Reformation Day offers a theological reason for its observance of Reformation Day, stating that: Alongside Reformation Day, many Protestant Churches observe All Hallow's Eve on October 31, the vigil of All Saint's Day. Reformation Day Reformation Day is a Protestant Christian religious holiday celebrated on 31 October, alongside All Hallows' Eve (Halloween) during the triduum of Allhallowtide, in remembrance of the onset of the Reformation. According to Philip Melanchthon, 31 October 1517 was the day German monk Martin Luther nailed his "Ninety-five Theses" on the door of the All Saints' Church in Wittenberg, Electorate of Saxony in the Holy Roman Empire. Historians
All-Hallows-the-Less the setting for the London Institute in Cassandra Clare's young adult book series, "The Infernal Devices". All-Hallows-the-Less All-Hallows-the-Less (also known as "All-Hallows-upon-the-Cellar") was a church in the City of London. Of medieval origin, it was destroyed in the Great Fire of London in 1666 and not rebuilt. The church stood on the south side of Thames Street in Dowgate ward, to the east of the All Hallows the Great. In some early records it is called "Allhallows on the Cellars", as it stood on vaults. The steeple and choir were built over an arched gateway, which formed the entrance to