Only a question for the trading crowd.

What date should we cease trading for the Christmas break and what is a good date to resume?

That I am aware that the banking world and everyone else takes time off around Christmas and New Years and this quantity declines dramatically. I'd only begun to demonion last November so I don't really remember much of the Christmas season except that I did take some losses to my demo account seeking to exchange when there was little to no market traffic.

With thanks!