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PT/PDT
12am
3am
6am
9am
12pm
3pm
6pm
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ChST
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3am
6am
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Quick answers

Selected conversion

5:00 am05:00 PDT (UTC-7), Oct 12, 2026 = 10:00 pm22:00 ChST (UTC+10), Oct 12, 2026

PDT is 17 hours behind ChST.

How the time difference changes

For most of the year, PT is 17 hours behind ChST. From Nov 1, 2026 to Mar 14, 2027, PT is 18 hours behind ChST.

For most of the year, working hours of 9:00 am to 5:00 pm in PT correspond to 2:00 am (next day) to 10:00 am (next day) in ChST. At other times of the year, working hours of 9:00 am to 5:00 pm in PT correspond to 3:00 am (next day) to 11:00 am (next day) in ChST.For most of the year, working hours of 09:00 to 17:00 in PT correspond to 02:00 (next day) to 10:00 (next day) in ChST. At other times of the year, working hours of 09:00 to 17:00 in PT correspond to 03:00 (next day) to 11:00 (next day) in ChST.

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

Time Difference

Pacific Daylight Time is 17 hours behind Chamorro Standard Time.
5:00 am05:00 in PDT is 10:00 pm22:00 in ChST

PDT to ChST call time
Best time for a conference call or a meeting is between 4pm-5pm16:00-17:00 in PDT which corresponds to 9am-10am09:00-10:00 in ChST (next day)

5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
10:00 pm22:00 Chamorro Standard Time (ChST). Offset UTC +10:00 hours

5:00 am05:00 PDT / 10:00 pm22:00 ChST

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Pacific Time

Pacific Time (PT) is a general term used to describe the areas that observe either the Pacific Standard Time (PST) or Pacific Daylight Time (PDT) in the United States and Canada. PT also called Pacific Coast Time. PT is not static but switches between PDT and PST.

Territories observing the Pacific Time Zone are primarily in North America. It runs through the western part of Canada, the United States and the Northwestern part of Mexico.

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

Principal Cities: The largest city in the PT time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HNP - Heure Normale du Pacifique

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

PT 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 PT
  • U - short form of 'Uniform'
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

Chamorro Standard Time

Offset: ChST is 10 hours ahead of Greenwich Mean Time (GMT).

Countries using this time zone: Guam, Northern Mariana Islands

Principal Cities: The largest city in the ChST time zone is Saipan in the Northern Mariana Islands, with about 48,220 people. Other major cities in this time zone include Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Mangilao Village.

Daylight Saving: Clocks in Chamorro Standard Time (ChST) do not change for daylight saving time, so ChST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

ChST 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 an offset of ten hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Kilo - Military abbreviation for ChST
  • K - short form of 'Kilo'
IANA/Olson: Reflects ChST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Pacific/Guam
  • Pacific/Saipan
Time zones with the GMT +10 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