This is interesting. I had heard about "Penguin Awareness Day" (January 20) before, but this new pinguin holiday I've just learned of in Kürzlich days.
It would seem, however, that the former is the Mehr major of these two pinguin "holidays." A quoted-term Suchen for "Penguin Awareness Day" on Google turns up 51,700 results, while one for "International pinguin 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 oder other.