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AEST (Australian Eastern Standard Time)
GMT +10:00 h
UTC
Universal Time Coordinated
GMT 0:00 h
PDT (Pacific Daylight Time)
GMT -7:00 h

Time Difference

AEST (Australian Eastern Standard Time) is 10 hours ahead of Universal Time Coordinated and 17 hours ahead of PDT (Pacific Daylight Time)
So 1:30 PM13:30 in Melbourne, Australia is 3:30 AM03:30 in UTC and is 8:30 PM20:30 in San Francisco, California, USA

1:30 PM13:30 AEST (Australian Eastern Standard Time) (Melbourne, Australia). Offset UTC +10:00 hours
3:30 AM03:30 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
8:30 PM20:30 PDT (Pacific Daylight Time) (San Francisco, California, USA). Offset UTC -7:00 hours

1:30 PM13:30 Melbourne, Australia / 3:30 AM03:30 UTC / 8:30 PM20:30 San Francisco, California, USA

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

AEST (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: AEST starts annually on the same date and time. and clocks were set one hour back on Sunday, April 7, 2019, at 3:00 (3:00 am) local time.

End: AEST ends annually on the same date and time. and clocks are set one hour forward on Sunday, October 6, 2019, at 2:00 (2:00 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
  • +10 - basic short
  • +1000 - basic
  • +10:00 - extended

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

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

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

Time zones with the GMT +10:00 h offset:

  • 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
  • +10 -


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 -


PDT (Pacific Daylight Time)

Offset: PDT is 7 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 PDT 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: Pacific Daylight Time (PDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Pacific Standard Time (PST).

Start: Pacific Daylight Time (PDT) starts annually on the same date and time. and clocks were set one hour forward on Sunday, March 10, 2019, at 2:00 (2:00 am) local time.

End: Pacific Daylight Time (PDT) ends annually on the same date and time. and clocks are set one hour back on Sunday, November 3, 2019, at 2:00 (2:00 am) local time.

French: HAP - Heure Avancée du Pacifique

Spanish: 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
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven 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
  • Tango - Military abbreviation for PDT
  • T - short form of 'Tango'

IANA/Olson: Reflects PDT 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

Time zones with the GMT -7:00 h offset:

  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • T - Tango Time Zone