The end of year exams are approaching? You have to learn something important in the coming weeks? In this case, this date is for you! (which Dato Joey Yap has calculated). This Friday, April 20 at 7:30 am (or between 7am and 9am wherever you are) is the time to choose to start reading or reviewing.
At that given time, move to the Southeast sector of your home and start reading or learning what you need, it's as simple as that! There is nothing more to do.
If you have a Rat (子) in your BaZi it will not work for you.