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CHAST to PST Converter

Updating current time…
CHAST
Chatham Island Standard Time
GMT +12:45
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PDT/PST
Pacific Daylight Time
GMT -7
yesterday
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST is not used on this date
This converter uses PDT (GMT -7), the offset Los Angeles uses on this date. Open the PDT converter.

Quick answers

Depending on seasonal clock changes, CHAST is 19 hours and 45 minutes ahead of PDT, CHADT is 20 hours and 45 minutes ahead of PDT, or CHADT is 21 hours and 45 minutes ahead of PST.

Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in CHAST correspond to 1:15 pm (previous day) to 9:15 pm (previous day) in PDT, working hours of 9:00 am to 5:00 pm in CHADT correspond to 12:15 pm (previous day) to 8:15 pm (previous day) in PDT, or working hours of 9:00 am to 5:00 pm in CHADT correspond to 11:15 am (previous day) to 7:15 pm (previous day) in PST.

Compare CHAST time with PST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

Chatham Island Standard Time is 19 hours and 45 minutes ahead of Pacific Daylight Time
5:00 am05:00 in CHAST is 9:15 am09:15 in PDT

CHAST to PDT call time
Best time for a conference call or a meeting is between 9am-12:45pm in CHAST which corresponds to 1:15pm-5pm in PDT (previous day)

5:00 am05:00 Chatham Island Standard Time (CHAST). Offset UTC +12:45 hours
9:15 am09:15 Pacific Daylight Time (PDT). Offset UTC -7:00 hours

5:00 am05:00 CHAST / 9:15 am09:15 PDT

CHASTPDT
12am (midnight)4:15 am
1am5:15 am
2am6:15 am
3am7:15 am
4am8:15 am
5am9:15 am
6am10:15 am
7am11:15 am
8am12:15 pm
9am1:15 pm
10am2:15 pm
11am3:15 pm
12pm (noon)4:15 pm
1pm5:15 pm
2pm6:15 pm
3pm7:15 pm
4pm8:15 pm
5pm9:15 pm
6pm10:15 pm
7pm11:15 pm
8pm12:15 am
9pm1:15 am
10pm2:15 am
11pm3:15 am
00:0004:15
01:0005:15
02:0006:15
03:0007:15
04:0008:15
05:0009:15
06:0010:15
07:0011:15
08:0012:15
09:0013:15
10:0014:15
11:0015:15
12:0016:15
13:0017:15
14:0018:15
15:0019:15
16:0020:15
17:0021:15
18:0022:15
19:0023:15
20:0000:15
21:0001:15
22:0002:15
23:0003:15

Chatham Island Standard Time

Offset: CHAST is 12 hours and 45 minutes ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: New Zealand

CHAST Time Zone Geo Map
CHAST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Chatham Island Daylight Time (CHADT).

Start: Chatham Island Standard Time (CHAST) started on Sunday, April 5, 2026 at 3:45 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:45 am. Standard time starts annually on the first Sunday of April.

End: Chatham Island Standard Time (CHAST) ends on Sunday, September 27, 2026 at 2:45 am local time and clocks are set one hour forward to Sunday, September 27, 2026, 3:45 am local daylight time instead. Standard time ends annually on the last Sunday of September.

CHAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1245 - basic
  • +12:45 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1245 - sign character (+) followed by a four digit time providing hours (12) and minutes (45) of the offset. Indicates an offset of twelve hours and forty-five minutes to the east of the zero meridian.

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.793 million people. Other major cities in this time zone include Vancouver, Tijuana, San Diego, San Jose.

French: HNP - Heure Normale du Pacifique

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

PST Time Zone Geo Map
PST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hour from 2am to 1amStart: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am. Standard time starts annually on the first Sunday of November.

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 an offset of eight hours 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
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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT