PST to AEST to AST
Time Difference
Pacific Daylight Time is 17 hours behind Australian Eastern Standard Time and 4 hours behind Atlantic Daylight Time
12:00 pm12:00 in PDT is 5:00 am05:00 in AEST and is 4:00 pm16:00 in ADT
PST to AEST call time
Best time for a conference call or a meeting is between 4am-6am in PST which corresponds to 10pm-12pm in AEST
PST to AST call time
Best time for a conference call or a meeting is between 8am-2pm in PST which corresponds to 12pm-6pm in AST
12:00 pm12:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
5:00 am05:00 Australian Eastern Standard Time (AEST). Offset UTC +10:00 hours
4:00 pm16:00 Atlantic Daylight Time (ADT). Offset UTC -3:00 hours
12:00 pm12:00 PDT / 5:00 am05:00 AEST / 4:00 pm16:00 ADT
| PDT | AEST | ADT |
|---|---|---|
| 12am (midnight) | 5pm | 4am |
| 1am | 6pm | 5am |
| 2am | 7pm | 6am |
| 3am | 8pm | 7am |
| 4am | 9pm | 8am |
| 5am | 10pm | 9am |
| 6am | 11pm | 10am |
| 7am | 12am (midnight) | 11am |
| 8am | 1am | 12pm (noon) |
| 9am | 2am | 1pm |
| 10am | 3am | 2pm |
| 11am | 4am | 3pm |
| 12pm (noon) | 5am | 4pm |
| 1pm | 6am | 5pm |
| 2pm | 7am | 6pm |
| 3pm | 8am | 7pm |
| 4pm | 9am | 8pm |
| 5pm | 10am | 9pm |
| 6pm | 11am | 10pm |
| 7pm | 12pm (noon) | 11pm |
| 8pm | 1pm | 12am (midnight) |
| 9pm | 2pm | 1am |
| 10pm | 3pm | 2am |
| 11pm | 4pm | 3am |
| 0:00 | 17:00 | 4:00 |
| 1:00 | 18:00 | 5:00 |
| 2:00 | 19:00 | 6:00 |
| 3:00 | 20:00 | 7:00 |
| 4:00 | 21:00 | 8:00 |
| 5:00 | 22:00 | 9:00 |
| 6:00 | 23:00 | 10:00 |
| 7:00 | 0:00 | 11:00 |
| 8:00 | 1:00 | 12:00 |
| 9:00 | 2:00 | 13:00 |
| 10:00 | 3:00 | 14:00 |
| 11:00 | 4:00 | 15:00 |
| 12:00 | 5:00 | 16:00 |
| 13:00 | 6:00 | 17:00 |
| 14:00 | 7:00 | 18:00 |
| 15:00 | 8:00 | 19:00 |
| 16:00 | 9:00 | 20:00 |
| 17:00 | 10:00 | 21:00 |
| 18:00 | 11:00 | 22:00 |
| 19:00 | 12:00 | 23:00 |
| 20:00 | 13:00 | 0:00 |
| 21:00 | 14:00 | 1:00 |
| 22:00 | 15:00 | 2:00 |
| 23:00 | 16:00 | 3:00 |
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America
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
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 Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
PST 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 PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- Peru Standard Time - UTC -5
- 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 timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Australian Eastern Daylight Time (AEDT).
Start: Australian Eastern Standard Time (AEST) started on Sunday, April 6, 2025 at 3:00 am local time and clocks were set one hour back to Sunday, April 6, 2025, 2:00 am. Standard time starts annually the on first Sunday of April.
End: Australian Eastern Standard Time (AEST) ends on Sunday, October 5, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, October 5, 2025, 3:00 am local daylight time instead. Standard time starts annually the on first Sunday of October.
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
Atlantic Standard Time
Offset: AST is 4 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Antigua & Barbuda, Anguilla, Aruba, Barbados, St Barthelemy, Bermuda, Caribbean NL, Canada, Curaçao, Dominica, Dominican Republic, Grenada, Greenland, Guadeloupe, St Kitts & Nevis, St Lucia, St Martin (French), Martinique, Montserrat, Puerto Rico, St Maarten (Dutch), Trinidad & Tobago, St Vincent, Virgin Islands (UK), Virgin Islands (US)
Principal Cities: The largest city in the AST timezone is Santo Domingo from Dominican Republic with population about 2.202 million people. Other major cities in the area are Santiago de los Caballeros, Santo Domingo Oeste, San Juan, Halifax
French: HNA - Heure Normale de l'Atlantique
Spanish: AST - Tiempo Estándar del Atlántico
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 Atlantic Daylight Time (ADT).
End: Atlantic Standard Time (AST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Atlantic Standard Time (AST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
AST representations, usage and related time zones
- -04 - basic short
- -0400 - basic
- -04:00 - extended
- -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four hour and zero minutes time differences to the west of the zero meridian.
- Quebec - Military abbreviation for AST
- Q - short form of 'Quebec'
- America/Anguilla
- America/Antigua
- America/Aruba
- America/Barbados
- America/Blanc-Sablon
- America/Curacao
- America/Dominica
- America/Glace_Bay
- America/Goose_Bay
- America/Grenada
- America/Guadeloupe
- America/Halifax
- America/Kralendijk
- America/Lower_Princes
- America/Marigot
- America/Martinique
- America/Moncton
- America/Montserrat
- America/Port_of_Spain
- America/Puerto_Rico
- America/Santo_Domingo
- America/St_Barthelemy
- America/St_Kitts
- America/St_Lucia
- America/St_Thomas
- America/St_Vincent
- America/Thule
- America/Tortola
- America/Virgin
- Atlantic/Bermuda
- Canada/Atlantic
- Atlantic Standard Time - UTC -4
- Arabia Standard Time - UTC +3
- Azerbaijan Standard Time - UTC +4
- Argentina Standard Time - UTC -3
- Azores Summer Time - UTC +0
- Apia Standard Time - UTC +13
- AST - Atlantic Standard Time
- EDT - Eastern Daylight Time
- AMT - Amazon Time
- BOT - Bolivia Time
- CDT - Cuba Daylight Time
- CLT - Chile Standard Time
- FKT - Falkland Island Time
- GYT - Guyana Time
- HLV - Hora Legal de Venezuela
- PYT - Paraguay Time
- Q - Quebec Time Zone
- VET - Venezuelan Standard Time