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IST
India Standard Time
GMT +5:30
PDT/PST
Pacific Daylight Time
PST automatically adjusted to PDT time zone, that is in use
CDT/CST
Central Daylight Time
GMT -5
CST automatically adjusted to CDT time zone, that is in use
EDT/EST
Eastern Daylight Time
GMT -4
EST automatically adjusted to EDT time zone, that is in use
Time Difference
India Standard Time is 12 hours and 30 minutes ahead of Pacific Daylight Time and 10 hours and 30 minutes ahead of Central Daylight Time and 9 hours and 30 minutes ahead of Eastern Daylight Time and 5 hours and 30 minutes ahead of Universal Time Coordinated
12:30 pm12:30 in IST is 12:00 am00:00 in PDT and is 2:00 am02:00 in CDT and is 3:00 am03:00 in EDT and is 7:00 am07:00 in UTC
IST to PST call time
Best time for a conference call or a meeting is between 7:30pm-9:30pm in IST which corresponds to 6am-8am in PST
IST to CST call time
Best time for a conference call or a meeting is between 6:30pm-8:30pm in IST which corresponds to 7am-9am in CST
IST to EST call time
Best time for a conference call or a meeting is between 6pm-8pm in IST which corresponds to 7:30am-9:30am in EST
IST to UTC call time
Best time for a conference call or a meeting is between 1:30pm-6pm in IST which corresponds to 8am-12:30pm in UTC
12:30 pm12:30 India Standard Time (IST). Offset UTC +5:30 hours
12:00 am00:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
2:00 am02:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
3:00 am03:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
7:00 am07:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
12:30 pm12:30 IST / 12:00 am00:00 PDT / 2:00 am02:00 CDT / 3:00 am03:00 EDT / 7:00 am07:00 UTC
| IST | PDT | CDT | EDT | UTC |
|---|---|---|---|---|
| 12am (midnight) | 11:30 am | 1:30 pm | 2:30 pm | 6:30 pm |
| 1am | 12:30 pm | 2:30 pm | 3:30 pm | 7:30 pm |
| 2am | 1:30 pm | 3:30 pm | 4:30 pm | 8:30 pm |
| 3am | 2:30 pm | 4:30 pm | 5:30 pm | 9:30 pm |
| 4am | 3:30 pm | 5:30 pm | 6:30 pm | 10:30 pm |
| 5am | 4:30 pm | 6:30 pm | 7:30 pm | 11:30 pm |
| 6am | 5:30 pm | 7:30 pm | 8:30 pm | 12:30 am |
| 7am | 6:30 pm | 8:30 pm | 9:30 pm | 1:30 am |
| 8am | 7:30 pm | 9:30 pm | 10:30 pm | 2:30 am |
| 9am | 8:30 pm | 10:30 pm | 11:30 pm | 3:30 am |
| 10am | 9:30 pm | 11:30 pm | 12:30 am | 4:30 am |
| 11am | 10:30 pm | 12:30 am | 1:30 am | 5:30 am |
| 12pm (noon) | 11:30 pm | 1:30 am | 2:30 am | 6:30 am |
| 1pm | 12:30 am | 2:30 am | 3:30 am | 7:30 am |
| 2pm | 1:30 am | 3:30 am | 4:30 am | 8:30 am |
| 3pm | 2:30 am | 4:30 am | 5:30 am | 9:30 am |
| 4pm | 3:30 am | 5:30 am | 6:30 am | 10:30 am |
| 5pm | 4:30 am | 6:30 am | 7:30 am | 11:30 am |
| 6pm | 5:30 am | 7:30 am | 8:30 am | 12:30 pm |
| 7pm | 6:30 am | 8:30 am | 9:30 am | 1:30 pm |
| 8pm | 7:30 am | 9:30 am | 10:30 am | 2:30 pm |
| 9pm | 8:30 am | 10:30 am | 11:30 am | 3:30 pm |
| 10pm | 9:30 am | 11:30 am | 12:30 pm | 4:30 pm |
| 11pm | 10:30 am | 12:30 pm | 1:30 pm | 5:30 pm |
| 0:00 | 11:30 | 13:30 | 14:30 | 18:30 |
| 1:00 | 12:30 | 14:30 | 15:30 | 19:30 |
| 2:00 | 13:30 | 15:30 | 16:30 | 20:30 |
| 3:00 | 14:30 | 16:30 | 17:30 | 21:30 |
| 4:00 | 15:30 | 17:30 | 18:30 | 22:30 |
| 5:00 | 16:30 | 18:30 | 19:30 | 23:30 |
| 6:00 | 17:30 | 19:30 | 20:30 | 0:30 |
| 7:00 | 18:30 | 20:30 | 21:30 | 1:30 |
| 8:00 | 19:30 | 21:30 | 22:30 | 2:30 |
| 9:00 | 20:30 | 22:30 | 23:30 | 3:30 |
| 10:00 | 21:30 | 23:30 | 0:30 | 4:30 |
| 11:00 | 22:30 | 0:30 | 1:30 | 5:30 |
| 12:00 | 23:30 | 1:30 | 2:30 | 6:30 |
| 13:00 | 0:30 | 2:30 | 3:30 | 7:30 |
| 14:00 | 1:30 | 3:30 | 4:30 | 8:30 |
| 15:00 | 2:30 | 4:30 | 5:30 | 9:30 |
| 16:00 | 3:30 | 5:30 | 6:30 | 10:30 |
| 17:00 | 4:30 | 6:30 | 7:30 | 11:30 |
| 18:00 | 5:30 | 7:30 | 8:30 | 12:30 |
| 19:00 | 6:30 | 8:30 | 9:30 | 13:30 |
| 20:00 | 7:30 | 9:30 | 10:30 | 14:30 |
| 21:00 | 8:30 | 10:30 | 11:30 | 15:30 |
| 22:00 | 9:30 | 11:30 | 12:30 | 16:30 |
| 23:00 | 10:30 | 12:30 | 13:30 | 17:30 |
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
Pacific Standard Time
Offset: PST is 8 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 PST 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
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
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 Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) 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: Pacific Standard Time (PST) 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.
PST representations, usage and related time zones
W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- -08 - basic short
- -0800 - basic
- -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight 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
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- Paraguay Summer Time - UTC -3
Time zones with the GMT -8 offset:
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
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/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/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
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
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
