As most of people would like I like Saturdays the most because it's a last working day and we have Sunday after it which is off day and hate Mondays as have to go to the work after a weekend break.
Mondays are the worst because I have to go back to work. Saturday is the best because I have the whole day off and can rest. Fastest is Sunday because I know Monday is coming. Slowest is Monday because I just want the week to be over with.