The sessional dates are set way in advance and posted on the registrar's website. In the summer the dates are posted for the following year. It might be too early if you were looking for the last day of the 2015-2016 year, and even then you could probably figure it out
The exam schedule is what you really want, because you won't know when you're actually done. However, it's highly unlikely (though not impossible) that you'll be done all of your exams by mid-April if you've got 5 exams.