Samhain the 1 November date was a Germanic rather than a Celtic idea. In the 11th century, 2 November became established as All Souls' Day. This created the three-day observance known as Allhallowtide: All Hallows' Eve (31 October), All Hallows' Day (1 November), and All Souls' Day (2 November). It is widely believed that many of the modern secular customs of All Hallows' Eve (or Halloween) were influenced by the festival of Samhain. Samhain and Samhain-based festivals are held by some Neopagans. As there are many kinds of Neopaganism, their Samhain celebrations can be very different despite the shared name. Some
Samhain try to emulate the historic festival as much as possible. Other Neopagans base their celebrations on sundry unrelated sources, Gaelic culture being only one of the sources. Folklorist Jenny Butler describes how Irish pagans pick some elements of historic Samhain celebrations and meld them with references to the Celtic past, making a new festival of Samhain that is inimitably part of neo-pagan culture. Neopagans usually celebrate Samhain on 31 October – 1 November in the Northern Hemisphere and 30 April – 1 May in the Southern Hemisphere, beginning and ending at sundown. Some Neopagans celebrate it at the astronomical midpoint