strange days

do you ever have one of those days where you feel completely off your game and everything seems weird in the universe? at work you have trouble concentrating, you can't seem to communicate anything to anyone, and generally you feel like the universe is off balance? have you ever had one of those days when everyone you talk to is having the same experience? seriously - is that a coincidence? or is it just a normal tuesday? this has happened before when i am having an off day and i'll end up talking to a bunch of people who happen to mention feeling the same way. do humans have sympathy feelings for each other or do our surroundings (down to the molecular/solar level) have an affect on our thoughts and feelings?