Think back, good citizen, to the earliest Halloween your young mind remembers. For many, you felt the crisp change in the air from fall to winter and, perhaps, of the dead and unseemly creatures waking from their unholy slumber.
Halloween is celebrated on October 31 every year. There are many ways to experience the day. Kids trick or treat in their neighborhood or their local mall. Parents get to dress up the kids as silly things - like Boo from Monsters Inc. Adults get to wear epic level costumes that scare and delight.
For more on the history of Halloween: