Yes, it’s time to get out your tuxedo or penguin costume as this April 25th is International (World) Penguin Day. So, what exactly is International Penguin Day and when did it begin? For me it began about 20 years ago when I read an article in the Science New York Times about researchers at McMurdo Station in Antarctica who had noticed that every year, like clockwork, on April 25th a colony of Adelie penguins returned from months at sea to the exact same spot on the exact same day every year. These delighted scientists and their support crew marked it on the calendar and would make a day of it, gathering near the shore to celebrate and welcome the penguins who would arrive by the hundreds right on schedule every year. It became an unofficial holiday at McMurdo known to the staff as Penguin Day. So when I read the article in The Times two decades ago, I became intrigued and contacted some folks I knew who had worked at McMurdo Station to confirm. Not only did they confirm, but they expanded on the story, which I then passed along in an article in the print version of the Penguin Post in 1997. In the article I gave it a bit more of an important title calling it World Penguin Day since I felt Antarctica is an international place, and besides World Penguin Day sounds like a holiday penguin lovers everywhere could celebrate. Within a couple of years with the dawn of the internet word of the April 25th Adelie penguin phenomenon spread and it took on a life of its own to the point where it’s now an internationally celebrated “niche” holiday. So, now that you know it’s World Penguin Day, what should you do to celebrate? Obviously, this is a holiday to have fun with and put your penguin passion front and center. So have a blast and try to do lots of things “penguinish”, whether dressing in plenty of black and white, wearing penguin apparel and / or accessories, eating fish (healthy), waddling every now and then (remember to stretch first), telling penguin jokes (keep them clean), watching a penguin video (be it a nature film, animated or something in between like Mr. Popper’s Penguins), read about penguins (plenty of kids and adult books are available), visit penguins at your local zoo or aquarium, adopting a penguin or maybe even treating yourself by buying up hordes of penguin merchandise.