Halloween meaning : : the night of October 31, the eve of All Saints' Day, commonly celebrated by children who dress in costume and solicit candy or other treats door-to-door.
We all know the traditional meaning of Halloween, but some sites I've read go a little deeper. This special night preceding All Halows day (November 1st) has been considered for centuries as one of the most magical nights of the year. A night of power, when the veil that separates our world from the Otherworld is at its thinnest. (Source)
In some suburbs, they are talking about moving Halloween to tomorrow which is November 1st, all because of weather? What a crazy idea. Who gets to decide to move an actual day on the calendar? Very weird.