Halloween falls on October 31 because the ancient Gaelic festival of Samhain, considered the earliest known root of Halloween, occurred on this day.
In the eighth century, Pope Gregory III designated November 1 as a time to praise all saints.
Soon, All Saints' Day incorporated some traditions of Samhain and the evening before was known as All Hallows Eve, and later Halloween.
Over time, Halloween evolved into a day of activities like trick-or-treating, carving jack-o-lanterns, festive gatherings, donning costumes and eating treats.
Today’s the day to eat candies and sweets to your heart’s content! Happy Halloween!