CET to UTC to IST to CST
Time Difference
Central European Summer Time is 2 hours ahead of Universal Time Coordinated and 3 hours and 30 minutes behind India Standard Time and 7 hours ahead of Central Daylight Time
10:00 am10:00 in CEST is 8:00 am08:00 in UTC and is 1:30 pm13:30 in IST and is 3:00 am03:00 in CDT
CET to UTC call time
Best time for a conference call or a meeting is between 9am-6pm in CET which corresponds to 8am-5pm in UTC
CET to IST call time
Best time for a conference call or a meeting is between 8am-1:30pm in CET which corresponds to 12:30pm-6pm in IST
CET to CST call time
Best time for a conference call or a meeting is between 3pm-6pm in CET which corresponds to 8am-11am in CST
10:00 am10:00 Central European Summer Time (CEST). Offset UTC +2:00 hours
8:00 am08:00 Universal Time Coordinated (UTC). Offset UTC 0:00 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
10:00 am10:00 CEST / 8:00 am08:00 UTC / 1:30 pm13:30 IST / 3:00 am03:00 CDT
| CEST | UTC | IST | CDT |
|---|---|---|---|
| 12am (midnight) | 10pm | 3:30 am | 5pm |
| 1am | 11pm | 4:30 am | 6pm |
| 2am | 12am (midnight) | 5:30 am | 7pm |
| 3am | 1am | 6:30 am | 8pm |
| 4am | 2am | 7:30 am | 9pm |
| 5am | 3am | 8:30 am | 10pm |
| 6am | 4am | 9:30 am | 11pm |
| 7am | 5am | 10:30 am | 12am (midnight) |
| 8am | 6am | 11:30 am | 1am |
| 9am | 7am | 12:30 pm | 2am |
| 10am | 8am | 1:30 pm | 3am |
| 11am | 9am | 2:30 pm | 4am |
| 12pm (noon) | 10am | 3:30 pm | 5am |
| 1pm | 11am | 4:30 pm | 6am |
| 2pm | 12pm (noon) | 5:30 pm | 7am |
| 3pm | 1pm | 6:30 pm | 8am |
| 4pm | 2pm | 7:30 pm | 9am |
| 5pm | 3pm | 8:30 pm | 10am |
| 6pm | 4pm | 9:30 pm | 11am |
| 7pm | 5pm | 10:30 pm | 12pm (noon) |
| 8pm | 6pm | 11:30 pm | 1pm |
| 9pm | 7pm | 12:30 am | 2pm |
| 10pm | 8pm | 1:30 am | 3pm |
| 11pm | 9pm | 2:30 am | 4pm |
| 0:00 | 22:00 | 3:30 | 17:00 |
| 1:00 | 23:00 | 4:30 | 18:00 |
| 2:00 | 0:00 | 5:30 | 19:00 |
| 3:00 | 1:00 | 6:30 | 20:00 |
| 4:00 | 2:00 | 7:30 | 21:00 |
| 5:00 | 3:00 | 8:30 | 22:00 |
| 6:00 | 4:00 | 9:30 | 23:00 |
| 7:00 | 5:00 | 10:30 | 0:00 |
| 8:00 | 6:00 | 11:30 | 1:00 |
| 9:00 | 7:00 | 12:30 | 2:00 |
| 10:00 | 8:00 | 13:30 | 3:00 |
| 11:00 | 9:00 | 14:30 | 4:00 |
| 12:00 | 10:00 | 15:30 | 5:00 |
| 13:00 | 11:00 | 16:30 | 6:00 |
| 14:00 | 12:00 | 17:30 | 7:00 |
| 15:00 | 13:00 | 18:30 | 8:00 |
| 16:00 | 14:00 | 19:30 | 9:00 |
| 17:00 | 15:00 | 20:30 | 10:00 |
| 18:00 | 16:00 | 21:30 | 11:00 |
| 19:00 | 17:00 | 22:30 | 12:00 |
| 20:00 | 18:00 | 23:30 | 13:00 |
| 21:00 | 19:00 | 0:30 | 14:00 |
| 22:00 | 20:00 | 1:30 | 15:00 |
| 23:00 | 21:00 | 2:30 | 16:00 |
Central European Time
Offset: CET is 1 hour 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, Algeria, 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, Tunisia, Vatican City
Principal Cities: The largest city in the CET timezone is Berlin from Germany with population about 3.426 million people. Other major cities in the area are Madrid, Rome, Paris, Algiers
German: MEZ - Mitteleuropäische Zeit
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 European Summer Time (CEST).
End: Central European Time (CET) has ended on Sunday, March 30, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 30, 2025, 3:00 am local daylight time instead. Standard time ends annually the on last Sunday of March.
Start: Central European Time (CET) starts on Sunday, October 26, 2025 at 3:00 am local time and clocks are set one hour back to Sunday, October 26, 2025, 2:00 am. Standard time starts annually the on last Sunday of October.
CET representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for CET
- A - short form of 'Alpha'
- Africa/Algiers
- Africa/Ceuta
- Africa/Tunis
- 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
- MET
- Poland
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
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
- Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
- +00 - basic short
- +0000 - basic
- +00:00 - extended
- +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.
- Zulu - Military abbreviation for UTC
- Z - short form of 'Zulu'
- Etc/UCT
- Etc/UTC
- Etc/Universal
- Etc/Zulu
- UCT
- UTC
- Universal
- Zulu
- 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
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
- +0530 - basic
- +05:30 - extended
- +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.
- Asia/Calcutta
- Asia/Kolkata
- 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 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 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 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
CST representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -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.
- Sierra - Military abbreviation for CST
- S - short form of 'Sierra'
- 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
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- Colombia Standard Time - UTC -5
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone