I've noticed that when ever I go to rate my day, or judge if i have a good day or not, the day part has no impact, it's always about the night, unless the night has no significant impact.
day = going to disney world and having an awesome time.
night = but you go home at night and your parents yell at you
most likely your going to think your day was mostly awful
or
day = bored all day and lonely
night = girlfriend had an amazing conversation
most likely i think I had an amazing day