As previously announced, the CBOT will implement a 22 hour trading day on its electronic platform. The expansion of trading hours is in response to global demand for additional trading opportunities at the Exchange. This enhancement will be completed in conjunction with the upgrade to Release 9.0 on the CBOT electronic platform on October 9, 2005, and will make CBOT products available to electronic market users for one additional hour each day. The new operating hours for the CBOT electronic platform will be 6:00 p.m. â 4:00 p.m. Chicago Time, with the pre-opening session now beginning at 5:30 p.m. The session start when users can begin to login will be 5:25 p.m. Have a nice weekend everybody.