UTC to IST to GMT to CET
Time Difference
Universal Time Coordinated is 5 hours and 30 minutes behind India Standard Time and 0 hours ahead of Greenwich Mean Time and 2 hours behind Central European Summer Time
4:00 am04:00 in UTC is 9:30 am09:30 in IST and is 4:00 am04:00 in GMT and is 6:00 am06:00 in CEST
UTC to IST call time
Best time for a conference call or a meeting is between 8am-12:30pm in UTC which corresponds to 1:30pm-6pm in IST
UTC to GMT call time
Best time for a conference call or a meeting is between 8am-6pm in UTC which corresponds to 8am-6pm in GMT
UTC to CET call time
Best time for a conference call or a meeting is between 8am-5pm in UTC which corresponds to 9am-6pm in CET
4:00 am04:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
9:30 am09:30 India Standard Time (IST). Offset UTC +5:30 hours
4:00 am04:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
6:00 am06:00 Central European Summer Time (CEST). Offset UTC +2:00 hours
4:00 am04:00 UTC / 9:30 am09:30 IST / 4:00 am04:00 GMT / 6:00 am06:00 CEST
| UTC | IST | GMT | CEST |
|---|---|---|---|
| 12am (midnight) | 5:30 am | 12am (midnight) | 2am |
| 1am | 6:30 am | 1am | 3am |
| 2am | 7:30 am | 2am | 4am |
| 3am | 8:30 am | 3am | 5am |
| 4am | 9:30 am | 4am | 6am |
| 5am | 10:30 am | 5am | 7am |
| 6am | 11:30 am | 6am | 8am |
| 7am | 12:30 pm | 7am | 9am |
| 8am | 1:30 pm | 8am | 10am |
| 9am | 2:30 pm | 9am | 11am |
| 10am | 3:30 pm | 10am | 12pm (noon) |
| 11am | 4:30 pm | 11am | 1pm |
| 12pm (noon) | 5:30 pm | 12pm (noon) | 2pm |
| 1pm | 6:30 pm | 1pm | 3pm |
| 2pm | 7:30 pm | 2pm | 4pm |
| 3pm | 8:30 pm | 3pm | 5pm |
| 4pm | 9:30 pm | 4pm | 6pm |
| 5pm | 10:30 pm | 5pm | 7pm |
| 6pm | 11:30 pm | 6pm | 8pm |
| 7pm | 12:30 am | 7pm | 9pm |
| 8pm | 1:30 am | 8pm | 10pm |
| 9pm | 2:30 am | 9pm | 11pm |
| 10pm | 3:30 am | 10pm | 12am (midnight) |
| 11pm | 4:30 am | 11pm | 1am |
| 0:00 | 5:30 | 0:00 | 2:00 |
| 1:00 | 6:30 | 1:00 | 3:00 |
| 2:00 | 7:30 | 2:00 | 4:00 |
| 3:00 | 8:30 | 3:00 | 5:00 |
| 4:00 | 9:30 | 4:00 | 6:00 |
| 5:00 | 10:30 | 5:00 | 7:00 |
| 6:00 | 11:30 | 6:00 | 8:00 |
| 7:00 | 12:30 | 7:00 | 9:00 |
| 8:00 | 13:30 | 8:00 | 10:00 |
| 9:00 | 14:30 | 9:00 | 11:00 |
| 10:00 | 15:30 | 10:00 | 12:00 |
| 11:00 | 16:30 | 11:00 | 13:00 |
| 12:00 | 17:30 | 12:00 | 14:00 |
| 13:00 | 18:30 | 13:00 | 15:00 |
| 14:00 | 19:30 | 14:00 | 16:00 |
| 15:00 | 20:30 | 15:00 | 17:00 |
| 16:00 | 21:30 | 16:00 | 18:00 |
| 17:00 | 22:30 | 17:00 | 19:00 |
| 18:00 | 23:30 | 18:00 | 20:00 |
| 19:00 | 0:30 | 19:00 | 21:00 |
| 20:00 | 1:30 | 20:00 | 22:00 |
| 21:00 | 2:30 | 21:00 | 23:00 |
| 22:00 | 3:30 | 22:00 | 0:00 |
| 23:00 | 4:30 | 23:00 | 1:00 |
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
Greenwich Mean Time
Offset: GMT is 0 hours ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Burkina Faso, Côte d'Ivoire, Britain (UK), Guernsey, Ghana, Greenland, Gambia, Guinea, Guinea-Bissau, Ireland, Isle of Man, Iceland, Jersey, Liberia, Mali, Mauritania, St Helena, Sierra Leone, Senegal, Sao Tome & Principe, Togo
Principal Cities: The largest city in the GMT timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Abidjan, Dakar, Grand Dakar, Accra
Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.
GMT 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 GMT
- Z - short form of 'Zulu'
- Africa/Abidjan
- Africa/Accra
- Africa/Bamako
- Africa/Banjul
- Africa/Bissau
- Africa/Conakry
- Africa/Dakar
- Africa/Freetown
- Africa/Lome
- Africa/Monrovia
- Africa/Nouakchott
- Africa/Ouagadougou
- Africa/Sao_Tome
- Africa/Timbuktu
- America/Danmarkshavn
- Atlantic/Reykjavik
- Atlantic/St_Helena
- Eire
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/Greenwich
- Europe/Belfast
- Europe/Dublin
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- GMT
- GMT+0
- GMT-0
- GMT0
- Greenwich
- Iceland
- Greenwich Mean Time - UTC +0
- GMT+03:00 - UTC +3
- GMT+06:00 - UTC +6
- GMT - UTC +0
- GMT+11:00 - UTC +11
- 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
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 31, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, March 31, 2024, 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 27, 2024 at 3:00 am local time and clocks are set one hour back to Sunday, October 27, 2024, 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
- 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