Okay, I don't know the EXACT date (since there wasn't as good a record keeping in the 19th century, I doubt there even is an exact date anymore), but we do know September 1889 Nintendo was formed as a simply Hanafuda card company.
It was actually Gunpei Yokoi (Gameboy, Metroid, Game and Watch) who brought the company into games in general with Game and Watch in the late 70's (and arguably the first "videogame character" ever).
So, celebrate 120 years of a company everyone in the modern world knows nowadays.
Congrats on the first 115 Nintendo!
Great.
Now lets see if they can actually manage to continue pleasing the crowd for the rest.