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South American time zones:

AMST – Amazon Summer Time

Current time in Cuiabá

Sunday, December 2, 2012 at 11:32:25 PM AMST

Cuiabá will stay on AMST until Midnight between Saturday, February 16, 2013 and Sunday, February 17, 2013
when clocks are moved to Saturday, February 16, 2013 at 23:00:00AMT

Find local time and time zone for a location

We recommend looking up by location name, not time zone name.

Time zone offset: UTC - 3 hours

AMST is 3 hours behind of Coordinated Universal Time (UTC)

Note that AMST is a daylight saving time/summer time zone. It is generally only used during the summer in the places listed below, during the winter AMT is used instead

Time zone abbreviation: AMST

Full name is Amazon Summer Time

Email time zone indicator: -0300

An email sent from someone in the AMST time zone will have the time zone listed as "-0300" in the headers of the email. (However, "-0300" does not have to be in AMST, as other time zones could have the same UTC offset).

For actual dates DST might be observed, look at the examples below

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Where and when is AMST observed?

Areas using AMST in the summer and AMT during the winter

Mato Grosso

Time zone maps are under development and will be available later

Example location in AMST

Cuiabá - This time zone offset is used during summer in this location

Other time zones in South America

Go directly through the links below, or see the South America time zone list

AMT - Amazon Time
ART - Argentina Time
BOT - Bolivia Time
BRST - Brasilia Summer Time
BRT - Brasília time
CLST - Chile Summer Time
CLT - Chile Standard Time
COT - Colombia Time
ECT - Ecuador Time
FKST - Falkland Islands Summer Time
FKT - Falkland Island Time
FNT - Fernando de Noronha Time
GFT - French Guiana Time
GYT - Guyana Time
PET - Peru Time
PYST - Paraguay Summer Time
PYT - Paraguay Time
SRT - Suriname Time
UYST - Uruguay Summer Time
UYT - Uruguay Time
VET - Venezuelan Standard Time