I think you'll be in the clear.
I interviewed in Nov/Dec 2008 and Jan/Feb 2009. The latest interview I attended was at Duke on Feb 2nd, which was the last interview day they offered that year. Most programs, to my recollection, did not offer February interview days.
If you run into an issue on the SICU rotation, try to see if talking directly to the attending on service about taking a day off...with all due respect to the 4th year medical student's academic prowess, you will likely not be the single strand of glue that holds the entire SICU together, and they will be able to survive one day without you.
Good luck with things!
dc