I actually got some information from a power seller on timing of items. She said that starting an auction on a Friday, for 10 days gets the most exposure because you have two weekends there. Auctions are better ending on a weekday. Typically people have weekend plans and don't have the time to watch or bid on an item that's ending. She said that her best auction days are tuesday or wed. 9pm est.
In my opinion, start your auction super low, and put a reserve. That way you get people to start the bidding early.
Hope this helps.