Yes, you can have such a proof. It'll just take a few days--until the end of the week.
There are times when the best thing you can do is realize that worrying over something that may or may not happen will make no difference. I'd advise you to make the most of this week. Actually, I'd advise everyone to make the most of ALL time. And "making the most" of it doesn't mean planning some blowout party, it means doing whatever good you can, when you can.
If you haven't noticed, the people who come up with end-of-the-world predictions just move the target down the road a little every time they get to one. If you're worried about this week, you can wind up worrying the same way about every week. Or you can just stop worrying and make the most of what time you have left, whether it's a few days or the next 90 years.