re: Poker & Time of day, does it make a difference?
This is very subjective, but I find that I have more success playing between 8:00 a.m. and noon Eastern time. Perhaps it's because I'm fresher, but it seems that the quality of opposition is also far below the evening and late night hours.
Playing here on the East Coast in the late night/wee hours means that you are playing a lot of West Coasters. Don't wish to start a gang war, but I think they are tougher overall than players in the Midwest and East. I usually avoid night owl play, unless it happens to be a late tourney start. I stay out of ring games altogether after 11 pm.