What is Superb Owl Day? While it likely existed offline before its internet usage, the earliest known posting about "superb owl" was by Twitter user @shawnw on February 3rd, 2008. That day, the tweeted, "Superb Owl party tonight!". Google assumes that Superb Owl Day is simply Super Bowl Sunday misspelled (SuperbOwl without spaces). Regardless, it has become fun to share owl images on Super Bowl Sunday. Enjoy the game & enjoy the owl images all over social media - smile.