I have to guess that most know this already, but
FWIW RE: March expiration
I received the following in an e-mail from the CME:
Change to March 2008 Contract Expiration Date Due to Good Friday Holiday
Because the Good Friday exchange holiday coincides with the third Friday of March (the standard March quarterly expiration date), March 2008 CME Group Equity index futures and options will expire on Thursday, March 20, 2008 instead of Friday, March 21, 2008. Specifically:
The open outcry trading of expiring contracts will conclude at the close of the regular trading hours on Wednesday, March 19, 2008.
Trading of expiring E-mini equity index futures and options contracts will conclude prior to the open of regular open outcry trading hours on Thursday, March 20, 2008. Expiration dates/times by contract are provided below: