April 21

==Television==
*2001: The 14th Annual Nickelodeon Kids' Choice Awards airs on Nickelodeon.
*2012: Big Time Tour premiered.
===Episode premieres===
Year	Show 	Episode(s)
1991	Family Double Dare 	"Queen of Hearts vs. Krunchers"
1996	Rocko's Modern Life 	"Zanzibar" / "Fatal Contraption" (season finale)
1996	The Mystery Files of Shelby Woo 	"Hot Seats (Part 2)"
2001	The Brothers Garcia 	"Love is Very... Confusing"
2002	Caitlin's Way 	"The Promise (Part 1)"
2003	Little Bill 	"The Musical Instrument" / "The Choir"
2004	Dora the Explorer 	"Louder!"
2007	El Tigre: The Adventures of Manny Rivera	"The Late Manny Rivera" / "Party Monsters"
2008	Wonder Pets! 	"Save the Beetles!" / "Three Wonder Pets and a Baby"
2011	BrainSurge 	"Episode 225"
2012	The Legend of Korra 	"The Revelation"
2012	Power Rangers Super Samurai 	"The Strange Case of the Munchies"
2012	T.U.F.F. Puppy 	"Monkey Business" / "Diary of a Mad Cat"
2012	iCarly 	"iOpen a Restaurant"
2012	How to Rock 	"How to Rock a Part-Time Job"
2013	See Dad Run 	"See Dad Host A Playgroup"
2018	Star Falls 	"The Birthday"
2022	Side Hustle 	"That Young Warped Danger Hustle"
2022	The Fairly OddParents: Fairly Odder 	"Cake, Dance, & Solid Gold Pants" (TV premiere)
2022	It's Pony 	"Space Shippers" / "The Lakey Loos"
==People==
===Births===
* 1936: Jim Ryan
* 1969: Traci Page Johnson
* 1970: Nicole Sullivan
April 21