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 Stokes suggested an etymology from Proto-Celtic "*samani" ("assembly"), and Joseph Vendryes suggested that it is unrelated to "*semo-" ("summer"), because the Celtic summer ended in August. The Gaulish month name "(pertaining to) Summer" on the Coligny calendar is likely related to the word "Samhain". A festival of some kind may have been held during the 'three nights of "Samonios"' (Gaulish "trinux[tion] samo[nii]"). The Gaulish calendar seems to have split the year into two-halves: the first beginning with the month and the second beginning with the month , which is related to the word for winter, PIE "*g'hei-men-" (Latin "hiems", Latvian