According to traditional management of DST in Brazil, the government doesn't issue a decree about the DST start for the next period until September-October. Therefore anything before an official decree is just guesswork. I don't think 21.st. October is a bad guess (similar to 2005, which was not an election year I think), but First Sunday of November (applied in 2006) is also a good guess - we shouldn't change forth and back between different guesses until the official decree is issued. If Steffen Thorsen has some hidden aces up the sleeve (www.timeanddate.com) with more official information, certainly we would like to hear about it. But I doubt it, again based on Brazilian politics. If Amar Devegowda has some more authoritative information than the two links below, we would like to hear about it. Regards, - Jesper _____ From: Amar Devegowda [mailto:ADEVEGOW@in.ibm.com] Sent: Thursday, March 01, 2007 6:20 AM To: Olson, Arthur David (NIH/NCI) [E] Subject: Brazil DST Rules for 2007 Importance: High Hi Arthur, This is Amar Devegowda from IBM India Software Labs. It has been brought to our notice that the DST rules provided in Olsen Time Zone Database and actual DST rules in Brazil for year 2007 and beyond are different. In 2007, as per the Olsen the DST starts on the first Sunday that comes on or after November 1st. However, the actual DST rule states that the DST starts on Oct 21st in 2007. Here are a couple of web sites that show these new DST rules upto 2009. http://www.worldtimezone.com/daylight.html http://www.timeanddate.com/worldclock/timezone.html?n=45&syear=2000 Hence, could you please update the time zone database with the new rules for Brazil in 2007 and beyond at the earliest ? Regards, Amar Amar Devegowda Java L3 Support for Windows, Java Technology Center, IBM India Software Labs, Bangalore, India Telephone 91-80-25094151