ACST
Australian Central Standard Time
GMT +9:30
ACST is NOT in use by many locations
ACDT (Australian Central Daylight Time) is used instead. Switch to ACDT time zone or select one of the cities Adelaide, Darwin, Adelaide Hills for automatic timezone change.
PST
Pacific Standard Time
GMT -8

Time Difference

Australian Central Standard Time is 17 hours and 30 minutes ahead of Pacific Standard Time
1:30 am01:30 in ACST is 8:00 am08:00 in PST

ACST to PST call time
Best time for a conference call or a meeting is between 9:30pm-11:30pm in ACST which corresponds to 4am-6am in PST

1:30 am01:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
8:00 am08:00 Pacific Standard Time (PST). Offset UTC -8:00 hours

1:30 am01:30 ACST / 8:00 am08:00 PST

ACST PST
12am (midnight) 6:30 am
1am 7:30 am
2am 8:30 am
3am 9:30 am
4am 10:30 am
5am 11:30 am
6am 12:30 pm
7am 1:30 pm
8am 2:30 pm
9am 3:30 pm
10am 4:30 pm
11am 5:30 pm
12pm (noon) 6:30 pm
1pm 7:30 pm
2pm 8:30 pm
3pm 9:30 pm
4pm 10:30 pm
5pm 11:30 pm
6pm 12:30 am
7pm 1:30 am
8pm 2:30 am
9pm 3:30 am
10pm 4:30 am
11pm 5:30 am
0:00 6:30
1:00 7:30
2:00 8:30
3:00 9:30
4:00 10:30
5:00 11:30
6:00 12:30
7:00 13:30
8:00 14:30
9:00 15:30
10:00 16:30
11:00 17:30
12:00 18:30
13:00 19:30
14:00 20:30
15:00 21:30
16:00 22:30
17:00 23:30
18:00 0:30
19:00 1:30
20:00 2:30
21:00 3:30
22:00 4:30
23:00 5:30

Australian Central Standard Time

Offset: ACST is 9 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 ACST timezone is Adelaide from Australia with population about 1.225 million people. Other major cities in the area are Darwin, Adelaide Hills, Alice Springs, Palmerston

Daylight Saving: This is a standard timezone, however during summer some places adjust time for one hour forward for daylight saving and observe Australian Central Daylight Time (ACDT).

End: ACST ended and clocks were set one hour forward on Sunday, 04 October 2020, at 2:00 (2:00 am) local time.

Start: ACST starts and clocks are set one hour back on Sunday, 04 April 2021, at 3:00 (3:00 am) local time.

ACST Time Zone Geo Map
ACST timezone map

ACST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0930 - basic
  • +09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates nine hour and thirty minutes time differences to the east of the zero meridian.
IANA/Olson: Reflects ACST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/Darwin
  • Australia/North
  • Australia/South
  • Australia/Yancowinna

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 started and clocks were set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

End: PST ends and clocks are set one hour forward on Sunday, 14 March 2021, at 2:00 (2:00 am) local time.

French: HNP - Heure Normale du Pacifique

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

PST Time Zone Geo Map
PST timezone map

PST 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/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • 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
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • YDT - Yukon Daylight Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone