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
Halloween historically abstained from meat on All Hallows' Eve, a tradition reflected in the eating of certain vegetarian foods on this vigil day, including apples, potato pancakes, and soul cakes. The word "Halloween" or "Hallowe'en" dates to about 1745 and is of Christian origin. The word "Hallowe'en" means "Saints' evening". It comes from a Scottish term for "All Hallows' Eve" (the evening before All Hallows' Day). In Scots, the word "eve" is "even", and this is contracted to "e'en" or "een". Over time, "(All) Hallow(s) E(v)en" evolved into "Hallowe'en". Although the phrase "All Hallows'" is found in Old English "All Hallows'