Halloween is a contraction of All Hallows Eve. It is a celebration which is observed in a number of countries and begins the 3 day observance of Allhallotide, a time to remember the dead and the faithfully departed.
Halloween includes trick or treating, going home to home in a guise or costume dressed up as ghosts, witches, skeletons or other characters, attending Halloween parties, carving pumpkins, lighting bonfires, visiting haunted attractions and watching horror films.
Halloween occurs a single night of the year and is spooky fun for both kids and adults alike.
Having no clocks that would represent Halloween I did find a Steampunk clock here that I found quite fascinating.
Have a safe Halloween.