Traffic Circle Etiquette: signal if you're leaving the circle -- I'm not going to assume that it's okay for me to enter, and I'm going to be very annoyed with you if I had to wait for no reason. And, feel free to signal left when you're staying in. That's a nice clear level of communication right there.
It's almost daylight and it's not even seven!
Wouldn't you make sure that you hand in your time sheets so that your company's bookkeeper could write your paycheck? Cutoff dates are clearly listed, people.