Allantide, also known as Saint Allan's Day or the Feast of Saint Allan, is a Cornish festival that was traditionally celebrated on the night of 31 October, as well as the following day time, and known elsewhere as Allhallowtide. The festival in Cornwall is the liturgical feast day of St Allan, who was the bishop of Quimper in the sixth century. As such, Allantide is also known as Allan Night and Allan Day. The origins of the name Allantide also probably stem from the same sources as Hollantide and Hallowe'en itself.