SubhanAllah.

Just a reminder to all. Jokes are jokes but jokes which entail lying are not good in Islam. Incomparibly worse are those jokes with shirk type aspects embedded in them. The fact that someone can say this is "too serious" doesn't surprise me with the state of the Ummah today.

The companions of the Prophet (peace be upon him) used to be SO concerned about the minor shirk. Imagine our state nowadays with the major shirk. Look how the Ummah is engrossed in major shirk (calling upon the living or dead for example via du'a) and look at the Muslims being destroyed as a result of it.

To point out that these dates/events repeat (and that it is a rarity) would have been sufficient; not to add that joke on it.