Dear sir(s), Once again, Brazilian Government changed rules (if such rules ex- ist at all) that define dates for the begining and ending of sum- mer time. This time, however, some states started (or restarted) adopting summer time as well. I am attaching a file (in "diff -u" format) that cointains modi- fications made to .../zoneinfo/southamerica. I believe it to be accurate. Modifications were made after information on federal decrees 3150 and 3188. As a side note, I recommend that zone file America/Sao_Paulo be renamed to America/Brasilia. Brasilia is the nation's capital and also the time reference for everything in the country, even for states in different time zones. The three major cities in the country, Sao Paulo, Rio de Janeiro and Belo Hori- zonte (located, respectively, in the states of SP, RJ and MG), all observe summer time together with Brasilia. --- Paulo A. P. Pires -- Network Administrator pappires@coppe.ufrj.br