What is your favorite and least favorite days of the week? My favorite day of the week is Friday and my least favorite is Monday. Friday is my favorite day of the week because it starts the weekend and the weekend is the best and we get off of school for 2 days after Friday. Monday is my least favorite day of the week because I have a hard time getting up sometimes because we were able to sleep in on the weekend. Also, we start school again for 5 days. So you see, that is why for me, Friday is the best day out of the week and Monday is the worst day of the week.