alilsassy: You need to remember, that the day starts at midnite Czech time. I'm not positive where you are, but here in the Eastern U.S. the "new day" starts at 6pm.

I believe Pedro and Imsoaddicted are correct as well. It is her last vacation day. Her vacation days remaining probably turned to zero at 6pm eastern yesterday (which would explain why you say it has been "two" days). I would imagine at 6pm eastern, she will start timing out.