AMST – Amazon Summer Time (Daylight Saving Time)
South America: AMST is currently not observed because locations are on standard time and are observing AMT.
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?
Brazilian states using AMST in the summer and AMT in the winter
- Mato Grosso (some exceptions, but including Cuiabá)
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, Novo Santo Antônio, Novo São Joaquim, Pontal do Araguaia, Ponte Branca, Porto Alegre do Norte, Querência, Ribeirão Cascalheira, Ribeirãozinho, Santa Cruz do Xingu, Santa Terezinha, São Félix do Araguaia, São José do Xingu, Serra Nova Dourada, Torixoréu e Vila Rica.
- Mato Grosso Do Sul (includes Campo Grande)
Other time zones in UTC -3
Some time zones exist that have the same offset as AMST, but can be found under a different name:
- ADT – Atlantic Daylight Time
- ART – Argentina Time
- BRT – Brasília Time
- CLST – Chile Summer Time
- CLT – Chile Standard Time
- FKST – Falkland Islands Summer Time
- GFT – French Guiana Time
- P – Papa Time Zone
- PMST – Pierre & Miquelon Standard Time
- PYST – Paraguay Summer Time
- ROTT – Rothera Time
- SRT – Suriname Time
- UYT – Uruguay Time
- WARST – Western Argentine Summer Time
- WGT – West Greenland Time
Time zones by continent/region
- Central America
- Indian Ocean
- North America
- Other time standards
- South America
No locations currently on AMST
Find current time and time zone by city
Other time zones named AMST
Brazil – Cuiabá (Summer)
Related time zones
AMT – Amazon Time (Standard Time)