Speaking of sleep(or lack thereof), I pulled an all-nighter last weekend, and ran into two of my squaddies at 4:00am! Funked had just logged on before class, and Asmodan was flying in the middle of the afternoon(in Poland).
For US fliers, you can have lots of fun on the weekend morning between 3-5AM(central time), lots of fun fights. I had a 15 minute fight last Saturday morning with another pilot, he in a Niki, me in an La-5. Was the most intense one v. one I've ever had in AH.