Evening...I usually sell after supper. I think that's best...so around 6pm or so.
Your user name sounds sooooo familar. I think about 2 years ago or so I remember purchasing a JPN Samurai Shodown 1 from you. That was my first JPN game. I hope this is the right guy. It just made me think...if it's you.
I've heard that it's good to post/end on Sunday around 10:00 pm GMT. That way it's still early enough for both the European and American markets to be around for the end of the auction. Seems to work OK for me.