This here is a magic calendar. It will predict where I will be, and at what times, on what days. 

Here are some ways you could use this magic for Evil or Good. Your options include:

1 - You could use these predictions to get a hit man to kill me

2 - You could use the magic to find me if you want to date me/ stalk me.

3 - For laughing at me in a publicly accepted context.

4 - Watching me day in, day out, without me knowing at all, for many many years (to no definite end).