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PST (Pacific Standard Time)
GMT -8:00 h
UTC
Universal Time Coordinated
GMT 0:00 h
AEDT (Australian Eastern Daylight Time)
GMT +11:00 h

Time Difference

PST (Pacific Standard Time) is 8 hours behind of Universal Time Coordinated and 19 hours behind of AEDT (Australian Eastern Daylight Time)
So 1:30 PM13:30 in San Francisco, California, USA is 9:30 PM21:30 in UTC and is 8:30 AM08:30 in Melbourne, Australia

1:30 PM13:30 PST (Pacific Standard Time) (San Francisco, California, USA). Offset UTC -8:00 hours
9:30 PM21:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
8:30 AM08:30 AEDT (Australian Eastern Daylight Time) (Melbourne, Australia). Offset UTC +11:00 hours

1:30 PM13:30 San Francisco, California, USA / 9:30 PM21:30 UTC / 8:30 AM08:30 Melbourne, Australia

San Francisco, California, USA UTC Melbourne, Australia
12am (midnight) 8am 7pm
1am 9am 8pm
2am 10am 9pm
3am 11am 10pm
4am 12pm (noon) 11pm
5am 1pm 12am (midnight)
6am 2pm 1am
7am 3pm 2am
8am 4pm 3am
9am 5pm 4am
10am 6pm 5am
11am 7pm 6am
12pm (noon) 8pm 7am
1pm 9pm 8am
2pm 10pm 9am
3pm 11pm 10am
4pm 12am (midnight) 11am
5pm 1am 12pm (noon)
6pm 2am 1pm
7pm 3am 2pm
8pm 4am 3pm
9pm 5am 4pm
10pm 6am 5pm
11pm 7am 6pm
0:00 8:00 19:00
1:00 9:00 20:00
2:00 10:00 21:00
3:00 11:00 22:00
4:00 12:00 23:00
5:00 13:00 0:00
6:00 14:00 1:00
7:00 15:00 2:00
8:00 16:00 3:00
9:00 17:00 4:00
10:00 18:00 5:00
11:00 19:00 6:00
12:00 20:00 7:00
13:00 21:00 8:00
14:00 22:00 9:00
15:00 23:00 10:00
16:00 0:00 11:00
17:00 1:00 12:00
18:00 2:00 13:00
19:00 3:00 14:00
20:00 4:00 15:00
21:00 5:00 16:00
22:00 6:00 17:00
23:00 7:00 18:00

PST (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

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 Pacific Daylight Time (PDT).

Start: PST starts annually on the same date and time. and clocks were set one hour back on Sunday, November 4, 2018, at 2:00 (2:00 am) local time.

End: PST ends annually on the same date and time. and clocks are set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del PacĂ­fico, PT - Zona Noroeste

San Francisco, California, USA Time Zone Geo Map
San Francisco, California, USA timezone map
San Francisco, California, USA representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.

Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'

IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Dawson
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • America/Whitehorse
  • Canada/Pacific
  • Canada/Yukon
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
  • US/Pacific-New

PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones

  • Pacific Standard Time - UTC -8:00 h
  • Pitcairn Standard Time - UTC -8:00 h

Time zones with the GMT -8:00 h offset:

  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • YDT - Yukon Daylight Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone


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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.

Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for UTC
  • Z - short form of 'Zulu'

IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UTC
  • Universal
  • Zulu

Time zones with the GMT 0:00 h offset:

  • 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
  • +00 -


AEDT (Australian Eastern Daylight Time)

Offset: AEDT is 11 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 AEDT timezone is Sydney from Australia with population about 4.627 million people. Other major cities in the area are Melbourne, Canberra, Newcastle, Wollongong

Daylight Saving: Australian Eastern Daylight Time (AEDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Australian Eastern Standard Time (AEST).

Start: Australian Eastern Daylight Time (AEDT) starts annually on the same date and time. and clocks were set one hour forward on Sunday, October 7, 2018, at 2:00 (2:00 am) local time.

End: Australian Eastern Daylight Time (AEDT) ends annually on the same date and time. and clocks are set one hour back on Sunday, April 7, 2019, at 3:00 (3:00 am) local time.

Melbourne, Australia Time Zone Geo Map
Melbourne, Australia timezone map
Melbourne, Australia representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +11 - basic short
  • +1100 - basic
  • +11:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates eleven hour and zero minutes time differences to the east of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others
  • Lima - Military abbreviation for AEDT
  • L - short form of 'Lima'

IANA/Olson: Reflects AEDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/ACT
  • Australia/Canberra
  • Australia/Currie
  • Australia/Hobart
  • Australia/Melbourne
  • Australia/NSW
  • Australia/Sydney
  • Australia/Tasmania
  • Australia/Victoria

Time zones with the GMT +11:00 h offset:

  • AEDT - Australian Eastern Daylight Time
  • BST - Bougainville Standard Time
  • KOST - Kosrae Time
  • L - Lima Time Zone
  • LHDT - Lord Howe Daylight Time
  • NCT - New Caledonia Time
  • PETT - Kamchatka Time
  • PONT - Pohnpei Standard Time
  • SBT - Solomon IslandsTime
  • VLAST - Vladivostok Summer Time
  • VUT - Vanuatu Time
  • +11 -