[Salamander]

*sigh*

That is a FR "running joke" graphic.

Perhaps if you'd read it in context of the post to which it was a *reply*, you'd have seen that.

If nothing else, my advice to Google 'metonic cycle' should've been a tipoff to the sarcasm, therein.

This guy is simply 'discovering' what's been known by "primitives" for a very long time.
Ancient cultures have been using the metonic cycle to "predict" agricultural trends for millennia.

For instance, part of the arrangement of Stonehenge keeps track of the metonic cycle.

[MizSterious]

My apologies. I have seen people on FR post similar things who absolutely serious in their mocking.