UTC to GMT to BST to Portland, ME, USA to PT to AEST to San Francisco, CA, USA to ACDT
AEST is NOT in use by many locations
AEDT (Australian Eastern Daylight Time) is used instead. Switch to AEDT time zone or select one of the cities Sydney, Melbourne, Gold Coast) for automatic timezone change.Time Difference
Universal Time Coordinated is 0 hours ahead of Greenwich Mean Time and 0 hours ahead of Greenwich Mean Time and 5 hours ahead of EST (Eastern Standard Time) and 8 hours ahead of Pacific Time and 10 hours behind Australian Eastern Standard Time and 8 hours ahead of PST (Pacific Standard Time) and 10 hours and 30 minutes behind Australian Central Daylight Time
4:30 am04:30 in UTC is 4:30 am04:30 in GMT and is 4:30 am04:30 in GMT and is 11:30 pm23:30 in Portland, ME, USA and is 8:30 pm20:30 in PT and is 2:30 pm14:30 in AEST and is 8:30 pm20:30 in San Francisco, CA, USA and is 3:00 pm15:00 in ACDT
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 BST call time
Best time for a conference call or a meeting is between 8am-5pm in UTC which corresponds to 9am-6pm in BST
UTC to Portland call time
Best time for a conference call or a meeting is between 1pm-6pm in UTC which corresponds to 8am-1pm in Portland
UTC to PT call time
Best time for a conference call or a meeting is between 4pm-6pm in UTC which corresponds to 8am-10am in PT
UTC to AEST call time
Best time for a conference call or a meeting is between 8am-10am in UTC which corresponds to 6pm-8pm in AEST
UTC to San Francisco call time
Best time for a conference call or a meeting is between 4pm-6pm in UTC which corresponds to 8am-10am in San Francisco
UTC to ACDT call time
Best time for a conference call or a meeting is between 7:30am-9:30am in UTC which corresponds to 6pm-8pm in ACDT
4:30 am04:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
4:30 am04:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
4:30 am04:30 Greenwich Mean Time (GMT). Offset UTC 0:00 hours
11:30 pm23:30 EST (Eastern Standard Time) (Portland, ME, USA). Offset UTC -5:00 hours
8:30 pm20:30 Pacific Time (PT). Offset UTC -8:00 hours
2:30 pm14:30 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
8:30 pm20:30 PST (Pacific Standard Time) (San Francisco, CA, USA). Offset UTC -8:00 hours
3:00 pm15:00 Australian Central Daylight Time (ACDT). Offset UTC +10:30 hours
4:30 am04:30 UTC / 4:30 am04:30 GMT / 4:30 am04:30 GMT / 11:30 pm23:30 Portland, ME, USA / 8:30 pm20:30 PT / 2:30 pm14:30 AEST / 8:30 pm20:30 San Francisco, CA, USA / 3:00 pm15:00 ACDT
| UTC | GMT | GMT | Portland, ME, USA | PT | AEST | San Francisco, CA, USA | ACDT |
|---|---|---|---|---|---|---|---|
| 12am (midnight) | 12am (midnight) | 12am (midnight) | 7pm | 4pm | 10am | 4pm | 10:30 am |
| 1am | 1am | 1am | 8pm | 5pm | 11am | 5pm | 11:30 am |
| 2am | 2am | 2am | 9pm | 6pm | 12pm (noon) | 6pm | 12:30 pm |
| 3am | 3am | 3am | 10pm | 7pm | 1pm | 7pm | 1:30 pm |
| 4am | 4am | 4am | 11pm | 8pm | 2pm | 8pm | 2:30 pm |
| 5am | 5am | 5am | 12am (midnight) | 9pm | 3pm | 9pm | 3:30 pm |
| 6am | 6am | 6am | 1am | 10pm | 4pm | 10pm | 4:30 pm |
| 7am | 7am | 7am | 2am | 11pm | 5pm | 11pm | 5:30 pm |
| 8am | 8am | 8am | 3am | 12am (midnight) | 6pm | 12am (midnight) | 6:30 pm |
| 9am | 9am | 9am | 4am | 1am | 7pm | 1am | 7:30 pm |
| 10am | 10am | 10am | 5am | 2am | 8pm | 2am | 8:30 pm |
| 11am | 11am | 11am | 6am | 3am | 9pm | 3am | 9:30 pm |
| 12pm (noon) | 12pm (noon) | 12pm (noon) | 7am | 4am | 10pm | 4am | 10:30 pm |
| 1pm | 1pm | 1pm | 8am | 5am | 11pm | 5am | 11:30 pm |
| 2pm | 2pm | 2pm | 9am | 6am | 12am (midnight) | 6am | 12:30 am |
| 3pm | 3pm | 3pm | 10am | 7am | 1am | 7am | 1:30 am |
| 4pm | 4pm | 4pm | 11am | 8am | 2am | 8am | 2:30 am |
| 5pm | 5pm | 5pm | 12pm (noon) | 9am | 3am | 9am | 3:30 am |
| 6pm | 6pm | 6pm | 1pm | 10am | 4am | 10am | 4:30 am |
| 7pm | 7pm | 7pm | 2pm | 11am | 5am | 11am | 5:30 am |
| 8pm | 8pm | 8pm | 3pm | 12pm (noon) | 6am | 12pm (noon) | 6:30 am |
| 9pm | 9pm | 9pm | 4pm | 1pm | 7am | 1pm | 7:30 am |
| 10pm | 10pm | 10pm | 5pm | 2pm | 8am | 2pm | 8:30 am |
| 11pm | 11pm | 11pm | 6pm | 3pm | 9am | 3pm | 9:30 am |
| 0:00 | 0:00 | 0:00 | 19:00 | 16:00 | 10:00 | 16:00 | 10:30 |
| 1:00 | 1:00 | 1:00 | 20:00 | 17:00 | 11:00 | 17:00 | 11:30 |
| 2:00 | 2:00 | 2:00 | 21:00 | 18:00 | 12:00 | 18:00 | 12:30 |
| 3:00 | 3:00 | 3:00 | 22:00 | 19:00 | 13:00 | 19:00 | 13:30 |
| 4:00 | 4:00 | 4:00 | 23:00 | 20:00 | 14:00 | 20:00 | 14:30 |
| 5:00 | 5:00 | 5:00 | 0:00 | 21:00 | 15:00 | 21:00 | 15:30 |
| 6:00 | 6:00 | 6:00 | 1:00 | 22:00 | 16:00 | 22:00 | 16:30 |
| 7:00 | 7:00 | 7:00 | 2:00 | 23:00 | 17:00 | 23:00 | 17:30 |
| 8:00 | 8:00 | 8:00 | 3:00 | 0:00 | 18:00 | 0:00 | 18:30 |
| 9:00 | 9:00 | 9:00 | 4:00 | 1:00 | 19:00 | 1:00 | 19:30 |
| 10:00 | 10:00 | 10:00 | 5:00 | 2:00 | 20:00 | 2:00 | 20:30 |
| 11:00 | 11:00 | 11:00 | 6:00 | 3:00 | 21:00 | 3:00 | 21:30 |
| 12:00 | 12:00 | 12:00 | 7:00 | 4:00 | 22:00 | 4:00 | 22:30 |
| 13:00 | 13:00 | 13:00 | 8:00 | 5:00 | 23:00 | 5:00 | 23:30 |
| 14:00 | 14:00 | 14:00 | 9:00 | 6:00 | 0:00 | 6:00 | 0:30 |
| 15:00 | 15:00 | 15:00 | 10:00 | 7:00 | 1:00 | 7:00 | 1:30 |
| 16:00 | 16:00 | 16:00 | 11:00 | 8:00 | 2:00 | 8:00 | 2:30 |
| 17:00 | 17:00 | 17:00 | 12:00 | 9:00 | 3:00 | 9:00 | 3:30 |
| 18:00 | 18:00 | 18:00 | 13:00 | 10:00 | 4:00 | 10:00 | 4:30 |
| 19:00 | 19:00 | 19:00 | 14:00 | 11:00 | 5:00 | 11:00 | 5:30 |
| 20:00 | 20:00 | 20:00 | 15:00 | 12:00 | 6:00 | 12:00 | 6:30 |
| 21:00 | 21:00 | 21:00 | 16:00 | 13:00 | 7:00 | 13:00 | 7:30 |
| 22:00 | 22:00 | 22:00 | 17:00 | 14:00 | 8:00 | 14:00 | 8:30 |
| 23:00 | 23:00 | 23:00 | 18:00 | 15:00 | 9:00 | 15:00 | 9:30 |
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
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 - UTC +1
- GMT+06:00 - UTC +6
- GMT-01:00 - UTC -1
- 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
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
Portland Information
Time Zone
EDT - Eastern Daylight Time
-4:00 hours during Eastern Daylight Time.
Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 1 hour to Sunday, March 10, 2024, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 1 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.
Portland Facts
Pacific Time
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.
Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.
Countries: It is used in following countries: Canada, Mexico, United States.
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
PT representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight hour and zero minutes time differences to the west of the zero meridian.
- Uniform - Military abbreviation for PT
- U - short form of 'Uniform'
- Pacific Time - UTC -8
- Palau Time - UTC +9
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone
Australian Eastern Standard Time
Offset: AEST is 10 hours ahead Greenwich Mean Time (GMT) and is used in Australia
Countries: It is used in following countries: Australia
Principal Cities: The largest city in the AEST timezone is Sydney from Australia with population about 4.627 million people. Other major cities in the area are Melbourne, Brisbane, Gold Coast, Canberra
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 Australian Eastern Daylight Time (AEDT).
End: Australian Eastern Standard Time (AEST) has ended on Sunday, October 6, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, October 6, 2024, 3:00 am local daylight time instead. Standard time ends annually the on first Sunday of October.
Start: Australian Eastern Standard Time (AEST) starts on Sunday, April 6, 2025 at 3:00 am local time and clocks are set one hour back to Sunday, April 6, 2025, 2:00 am. Standard time starts annually the on first Sunday of April.
Australian Eastern Standard Time (AEST) is used in Queensland, Victoria, Tasmania, New South Wales (except Broken Hill), Australian Capital Territory and in folling major cities Brisbane, Sydney, Melbourne, Hobart, Canberra
Only part of Australia observe daylight saving. It is used in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, Western Australia or the Northern Territory.
AEST representations, usage and related time zones
- +10 - basic short
- +1000 - basic
- +10:00 - extended
- +1000 - sign character (+) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates ten hour and zero minutes time differences to the east of the zero meridian.
- Kilo - Military abbreviation for AEST
- K - short form of 'Kilo'
- Antarctica/Macquarie
- Australia/ACT
- Australia/Brisbane
- Australia/Canberra
- Australia/Currie
- Australia/Hobart
- Australia/Lindeman
- Australia/Melbourne
- Australia/NSW
- Australia/Queensland
- Australia/Sydney
- Australia/Tasmania
- Australia/Victoria
- AEST - Australian Eastern Standard Time
- CHUT - Chuuk Time
- ChST - Chamorro Standard Time
- K - Kilo Time Zone
- KDT - Korea Daylight Time
- PGT - Papua New Guinea Time
- VLAT - Vladivostok Time
- YAKST - Yakutsk Summer Time
- YAPT - Yap Time
San Francisco Information
Time Zone
HNP - Heure Normale du Pacifique
-8:00 hours during Heure Normale du Pacifique.
Sunday, March 10, 2024 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 0 hour to Sunday, March 10, 2024, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Sunday, November 3, 2024 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 0 hour to Sunday, November 3, 2024, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.
San Francisco Facts
Australian Central Daylight Time
Offset: ACDT is 10 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia
Countries: It is used in following countries: Australia
Principal Cities: The largest city in the ACDT timezone is Adelaide from Australia with population about 1.225 million people. Other major cities in the area are Adelaide Hills, Mount Gambier, Morphett Vale, Prospect
Daylight Saving: Australian Central Daylight Time (ACDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Australian Central Standard Time (ACST).
Start: Australian Central Daylight Time (ACDT) started on Sunday, October 6, 2024 at 2:00 am local time and clocks were set one hour forward to Sunday, October 6, 2024, 3:00 am. Daylight saving starts annually the on first Sunday of October
End: Australian Central Daylight Time (ACDT) ends on Sunday, April 6, 2025 at 3:00 am local time and clocks are set one hour back to Sunday, April 6, 2025, 2:00 am local standard time instead. Daylight saving ends annually the on first Sunday of April
ACDT representations, usage and related time zones
- +1030 - basic
- +10:30 - extended
- +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates ten hour and thirty minutes time differences to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/South
- Australia/Yancowinna
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time