Halloween is whatever day of the week October 31 falls on.
Tuesday
Sunday.
It was a Friday.
In 2005, Halloween fell on a Monday.
Trick or treating will be done on a Monday, October 31, 2011, which is Halloween. Times will be listed in your local newspaper.
Halloween will be on Sunday the 31st October 2010
I'm pretty sure it's a Monday feel free to check a calender or correct me
Saturday
Tuesday
Tuesday
Sunday
It was a Monday.