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PDT/PST
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Pacific Time is on daylight saving time: PDT (UTC−7) until Sun, Nov 1.
AMT
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Quick answers

Selected conversion

5:00 am05:00 PDT (UTC-7), Oct 12, 2026 = 8:00 am08:00 AMT (UTC-4), Oct 12, 2026

PDT is 3 hours behind AMT.

PST (US winter time, UTC-8) and AMT examples

These examples always use PST (UTC-8) and AMT (UTC-4). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

PST is 4 hours behind AMT.

PST is US Pacific winter time (early November to mid-March). The rest of the year Los Angeles uses PDT (UTC-7), one hour later. For Pacific Time that follows daylight saving time, use PT to AMT. For daylight-time examples, use PDT to AMT.

How the time difference changes

For most of the year, PDT is 3 hours behind AMT. From Nov 1, 2026 to Mar 14, 2027, PST is 4 hours behind AMT.

For most of the year, working hours of 9:00 am to 5:00 pm in PDT correspond to 12:00 pm to 8:00 pm in AMT. At other times of the year, working hours of 9:00 am to 5:00 pm in PST correspond to 1:00 pm to 9:00 pm in AMT.For most of the year, working hours of 09:00 to 17:00 in PDT correspond to 12:00 to 20:00 in AMT. At other times of the year, working hours of 09:00 to 17:00 in PST correspond to 13:00 to 21:00 in AMT.

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

Time Difference

Pacific Daylight Time is 3 hours behind Amazon Time.
5:00 am05:00 in PDT is 8:00 am08:00 in AMT

PDT to AMT call time
Best time for a conference call or a meeting is between 9am-2pm09:00-14:00 in PDT which corresponds to 12pm-5pm12:00-17:00 in AMT

5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
8:00 am08:00 Amazon Time (AMT). Offset UTC -4:00 hours

5:00 am05:00 PDT / 8:00 am08:00 AMT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
PDTAMT
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Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT).

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 3.821 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

Map of the areas on Pacific Standard Time (PST)
PST part of the year

Today the shaded areas are on UTC−7 (PDT).

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).

123456789101112End: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See upcoming clock changes worldwide.

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

Amazon Time

Offset: AMT is 4 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Brazil

Principal Cities: The largest city in the AMT time zone is Manaus in Brazil, with about 2.22 million people. Other major cities in this time zone include Itacoatiara, Manacapuru, Parintins, Coari.

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

AMT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates an offset of four hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Quebec - Military abbreviation for AMT
  • Q - short form of 'Quebec'
AMT Abbreviation: Several time zones share AMT abbreviation and it could refer to these time zones
  • Armenia Time - UTC +4
  • Amazon Time - UTC -4
Time zones with the GMT -4 offset:
  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time