Samhain - pronounced Sah-wain - depending on where and who you learnt it from!
It was the old Celtic New Year and many modern pagans celebrate it as such.
It is, in other parts of the world, and here JC's ears prick up because he had a long diatribe about prople setting a place at table for the departed during the Feast of the Dead which is held on the Día de Muertos, the Day of the Dead.
In his usual pig-ignorant fashion he could not understand the difference between "laying a place" for the departed and actually serviing food for them.
Samhain is celebrated by pagans as the Celtic New Year, the final harvest of the year, the time when nature shuts down for the dark part of the year and is the counter to Beltaine or Beltane on May 1st which is the major fertility festival.
It is a time when all those who were loved, respected, or are for any reason missed after having passed over to the Summerlands, are remembered, their lives celebrated.
It is believed by most pagans that this is the time when the veils between the worlds of the living and of the dead are at their thinnest and it is frequently a time when pagans, individually or in a group or as a Coven, will, as part of a ritual, meditate upon the memory of friends now in the Summerlands and will sit in silence and wait to see if the dead wish to speak to them.
Please note, we do NOT ask them to speak to us. It is their decision as to whether or not they contact us, their prerogative. Hence the pagan community's "dead aginst it" attitude to the Ouija Board.
The festival which is called Samhain, like Yule, Ostara, May Day/Beltaine, were celebrated long before the coming of Christianity to these islands but, and there are posters here who vehermently deny this, but it is too much to be a coincidence that so many Christian festivals and holy days fall on or very close to pagan ones for it not to have been a delibertate ploy to get pagans to celebrate the Christian fesival by having on the same day or very close to the same day as a pagan one.
Hope this helps.