Mischief Night

Proper noun

 * 1)  A particular night during which young people play pranks and do mischief in their neighborhoods.
 * 2)  The night before May Day.
 * 3)  Mostly practiced in the North West of England, Mischief night (“missie night” in Liverpool ) is the 30th of October (the night before Halloween).
 * 4)  The night of the 30th to the 31st of October (the night before Halloween).