Not to disagree with Mr. Hudson, whom I very much respect, but if you were arrested on a Friday night you could be held over the weekend and up through Tuesday night without the need to charge you or bring you before a judge. Wednesday morning you would either have to be charged or released. If my math is correct that equals about 108 hours, assuming a 6 pm Friday arrest.
Moral: don't do your crime Friday afternoon. Monday and Tuesday are better from a defendant's perspective.