Halloween originated in Ireland as a contraction of All Hallows Even, the day before All Saints Day. On October 31st each year, kids dress up in costumes and go door-to-door collecting candy during trick-or-treating, while others celebrate through costume parties, pumpkin carving, haunted house tours, or scary movie marathons at home.

1. HALLOWEEN
On October 31 Every Year!!!!

2.  WHAT IS IT?
 The name Halloween (originally spelled Hallowe'en) is
a contraction of All Hallows Even, meaning the day
before All Hallows Day (better known as All Saints
Day), a Catholic holiday commemorating Christian
saints and martyrs observed since the early Middle
Ages on November 1.
 It originated in Ireland.
References  http://www.whatishalloween.com/
http://urbanlegends.about.com/od/halloween/a/History-Of-Halloween.htm

3. HOW IS IT CELEBRATED?
• Kids dress up in costumes and go trick or
treating door to door collecting lots goodies.
• Some have costume parties, pumpkin carving
and “haunted house” tours.
• Some celebrate by staying at home and watching
a scary movie.
References  http://www.whatishalloween.com