Home > Time Zones > Abbreviations > AMST – Amazon Summer Time

AMST – Amazon Summer Time (Daylight Saving Time)

Time zone map of AMST
Currently observing AMST.
Areas with same time currently (UTC -3:00).
Currently observing AMST – Amazon Summer Time.
Currently has same time zone offset as AMST (UTC -3:00) but different time zone name.

Amazon Summer Time (AMST) is 3 hours behind Coordinated Universal Time (UTC). This time zone is a DST (daylight saving time) time zone and is used in: South America.

See full time zone map

Winter Time & DST

This time zone is a daylight saving/summer time zone, in the winter some places will switch to the corresponding standard time zone: AMT (Amazon Time).

Email time zone indicator: -0300

An email sent from someone in the Amazon Summer Time (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 Amazon Summer Time, as other time zones could have the same UTC offset).

Where and when is AMST observed?

South America

Brazilian states using AMST in the summer and AMT in the winter

  • Mato Grosso (some exceptions, but including Cuiabá) Show

    Exceptions: Água Boa, Alto da Boa Vista, Alto Araguaia, Alto Taquari, Araguaiana, Araguainha, Barra do Garças, Bom Jesus do Araguaia, Campinápolis, Canabrava do Norte, Canarana, Cocalinho, Confresa, General Carneiro, Luciara, Nova Nazaré, Nova Xavantina, N

  • Mato Grosso Do Sul (includes Campo Grande)

Other time zones in UTC -3:00

Some time zones exist that have the same offset as AMST, but can be found under a different name:

AMST time now


Sunday, November 29, 2015

  • AMST will be observed in Cuiabá until Feb 21, 2016 at 12:00 AM
  • UTC Offset: UTC -3:00
  • 2 hours ahead of Washington DC

Find current time and time zone by city


Other time zones named AMST

AMST – Armenia Summer Time

Example cities

Brazil – Cuiabá (Summer)

Related time zones

AMT – Amazon Time (Standard Time)

Time Zone Map with DST

Time zone map

Time Zone Map