This is interesting. I had heard about "Penguin Awareness Day" (January 20) before, but this new manchot, pingouin holiday I've just learned of in récent days.
It would seem, however, that the former is the plus major of these two manchot, pingouin "holidays." A quoted-term chercher for "Penguin Awareness Day" on Google turns up 51,700 results, while one for "International manchot, pingouin Day" results in a mere 347.
Regardless, it's great to have now TWO days on which to celebrate penguins, whether they be of the "Madagascar" verity ou other.