Earliest day on which All Saints Day can fall, while November 6 is the latest; celebrated on Saturday between October 31 and November 6 (Finland, Sweden)

All Saints' Day, also known as All Hallows' Day, the Feast of All Saints, the Feast of All Hallows, the Solemnity of All Saints, and Hallowmas, is a Christian solemnity celebrated in honour of all the saints of the Church, whether they are known or unknown.