Reformation Day is a religious holiday celebrated on October 31 in remembrance of the Reformation, particularly by Lutheran and some Reformed church communities. It is a civic holiday in Slovenia (since the Reformation contributed to its cultural development profoundly, although Slovenians are mainly Roman Catholics) and in the German states of Brandenburg, Mecklenburg-Vorpommern, Saxony, Saxony-Anhalt, and Thuringia. It is also a national holiday in Chile since 2008.
Most churches transfer the festival, so that it falls on the Sunday (called Reformation Sunday) on or before October 31st and transfer All Saints' Day to the Sunday on or after November 1st. In 2009, it falls on October 25.
(... from Wikipedia on 2010-09-03 13:29:34 )