Fr. Z has his ideas on the date and I have mine.
Personally, I have seen so many dates come and go that I don't know if it will ever happen. However, I doubt it will be on February 22.
Jeff has created a Indult date predictor. I have it located in at the top of the sidebar. It gives random dates, so it is bound to be correct at least once.
H/T to Brian for this cartoon which was created by Paul Nichols.