Greenwich Mean Time is 5 hours ahead of Eastern Standard Time
So 9:17 PM21:17 in GMT is 4:17 PM16:17 in EST
9:17 PM21:17 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
4:17 PM16:17 Eastern Standard Time (EST). Offset UTC -5:00 hours
9:17 PM21:17 GMT / 4:17 PM16:17 EST
British Summer Time
Offset: BST is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Britain (UK), Guernsey, Isle of Man, Jersey
Principal Cities: The largest city in the BST timezone is London from United Kingdom with population about 7.557 million people. Other major cities in the area are Birmingham, Glasgow, Liverpool, Saint Helier
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.
BST 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 BST
- A - short form of 'Alpha'
BST Abbreviation: Several time zones share BST abbreviation and it could refer to these time zones
- British Summer Time - UTC +1:00 h
- Bangladesh Standard Time - UTC +6:00 h
- Bougainville Standard Time - UTC +11:00 h
Time zones with the GMT +1:00 h offset:
- 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 - MitteleuropÃ¤ische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
- WEST -
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, 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
Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).
Start: EST starts annually the First Sunday of November at 2:00 AM local time and clocks were set one hour back on Sunday, November 6, 2016, at 2:00 (2:00 am) local time.
End: EST ends annually the Second Sunday of March at 2:00 AM local time and clocks are set one hour forward on Sunday, March 12, 2017, at 2:00 (2:00 am) local time.
French: HNE - Heure Normale de l'Est
Spanish: ET - Tiempo del Este, ET - Zona Sureste
EST 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 EST
- R - short form of 'Romeo'
Time zones with the GMT -5:00 h offset:
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo Time Zone
- CST -
- ACT -