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AMT/AMST

Amazon Time

UTC−4

12am

3am

6am

9am

12pm

3pm

6pm

9pm

AMST is not used on this date.

This converter uses AMT (UTC−4), as in Cuiaba.

Keep AMST (UTC−3)

PDT/PST

Pacific Daylight Time

UTC−7

12am

3am

6am

9am

12pm

3pm

6pm

9pm

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

Use PST all year (UTC−8)

Quick answers

Selected conversion

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

AMT is 3 hours ahead of PDT.

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

These examples always use AMST (UTC-3) and PST (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

AMST is 5 hours ahead of PST.

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 AMST to PT. For daylight-time examples, use AMT to PDT.

How the time difference changes

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

For most of the year, working hours of 9:00 am to 5:00 pm in AMT correspond to 6:00 am to 2:00 pm in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in AMT correspond to 5:00 am to 1:00 pm in PST.For most of the year, working hours of 09:00 to 17:00 in AMT correspond to 06:00 to 14:00 in PDT. At other times of the year, working hours of 09:00 to 17:00 in AMT correspond to 05:00 to 13:00 in PST.

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

Time Difference

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

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

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

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

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
AMT	PDT
	9:00pm previous day
	10:00pm previous day
	11:00pm previous day
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	21:00 previous day
	22:00 previous day
	23:00 previous day
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Amazon Summer Time

Offset: AMST is 3 hours behind Greenwich Mean Time (GMT).

AMST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

-03 - basic short
-0300 - basic
-03:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

-0300 - sign character (-) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the west of the zero meridian.

Military/NATO: Used by the U.S. military, Chinese military and others

Papa - Military abbreviation for AMST
P - short form of 'Papa'

AMST Abbreviation: Several time zones share AMST abbreviation and it could refer to these time zones

Armenia Summer Time - UTC +5
Amazon Summer Time - UTC -3

Time zones with the GMT -3 offset:

ADT - Atlantic Daylight Time
PMT - Pierre & Miquelon Standard Time
PMST - Pierre & Miquelon Standard Time
AMST - Amazon Summer Time
ART - Argentina Time
BRT - Brasília time
CLST - Chile Summer Time
FKST - Falkland Islands Summer Time
GFT - French Guiana Time
P - Papa Time Zone
PYST - Paraguay Summer Time
SRT - Suriname Time
UYT - Uruguay Time

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).
Open the world time zone map © OpenStreetMap

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).

End: 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.

Start: 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