Canada/Central
- Canada/Saskatchewan
- Mexico/General
- US/Central
- US/Indiana-Starke
CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- Colombia Standard Time - UTC -5
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
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+03:00 - UTC +3
- GMT - UTC +1
- GMT+06:00 - UTC +6
- GMT-01:00 - UTC -1
- GMT+11:00 - UTC +11
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
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
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
