How did Halloween get its name?
Halloween was originally called All Hallows' Eve which means the
evening before All Saints' Day. "Hallow" is an Old English word for
"saint". This was shortened to Hallowe'en and finally to Halloween.
Satanists have adopted Hallowe'en as one of their three main
seasonal days of celebration. The others are Walpurgus Nacht on
MAY-1 and the Satanist's birthday. All-Saints-Day and
All-Hallows-Eve were never celebrated together. it has always been
the day after.
Halloween's name is a shortening of All Hallows Eve, the day on which some believe all the bad spirits come out.