Pronoun Trouble

The site's telling me it's the 16th to the 18th... *went to look* Cause, whichever it is, it's either over a week before or right after finals @_@. I couldn't go until the night of the 16th/morning of the 17th, though, unless I convince my choir director she doesn't need me to sing at graduation. Which won't happen unless I come up with a really really good excuse XD;