HDT to BST Converter
Time Difference
Hawaii Standard Time is 10 hours behind Greenwich Mean Time
10:00 am10:00 in HST is 8:00 pm20:00 in GMT
HDT to BST call time
Best time for a conference call or a meeting is between 8am-10am in HDT which corresponds to 6pm-8pm in BST
10:00 am10:00 Hawaii Standard Time (HST). Offset UTC -10:00 hours
8:00 pm20:00 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
10:00 am10:00 HST / 8:00 pm20:00 GMT
| HST | GMT |
|---|---|
| 12am (midnight) | 10am |
| 1am | 11am |
| 2am | 12pm (noon) |
| 3am | 1pm |
| 4am | 2pm |
| 5am | 3pm |
| 6am | 4pm |
| 7am | 5pm |
| 8am | 6pm |
| 9am | 7pm |
| 10am | 8pm |
| 11am | 9pm |
| 12pm (noon) | 10pm |
| 1pm | 11pm |
| 2pm | 12am (midnight) |
| 3pm | 1am |
| 4pm | 2am |
| 5pm | 3am |
| 6pm | 4am |
| 7pm | 5am |
| 8pm | 6am |
| 9pm | 7am |
| 10pm | 8am |
| 11pm | 9am |
| 0:00 | 10:00 |
| 1:00 | 11:00 |
| 2:00 | 12:00 |
| 3:00 | 13:00 |
| 4:00 | 14:00 |
| 5:00 | 15:00 |
| 6:00 | 16:00 |
| 7:00 | 17:00 |
| 8:00 | 18:00 |
| 9:00 | 19:00 |
| 10:00 | 20:00 |
| 11:00 | 21:00 |
| 12:00 | 22:00 |
| 13:00 | 23:00 |
| 14:00 | 0:00 |
| 15:00 | 1:00 |
| 16:00 | 2:00 |
| 17:00 | 3:00 |
| 18:00 | 4:00 |
| 19:00 | 5:00 |
| 20:00 | 6:00 |
| 21:00 | 7:00 |
| 22:00 | 8:00 |
| 23:00 | 9:00 |
Hawaii Daylight Time
Offset: HDT is 9 hours behind Greenwich Mean Time (GMT) and is used in Pacific
Countries: It is used in following countries: United States
HDT 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 west of the zero meridian.
- Victor - Military abbreviation for HDT
- V - short form of 'Victor'
- America/Adak
- America/Atka
- US/Aleutian
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii Daylight Time
- V - Victor Time Zone
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'
- Europe/Belfast
- Europe/Guernsey
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/London
- GB
- GB-Eire
- British Summer Time - UTC +1
- Bangladesh Standard Time - UTC +6
- Bougainville Standard Time - UTC +11
- Brasilia Standard Time - UTC -3
- 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