Samhain is observed on October 31, 2018. Samhain is a Gaelic festival marking the end of the harvest season and the beginning of winter or the "darker half" of the year. Most commonly it is held on 31 October - 1 November, or halfway between the autumn equinox and the winter solstice.
We have placed a detailed description of this event on this page: Samhain 2017. For further information please stop by there!