Hallo, From one of our contacts in Brazil I got the question what needs to be done to adopt new Brazilian Summer time. I received this info: There is a possibility the summertime will return in Brazil. If this happens ( it’s currently being discussed on governmental levels ) it will be by the end of October. With these links: https://www.gov.br/mme/pt-br/assuntos/noticias/ons-divulga-estudo-que-avalia... https://www.gov.br/mme/pt-br/assuntos/noticias/alexandre-silveira-diz-que-ho... Apparently the current expectation is that the final decision will be made this week. I explained that we use the timezone files from iana, so if this is decided these files needs to be changed before we can adopt them. Have not seen anything about this possibility yet, so I wanted to inform you about this discussion. Regards, R.J.Rens