The 9th of Barrakas, 880 YK, marked the end of the Silver Crusade. How this date is celebrated depends on where you are. Regardless, the holiday commemorates the end of one of the darkest times in the church’s history.
In Thrane, this date is referred to as Last Reprieve, the last of many apparent ends to the power of the curse of lycanthropy, a moment to draw breath. It’s a time to take stock of what you have and learn from the mistakes of the past. Ministers give sermons in the church’s temples, examining the events of the Silver Crusade and educating people on where it went truly wrong, and the evils done in the name of the greater good.
In Aundair, this date is referred to as Victory Day, and represents the righteous victory over the lycanthropes. Ministers give lectures on the dangers faced by the templars during the crusade, and the brave sacrifices made for the greater good. Children play in the street, re-enacting notable battles from the crusade, and people hold parties where they destroy werewolf-shaped piñatas.
Source: Sarhain's Guide to the Silver Flame
Victory Day commemorates the successful conclusion of the lycanthropic purge. Children act out great tales of these final battles with toy swords, while adults attend sermons on the lessons of the triumphs, the defeats, and the sometimes questionable methods used by the templars during the purge.
Source: Faiths of Eberron