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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
CEST
Central European Summer Time
Time Difference
India Standard Time is 9 hours and 30 minutes ahead of Eastern Daylight Time and 10 hours and 30 minutes ahead of Central Daylight Time and 3 hours and 30 minutes ahead of Central European Summer Time
10:00 am10:00 in IST is 12:30 am00:30 in EDT and is 11:30 pm23:30 in CDT and is 6:30 am06:30 in CEST
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 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 CEST call time
Best time for a conference call or a meeting is between 11:30am-6pm in IST which corresponds to 8am-2:30pm in CEST
10:00 am10:00 India Standard Time (IST). Offset UTC +5:30 hours
12:30 am00:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
11:30 pm23:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
6:30 am06:30 Central European Summer Time (CEST). Offset UTC +2:00 hours
10:00 am10:00 IST / 12:30 am00:30 EDT / 11:30 pm23:30 CDT / 6:30 am06:30 CEST
| IST | EDT | CDT | CEST |
|---|---|---|---|
| 12am (midnight) | 2:30 pm | 1:30 pm | 8:30 pm |
| 1am | 3:30 pm | 2:30 pm | 9:30 pm |
| 2am | 4:30 pm | 3:30 pm | 10:30 pm |
| 3am | 5:30 pm | 4:30 pm | 11:30 pm |
| 4am | 6:30 pm | 5:30 pm | 12:30 am |
| 5am | 7:30 pm | 6:30 pm | 1:30 am |
| 6am | 8:30 pm | 7:30 pm | 2:30 am |
| 7am | 9:30 pm | 8:30 pm | 3:30 am |
| 8am | 10:30 pm | 9:30 pm | 4:30 am |
| 9am | 11:30 pm | 10:30 pm | 5:30 am |
| 10am | 12:30 am | 11:30 pm | 6:30 am |
| 11am | 1:30 am | 12:30 am | 7:30 am |
| 12pm (noon) | 2:30 am | 1:30 am | 8:30 am |
| 1pm | 3:30 am | 2:30 am | 9:30 am |
| 2pm | 4:30 am | 3:30 am | 10:30 am |
| 3pm | 5:30 am | 4:30 am | 11:30 am |
| 4pm | 6:30 am | 5:30 am | 12:30 pm |
| 5pm | 7:30 am | 6:30 am | 1:30 pm |
| 6pm | 8:30 am | 7:30 am | 2:30 pm |
| 7pm | 9:30 am | 8:30 am | 3:30 pm |
| 8pm | 10:30 am | 9:30 am | 4:30 pm |
| 9pm | 11:30 am | 10:30 am | 5:30 pm |
| 10pm | 12:30 pm | 11:30 am | 6:30 pm |
| 11pm | 1:30 pm | 12:30 pm | 7:30 pm |
| 0:00 | 14:30 | 13:30 | 20:30 |
| 1:00 | 15:30 | 14:30 | 21:30 |
| 2:00 | 16:30 | 15:30 | 22:30 |
| 3:00 | 17:30 | 16:30 | 23:30 |
| 4:00 | 18:30 | 17:30 | 0:30 |
| 5:00 | 19:30 | 18:30 | 1:30 |
| 6:00 | 20:30 | 19:30 | 2:30 |
| 7:00 | 21:30 | 20:30 | 3:30 |
| 8:00 | 22:30 | 21:30 | 4:30 |
| 9:00 | 23:30 | 22:30 | 5:30 |
| 10:00 | 0:30 | 23:30 | 6:30 |
| 11:00 | 1:30 | 0:30 | 7:30 |
| 12:00 | 2:30 | 1:30 | 8:30 |
| 13:00 | 3:30 | 2:30 | 9:30 |
| 14:00 | 4:30 | 3:30 | 10:30 |
| 15:00 | 5:30 | 4:30 | 11:30 |
| 16:00 | 6:30 | 5:30 | 12:30 |
| 17:00 | 7:30 | 6:30 | 13:30 |
| 18:00 | 8:30 | 7:30 | 14:30 |
| 19:00 | 9:30 | 8:30 | 15:30 |
| 20:00 | 10:30 | 9:30 | 16:30 |
| 21:00 | 11:30 | 10:30 | 17:30 |
| 22:00 | 12:30 | 11:30 | 18:30 |
| 23:00 | 13:30 | 12:30 | 19:30 |
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
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
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
Central European Summer Time
Offset: CEST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Vatican City
Principal Cities: The largest city in the CEST timezone is Berlin from Germany with population about 3.426 million people. Other major cities in the area are Madrid, Rome, Paris, Budapest
German: MESZ - Mitteleuropäische Sommerzeit
Daylight Saving: Central European Summer Time (CEST) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Central European Time (CET).
Start: Central European Summer Time (CEST) started on Sunday, March 31, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 31, 2024, 3:00 am. Daylight saving starts annually the on last Sunday of March
End: Central European Summer Time (CEST) ends on Sunday, October 27, 2024 at 3:00 am local time and clocks are set one hour back to Sunday, October 27, 2024, 2:00 am local standard time instead. Daylight saving ends annually the on last Sunday of October
CEST representations, usage and related time zones
W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- +02 - basic short
- +0200 - basic
- +02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
- +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates two 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
- Bravo - Military abbreviation for CEST
- B - short form of 'Bravo'
IANA/Olson: Reflects CEST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
- Africa/Ceuta
- Arctic/Longyearbyen
- Atlantic/Jan_Mayen
- CET
- Europe/Amsterdam
- Europe/Andorra
- Europe/Belgrade
- Europe/Berlin
- Europe/Bratislava
- Europe/Brussels
- Europe/Budapest
- Europe/Busingen
- Europe/Copenhagen
- Europe/Gibraltar
- Europe/Ljubljana
- Europe/Luxembourg
- Europe/Madrid
- Europe/Malta
- Europe/Monaco
- Europe/Oslo
- Europe/Paris
- Europe/Podgorica
- Europe/Prague
- Europe/Rome
- Europe/San_Marino
- Europe/Sarajevo
- Europe/Skopje
- Europe/Stockholm
- Europe/Tirane
- Europe/Vaduz
- Europe/Vatican
- Europe/Vienna
- Europe/Warsaw
- Europe/Zagreb
- Europe/Zurich
- Poland
Time zones with the GMT +2 offset:
- CEST - Central European Summer Time
- EET - Eastern European Time
- MESZ - Mitteleuropäische Sommerzeit
- B - Bravo Time Zone
- CAT - Central Africa Time
- IST - Israel Standard Time
- SAST - South Africa Standard Time
- WAST - West Africa Summer Time
EST to IST GMT to EST PST to EST EST to GMT PST to GMT
