Couple things...
1) She probably thought "Tursday" meant "Tuesday," which means from Saturday, the day she posted, it *would* have been 4 days until the sub came out. And what's missing in her sentence is a comma--it should read, "4 days, 96 hours," as in 4 days = 96 hours. I believe that was the logic.
2) I can't wait 6 days for act 19 to come out, dammit! >:o