October 31 is Halloween. It is the end of summer and the start of the long, cold winter. Two thousand years ago, people believed that the spirits of dead people would come back to the living world on this day. They also believed that these spirits could help the living people see their future.

The day after Halloween, November 1, was known as “All-hallows.” On this day people went to church to remember the great people who died for their religion. The night before “All-hallows” was called “All-hallows' Eve.” The name later became “Halloween.”