Samhain in the Northern Hemisphere and Beltane in the Southern Hemisphere
Samhain in the Northern Hemisphere and Beltane in the Southern Hemisphere is held on November 1. Celebrations start at sunset of October 31. Neopagan Wheel of the Year. This event in the first decade of the month November is annual. 
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Samhain marked the Celtic New Year, the end of summer, and the end of the harvest season. It also signaled the beginning of winter, which they associated with death. On this day, the Celts believed the veil between the living and the dead was especially thin. This allowed spirits of the dead to visit the living.
For the Celts, who lived during the Iron Age in what is now Ireland, Scotland, the U.K. and other parts of Northern Europe, Samhain (meaning literally, in modern Irish, “summer's end”) marked the end of summer and kicked off the Celtic new year.
Similar holidays and events, festivals and interesting facts
Allantide on October 31 (Cornwall);
Hop-tu-Naa on October 31 (Isle of Man);
Blessed Dominic Collins on October 31 (Catholic, Ireland, Society of Jesus);
Samhain on November 1 (Celtic harvest festival and Druid festival of Celtic mythology);
Calan Gaeaf, celebrations start at sunset of October 31. on November 1
World Sandwich Day on November 3
International Day for Biosphere Reserves on November 3
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