https://postimg.org/image/3yphp8w2f/
Here's the chart, and actually going on what you've said in your reply it could even be 28 days...so really this chart may have just picked up on one time when you'll be reading for someone, maybe even on the bench you were on about.
I don't think this question was really suitable actually, it needed to be something that was a dead certain to be happening like i said in the opening post. And this timing method doesn't even stretch over 3 years.
