Season 2's intro aired today, and with that came the birth of Discord! I don't think anyone expected this guy to be a returning character for the rest of pony, but he swooped in, caused a bunch of chaos, and gave us one of the best openings to a season over the entire life of G4.
Time for history! Go get major events of 9/17 below.
2011
Return of Harmony aired today, and Daniel Ingram dropped a hint that episode 3 would get a remastered theme!
2012
Does she like clouds though? She's always destroying them.
Journey of the Spark had to hold back it's ambitions a bit today, but we still got lots of content out of the project anyway!
2015
New York Fashion Week went pony. 
2016
Would you Skyrim poni?
And we went to Las Pegasus today!
And another slow day! This is a good Rarity, so have it.
