On 12/18/2017 02:22 AM, Steffen Thorsen wrote:
According to many media sources, next year's DST start in Brazil will move to the first Sunday of November, and it will stay like that for the years after. Thanks very much for the heads-up. I installed the attached proposed patch into tzdb's development version.
In September, RTTNews reported that Operador Nacional do Sistema Elétrico (ONS) had done a preliminary study saying that the effect of DST on Brazil's energy usage was trivial and decreasing; see <http://markets.businessinsider.com/news/interestrates/BRAZIL-Government-Look...>. Although I assume this was part of a push to cancel DST entirely in Brazil, it looks like the government decided to cancel just two or three weeks' worth.