I couldn't find the decree for the chilean DST change until today (even when it was published on November 23th on the Official Gazette, I searched for it on december 2018 with no avail) http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1... The only extra bit of information is that America/Punta_Arenas is confirmed to not change until 2022 -- Juan Correa Poblete PS Labs (http://www.pslabs.cl)