CET to IST to ET to JST
Time Difference
Central European Summer Time is 3 hours and 30 minutes behind India Standard Time and 6 hours ahead of Eastern Daylight Time and 7 hours behind Japan Standard Time
10:00 am10:00 in CEST is 1:30 pm13:30 in IST and is 4:00 am04:00 in EDT and is 5:00 pm17:00 in JST
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 ET call time
Best time for a conference call or a meeting is between 2pm-6pm in CET which corresponds to 8am-12pm in ET
CET to JST call time
Best time for a conference call or a meeting is between 8am-10am in CET which corresponds to 4pm-6pm in JST
10:00 am10:00 Central European Summer Time (CEST). Offset UTC +2:00 hours
1:30 pm13:30 India Standard Time (IST). Offset UTC +5:30 hours
4:00 am04:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
5:00 pm17:00 Japan Standard Time (JST). Offset UTC +9:00 hours
10:00 am10:00 CEST / 1:30 pm13:30 IST / 4:00 am04:00 EDT / 5:00 pm17:00 JST
| CEST | IST | ET | JST |
|---|---|---|---|
| 12am (midnight) | 3:30 am | 6pm | 7am |
| 1am | 4:30 am | 7pm | 8am |
| 2am | 5:30 am | 8pm | 9am |
| 3am | 6:30 am | 9pm | 10am |
| 4am | 7:30 am | 10pm | 11am |
| 5am | 8:30 am | 11pm | 12pm (noon) |
| 6am | 9:30 am | 12am (midnight) | 1pm |
| 7am | 10:30 am | 1am | 2pm |
| 8am | 11:30 am | 2am | 3pm |
| 9am | 12:30 pm | 3am | 4pm |
| 10am | 1:30 pm | 4am | 5pm |
| 11am | 2:30 pm | 5am | 6pm |
| 12pm (noon) | 3:30 pm | 6am | 7pm |
| 1pm | 4:30 pm | 7am | 8pm |
| 2pm | 5:30 pm | 8am | 9pm |
| 3pm | 6:30 pm | 9am | 10pm |
| 4pm | 7:30 pm | 10am | 11pm |
| 5pm | 8:30 pm | 11am | 12am (midnight) |
| 6pm | 9:30 pm | 12pm (noon) | 1am |
| 7pm | 10:30 pm | 1pm | 2am |
| 8pm | 11:30 pm | 2pm | 3am |
| 9pm | 12:30 am | 3pm | 4am |
| 10pm | 1:30 am | 4pm | 5am |
| 11pm | 2:30 am | 5pm | 6am |
| 0:00 | 3:30 | 18:00 | 7:00 |
| 1:00 | 4:30 | 19:00 | 8:00 |
| 2:00 | 5:30 | 20:00 | 9:00 |
| 3:00 | 6:30 | 21:00 | 10:00 |
| 4:00 | 7:30 | 22:00 | 11:00 |
| 5:00 | 8:30 | 23:00 | 12:00 |
| 6:00 | 9:30 | 0:00 | 13:00 |
| 7:00 | 10:30 | 1:00 | 14:00 |
| 8:00 | 11:30 | 2:00 | 15:00 |
| 9:00 | 12:30 | 3:00 | 16:00 |
| 10:00 | 13:30 | 4:00 | 17:00 |
| 11:00 | 14:30 | 5:00 | 18:00 |
| 12:00 | 15:30 | 6:00 | 19:00 |
| 13:00 | 16:30 | 7:00 | 20:00 |
| 14:00 | 17:30 | 8:00 | 21:00 |
| 15:00 | 18:30 | 9:00 | 22:00 |
| 16:00 | 19:30 | 10:00 | 23:00 |
| 17:00 | 20:30 | 11:00 | 0:00 |
| 18:00 | 21:30 | 12:00 | 1:00 |
| 19:00 | 22:30 | 13:00 | 2:00 |
| 20:00 | 23:30 | 14:00 | 3:00 |
| 21:00 | 0:30 | 15:00 | 4:00 |
| 22:00 | 1:30 | 16:00 | 5:00 |
| 23:00 | 2:30 | 17:00 | 6:00 |
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
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
Eastern Time
Eastern Time (ET) is a general term used to describe the areas that observe either the Eastern Standard Time (EST) or Eastern Daylight Time (EDT) in the United States and Canada. ET is not static but switches between EDT and EST.
ET is also used somewhat as a de facto official time for all of the United States because it encompasses 17 U.S. states in the eastern part of the contiguous United States including the capital city Washington D.C., the most populous city New York and half of the country’s population.
In the United States nationally televised programs, evening newscasts, talent and awards shows, and any other nationally televised event that airs live on American television during prime time and on the weekends are broadcast live in the Eastern Time Zone. Major professional sports leagues MLB, NBA, NFL and NHL also provide their game times in Eastern Time, even if teams are from outside of Eastern Time.
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
Eastern Time (ET) is a general term used to describe the areas that observe either the Eastern Standard Time (EST) or Eastern Daylight Time (EDT) in the United States and Canada. ET is not static but switches between EDT and EST.
ET is also used somewhat as a de facto official time for all of the United States because it encompasses 17 U.S. states in the eastern part of the contiguous United States including the capital city Washington D.C., the most populous city New York and half of the country’s population.
In the United States nationally televised programs, evening newscasts, talent and awards shows, and any other nationally televised event that airs live on American television during prime time and on the weekends are broadcast live in the Eastern Time Zone. Major professional sports leagues MLB, NBA, NFL and NHL also provide their game times in Eastern Time, even if teams are from outside of Eastern Time.
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
ET representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -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.
- Romeo - Military abbreviation for ET
- R - short form of 'Romeo'
- Eastern Time - UTC -5
- Tiempo del Este - UTC -5
- Ecuador Time - UTC -5
- 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
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Japan
Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo
Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST 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, Japan Standard Time remains the same
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +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.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- 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