My most useless super power

In addition to my fairly useful super powers is one that is no less extraordinary but useless.
Whenever I wake up in the middle of the night, for whatever reason, I can accurately state the time within fifteen minutes of the actual time, and oftentimes much more accurately than that.

Every time, without exception.

How I manage this is a mystery to me.

But an even bigger mystery:

How am I ever going to use this super power to defeat evil?