Sunday, November 26th was a historic day for the NHL because on tis day 100 years ago, the NHL was officially founded.

Who would have thought 100 years ago that hockey would grow and become as popular as it is now?  Not only that, but who would have thought we'd be celebrating this day on social media 100 years ago?

Well, that's exactly what's been happening Sunday as teams have been wishing the National Hockey League a Happy Birthday on Twitter.

The NHL also celebrated the birth of hockey, but they did it in a historic way as they tweeted out the first ever schedule which was written by hand.

How cool is that?  Also, the fact that the NHL tweeted that handwritten piece of history truly shows how far the game has come.

Happy birthday NHL and here's to 100 more incredible years!

(H/T: NHL)