Um... This is an unofficial holiday, correct? So shouldn't there have been some sort of discussion prior to the page's creation? And doesn't this article qualify as a new Stub, something illegal here?
(--) 10:28, 12 May 2017 (EDT)
- Nintendo celebrates it, and they do special stuff on the day too. I'm fairly certain that makes it official. Hello, I'm Time Turner. 12:11, 12 May 2017 (EDT)
Rename to 
Simply put, while it is spelt Mario Day by most people, whenever Nintendo officially celebrates this day they call it Mar10 Day. The only time that I remember them spelling the day Mario Day is the first time they officially celebrated the day with the video "Celebrate Mar. 10 - Mario Day!". Every other time they spelt it they spelt it as Mar10 Day which is its most recent name, which should take priority. Doomhiker (talk) 12:24, 9 March 2019 (EST)
- The two stylizations are used interchangeably here here. I think that Mario Day is the proper style, with Mar10 Day being mainly used for promotional material.
- (--) 15:29, 9 March 2019 (EST)