@graphite@LifesAHaskell February 30th 's not a real date. February only has 28 days (or 29, in leap years). The post plays on this likely happening duea them using a faulty datetime handling software.
@graphite@LifesAHaskell You probably just need some time to think it over. Wait until February 30th, and if you still don't get it by then, we'll explain the joke :)