What day do you end auctions, and what time?

Some store owners use Ebay and other auction sites to drive traffic into their stores. The question I have heard alot is when do you end actions and what time are the best?

Here are a couple of neat links with times by categories first:

Best Time to end an Auction?

Where is an interaction calendar, and they did note that they are NOT including times that revolve around holidays

Interaction Calendar

This blogger speaks in more detail about it... Winntail on Ebay