I have a question about Jury Duty.?

I've never had to do Jury Duty. Ok, I called Friday the12th for today (Monday), but since the courthouse was closed today for the holiday I didn't have to go and it said that "Your next ATTENDANCE day is Feb 16th 2010". and that's all it said. I logged onto the website and the website says "Next REPORTING date is Feb 16th 2010" so Im kinda confused because I don't know what time Im supposed to be there. Or...is this telling me that the next time I should call is the 16th? I don't want to not show up and get in trouble, I figure I should just show up at the courthouse at 8:30 am.