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- EST to IST to CST to KST to PST
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EDT/EST
Eastern Daylight Time
GMT -4
EST automatically adjusted to EDT time zone, that is in use
CDT/CST
Central Daylight Time
GMT -5
CST automatically adjusted to CDT time zone, that is in use
KST
Korea Standard Time
GMT +9
PDT/PST
Pacific Daylight Time
GMT -7
PST automatically adjusted to PDT time zone, that is in use
Time Difference
Eastern Daylight Time is 9 hours and 30 minutes behind India Standard Time and 1 hour ahead of Central Daylight Time and 13 hours behind Korea Standard Time and 3 hours ahead of Pacific Daylight Time
4:00 am04:00 in EDT is 1:30 pm13:30 in IST and is 3:00 am03:00 in CDT and is 5:00 pm17:00 in KST and is 1:00 am01:00 in PDT
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 KST call time
Best time for a conference call or a meeting is between 6am-8am in EST which corresponds to 8pm-10pm in KST
EST to PST call time
Best time for a conference call or a meeting is between 11am-6pm in EST which corresponds to 8am-3pm in PST
4:00 am04:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
1:30 pm13:30 India Standard Time (IST). Offset UTC +5:30 hours
3:00 am03:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
5:00 pm17:00 Korea Standard Time (KST). Offset UTC +9:00 hours
1:00 am01:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:00 am04:00 EDT / 1:30 pm13:30 IST / 3:00 am03:00 CDT / 5:00 pm17:00 KST / 1:00 am01:00 PDT
| EDT | IST | CDT | KST | PDT |
|---|---|---|---|---|
| 12am (midnight) | 9:30 am | 11pm | 1pm | 9pm |
| 1am | 10:30 am | 12am (midnight) | 2pm | 10pm |
| 2am | 11:30 am | 1am | 3pm | 11pm |
| 3am | 12:30 pm | 2am | 4pm | 12am (midnight) |
| 4am | 1:30 pm | 3am | 5pm | 1am |
| 5am | 2:30 pm | 4am | 6pm | 2am |
| 6am | 3:30 pm | 5am | 7pm | 3am |
| 7am | 4:30 pm | 6am | 8pm | 4am |
| 8am | 5:30 pm | 7am | 9pm | 5am |
| 9am | 6:30 pm | 8am | 10pm | 6am |
| 10am | 7:30 pm | 9am | 11pm | 7am |
| 11am | 8:30 pm | 10am | 12am (midnight) | 8am |
| 12pm (noon) | 9:30 pm | 11am | 1am | 9am |
| 1pm | 10:30 pm | 12pm (noon) | 2am | 10am |
| 2pm | 11:30 pm | 1pm | 3am | 11am |
| 3pm | 12:30 am | 2pm | 4am | 12pm (noon) |
| 4pm | 1:30 am | 3pm | 5am | 1pm |
| 5pm | 2:30 am | 4pm | 6am | 2pm |
| 6pm | 3:30 am | 5pm | 7am | 3pm |
| 7pm | 4:30 am | 6pm | 8am | 4pm |
| 8pm | 5:30 am | 7pm | 9am | 5pm |
| 9pm | 6:30 am | 8pm | 10am | 6pm |
| 10pm | 7:30 am | 9pm | 11am | 7pm |
| 11pm | 8:30 am | 10pm | 12pm (noon) | 8pm |
| 0:00 | 9:30 | 23:00 | 13:00 | 21:00 |
| 1:00 | 10:30 | 0:00 | 14:00 | 22:00 |
| 2:00 | 11:30 | 1:00 | 15:00 | 23:00 |
| 3:00 | 12:30 | 2:00 | 16:00 | 0:00 |
| 4:00 | 13:30 | 3:00 | 17:00 | 1:00 |
| 5:00 | 14:30 | 4:00 | 18:00 | 2:00 |
| 6:00 | 15:30 | 5:00 | 19:00 | 3:00 |
| 7:00 | 16:30 | 6:00 | 20:00 | 4:00 |
| 8:00 | 17:30 | 7:00 | 21:00 | 5:00 |
| 9:00 | 18:30 | 8:00 | 22:00 | 6:00 |
| 10:00 | 19:30 | 9:00 | 23:00 | 7:00 |
| 11:00 | 20:30 | 10:00 | 0:00 | 8:00 |
| 12:00 | 21:30 | 11:00 | 1:00 | 9:00 |
| 13:00 | 22:30 | 12:00 | 2:00 | 10:00 |
| 14:00 | 23:30 | 13:00 | 3:00 | 11:00 |
| 15:00 | 0:30 | 14:00 | 4:00 | 12:00 |
| 16:00 | 1:30 | 15:00 | 5:00 | 13:00 |
| 17:00 | 2:30 | 16:00 | 6:00 | 14:00 |
| 18:00 | 3:30 | 17:00 | 7:00 | 15:00 |
| 19:00 | 4:30 | 18:00 | 8:00 | 16:00 |
| 20:00 | 5:30 | 19:00 | 9:00 | 17:00 |
| 21:00 | 6:30 | 20:00 | 10:00 | 18:00 |
| 22:00 | 7:30 | 21:00 | 11:00 | 19:00 |
| 23:00 | 8:30 | 22:00 | 12:00 | 20:00 |
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
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
Korea Standard Time
Offset: KST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Korea (North), Korea (South)
Principal Cities: The largest city in the KST timezone is Seoul from South Korea with population about 10.349 million people. Other major cities in the area are Busan, Pyongyang, Incheon, Daegu
Daylight Saving: Korea Standard Time (KST) is not adjusted for daylight saving therefore KST 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, Korea Standard Time remains the same
KST 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 KST
- I - short form of 'India'
IANA/Olson: Reflects KST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- Asia/Pyongyang
- Asia/Seoul
- ROK
KST Abbreviation: Several time zones share KST abbreviation and it could refer to these time zones
- Korea Standard Time - UTC +9
- Pyongyang Time - UTC +8:30
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
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
- Peru Standard Time - UTC -5
- Pakistan Standard Time - UTC +5:30
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
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
