According to Federico A. C. Neves and Herton Ronaldo Krzesinski there are some exceptions to the rule of ending DST Third Sunday of February in Brazil, which seems to be correct. I just wanted to point out that there is a Carnival dates calculator at HYPERLINK "http://www.ipanema.com/carnival/dates.htm"http://www.ipanema.com/carnival/d ates.htm from which I calculated the following Carnival Sunday list for 2008 to 2041: Carnival Sunday 2008-2041: 2008-02-03 2009-02-22 2010-02-14 2011-03-06 2012-02-19 2013-02-10 2014-03-02 2015-02-15 2016-02-07 2017-02-26 2018-02-11 2019-03-03 2020-02-23 2021-02-14 2022-02-27 2023-02-19 2024-02-11 2025-03-02 2026-02-15 2027-02-07 2028-02-27 2029-02-11 2030-03-03 2031-02-23 2032-02-08 2033-02-27 2034-02-19 2035-02-04 2036-02-24 2037-02-15 2038-03-07 2039-02-20 2040-02-12 2041-03-03 This basically confirms the rules elaborated. Note that there is a typo "bellow" in the rules given in the earlier email, and that perhaps instead of giving specific dates, it might be better to give the rule for the exception dates like this: +Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - +Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - +Rule Brazil 2015 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2016 2022 - Feb Sun>=15 0:00 0 - +Rule Brazil 2023 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2024 2025 - Feb Sun>=15 0:00 0 - +Rule Brazil 2026 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2027 2033 - Feb Sun>=15 0:00 0 - +Rule Brazil 2034 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2035 2036 - Feb Sun>=15 0:00 0 - +Rule Brazil 2037 only - Feb Sun>=22 0:00 0 - +Rule Brazil 2038 max - Feb Sun>=15 0:00 0 - This should give the same actual dates, but will give a hint on how the dates behave after 2038. A bit a matter of taste I admit. Usually we don't give rules as Sun>=x when this spans only one year, but here the same rule Sun>=22 is applied a few years later each cycle. - Jesper Nørgaard Welen No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 270.7.0/1681 - Release Date: 2008-09-19 15:54