Time zones and time differences in Brazil
In central Europe, we use a time zone referred to as CET (Central European Time). The UTC (Universal Time Coordinated, also GMT = Greenwich Mean Time) is about an hour ahead. Every year on the last Sunday in March the time is put forward by one hour, two o'clock to three o'clock, marking the beginning of Summer Time (CEST = Central European Summer Time). At the end of the summer time, on the last Sunday of October, the time is postponed by one hour, from three o'clock to two o'clock.
We are generally a few hours ahead in Brazil, compared to Europe. There are 5 different time zones, that partially also changes their clocks for daylight saving time (from the third Sunday in February to the third Sunday in October).
Brazil: West (Acre, Amazonas, Rondonia, Roraima)
The title of this time zone is Amazon Time (AMT). This time zone do not switch to Daylight Saving Time. The difference to Central European Time is -5 h (five hours earlier than in central Europe - CET) and -6 hours (CEST).
Brazil: Central (Mato Grosso, Mato Grosso do Sul)
This time zone is also called Amazon Time, with the difference that there is a time change in these two states. The Amazon Summer Time (AMST) is valid from October to February. Here, wintertime, the difference with central Europe (CEST) is -6 hours, and during summertime CET is -4 hours. During the days or weeks, where the time has been changed only in one of the countries, the difference will be of -5 hours.
Brazil: Northeast (Alagoas, Amapa, Ceara, Para, Maranhao, Paraiba, Pernambuco, Piaui, Rio Grande do Norte, Sergipe, Tocatins)
This time zone is called Brazil Time (BRT). In these states, there is no daylight saving time. The difference to Central European Time is -4 hours and during CEST it’s -5 hours.
Brazil: Southeast (Bahia, Distrito Federal, Espirito Santo, Goias, Minas Gerais, Parana, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, Sao Paulo)
This time zone is also called Brazil Time (BRT), with the difference that they have Brazilian Summertime (BRST), valid from October to February. In Southeast, Brazilian wintertime and CEST have a difference of -5 hours (in southeastern Brazil, it is then 5 hours earlier than in Central Europe). During the period of the BRST and Central European Time (winter) there is a difference of -3 hours. During the days or weeks where the time has been changed only in one of the countries, the difference will be of -4 hours.
Brazil: islands (Fernando de Noronha and others)
The name of this time zone is Fernando de Noronha Time (FNT). There is no time change to DST. During European winter, the difference is -3 hours. During the summer (CEST) there are -4 hours difference.