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CDT/CST
Central Daylight Time
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
GST
Gulf Standard Time
GMT +4
IST
India Standard Time
GMT +5:30
Time Difference
Central Daylight Time is 1 hours behind Eastern Daylight Time and 9 hours behind Gulf Standard Time and 10 hours and 30 minutes behind India Standard Time
10:30 am10:30 in CDT is 11:30 am11:30 in EDT and is 7:30 pm19:30 in GST and is 9:00 pm21:00 in IST
CST to EST call time
Best time for a conference call or a meeting is between 8am-5pm in CST which corresponds to 9am-6pm in EST
CST to GST call time
Best time for a conference call or a meeting is between 8am-10am in CST which corresponds to 6pm-8pm in GST
CST to IST call time
Best time for a conference call or a meeting is between 7am-9am in CST which corresponds to 6:30pm-8:30pm in IST
10:30 am10:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
11:30 am11:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
7:30 pm19:30 Gulf Standard Time (GST). Offset UTC +4:00 hours
9:00 pm21:00 India Standard Time (IST). Offset UTC +5:30 hours
10:30 am10:30 CDT / 11:30 am11:30 EDT / 7:30 pm19:30 GST / 9:00 pm21:00 IST
| CDT | EDT | GST | IST |
|---|---|---|---|
| 12am (midnight) | 1am | 9am | 10:30 am |
| 1am | 2am | 10am | 11:30 am |
| 2am | 3am | 11am | 12:30 pm |
| 3am | 4am | 12pm (noon) | 1:30 pm |
| 4am | 5am | 1pm | 2:30 pm |
| 5am | 6am | 2pm | 3:30 pm |
| 6am | 7am | 3pm | 4:30 pm |
| 7am | 8am | 4pm | 5:30 pm |
| 8am | 9am | 5pm | 6:30 pm |
| 9am | 10am | 6pm | 7:30 pm |
| 10am | 11am | 7pm | 8:30 pm |
| 11am | 12pm (noon) | 8pm | 9:30 pm |
| 12pm (noon) | 1pm | 9pm | 10:30 pm |
| 1pm | 2pm | 10pm | 11:30 pm |
| 2pm | 3pm | 11pm | 12:30 am |
| 3pm | 4pm | 12am (midnight) | 1:30 am |
| 4pm | 5pm | 1am | 2:30 am |
| 5pm | 6pm | 2am | 3:30 am |
| 6pm | 7pm | 3am | 4:30 am |
| 7pm | 8pm | 4am | 5:30 am |
| 8pm | 9pm | 5am | 6:30 am |
| 9pm | 10pm | 6am | 7:30 am |
| 10pm | 11pm | 7am | 8:30 am |
| 11pm | 12am (midnight) | 8am | 9:30 am |
| 0:00 | 1:00 | 9:00 | 10:30 |
| 1:00 | 2:00 | 10:00 | 11:30 |
| 2:00 | 3:00 | 11:00 | 12:30 |
| 3:00 | 4:00 | 12:00 | 13:30 |
| 4:00 | 5:00 | 13:00 | 14:30 |
| 5:00 | 6:00 | 14:00 | 15:30 |
| 6:00 | 7:00 | 15:00 | 16:30 |
| 7:00 | 8:00 | 16:00 | 17:30 |
| 8:00 | 9:00 | 17:00 | 18:30 |
| 9:00 | 10:00 | 18:00 | 19:30 |
| 10:00 | 11:00 | 19:00 | 20:30 |
| 11:00 | 12:00 | 20:00 | 21:30 |
| 12:00 | 13:00 | 21:00 | 22:30 |
| 13:00 | 14:00 | 22:00 | 23:30 |
| 14:00 | 15:00 | 23:00 | 0:30 |
| 15:00 | 16:00 | 0:00 | 1:30 |
| 16:00 | 17:00 | 1:00 | 2:30 |
| 17:00 | 18:00 | 2:00 | 3:30 |
| 18:00 | 19:00 | 3:00 | 4:30 |
| 19:00 | 20:00 | 4:00 | 5:30 |
| 20:00 | 21:00 | 5:00 | 6:30 |
| 21:00 | 22:00 | 6:00 | 7:30 |
| 22:00 | 23:00 | 7:00 | 8:30 |
| 23:00 | 0:00 | 8:00 | 9:30 |
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/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
Gulf Standard Time
Offset: GST is 4 hours ahead Greenwich Mean Time (GMT) and is used in Asia
GST 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
- Delta - Military abbreviation for GST
- D - short form of 'Delta'
Time zones with the GMT +4 offset:
- KUYT - Kuybyshev Time
- MSD - Moscow Daylight Time
- SAMT - Samara Time
- AMT - Armenia Time
- AZT - Azerbaijan Time
- D - Delta Time Zone
- GET - Georgia Standard Time
- GST - Gulf Standard Time
- MUT - Mauritius Time
- RET - Reunion Time
- SCT - Seychelles Time
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
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
