Halloween is the eve of the Christian feast of All Hallows' Day, also known as All Saints' Day. It is primarily celebrated by Catholic and Anglican churches. The holiday has become more secularized in modern times and is widely celebrated in many countries around the world.
Halloween is the eve of the feast of All Hallows' Day in Christianity. All Hallows' Day is a Christian holiday that is celebrated on November 1st and is dedicated to remembering the dead, including saints, martyrs, and all the faithful departed.