According to javascript, 01971 is just 1971. Meanwhile, 01671 is 953.

Man! JS never stops trolling you.

It's one of these Long Now things. The goal is to get people to think in long term time frames.

That’s a ZipCode.

They’re intended to derail every thread that includes them into discussions about this stupid date format, thus wasting lifetimes of person-hours.

It’s surely an effort by misanthropes who want the worst for humanity. If it’s coming from any benign motivation, then it’s totally misguided.

I'm sorry, but this reads somewhat misanthropical itself. Let people have some fun?

They’re trolls. They’ve been doing this for years. It’s just trolling.