October 31 is Reformation Day.
Tim Challies has posted a Reformation Day Symposium. There are several links from this post to other posts about the Reformation Day. Be sure to check back a few times as he is adding links as he gets them. This is the true Christian Holiday that can be celebrated today in place of Halloween.
Today is Reformation Day—the 491st anniversary of the day Martin Luther nailed his 95 Theses to the door of Wittenberg’s Schlosskirke. That small act triggered a series of events that forever changed the world. It stands as one of the most important events in all of history—though an event that has been largely forgotten. Today we remember that day and express our gratitude to God for raising up men such as Martin Luther.