how stupid is that?

This morning, did all the usual early morning home things. Then switched the Pc on and did some scans for trading opportunities. Then just after normal market opening time brought up Iress to check the market depth of stocks on my watch-list and noted that no-one seemed to be buying or selling. Looked at the course of sales and yes no transactions gone through. Whats going I thought? Got on the phone to CommSec to find out whether it was a system glitch or what and it suddenly hit me. It was Sunday not Monday. How stupid is that??