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.
PDT/PST
Pacific Daylight Time
GMT -7
PST automatically adjusted to PDT time zone, that is in use

Time Difference

Australian Central Standard Time is 16 hours and 30 minutes ahead of Pacific Daylight Time
11:30 pm23:30 in ACST is 7:00 am07:00 in PDT

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

11:30 pm23:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
7:00 am07:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

11:30 pm23:30 ACST / 7:00 am07:00 PDT

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

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 ends annually on the same date and time. and clocks were set one hour forward on Sunday, 03 October 2021, at 2:00 (2:00 am) local time.

Start: ACST starts annually on the same date and time. and clocks are set one hour back on Sunday, 03 April 2022, 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 adjust time for one hour forward for daylight saving and observe Pacific Daylight Time (PDT).

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

Start: PST starts annually on the same date and time. and clocks are set one hour back on Sunday, 07 November 2021, at 2:00 (2:00 am) local time.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, 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
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
  • Peru Standard Time - UTC -5
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone