Template:OTD/April 21


 * 1999: Chapter 6 of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2000: Chapter 18 of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2001: Episode 42 of Digimon Adventure 02 premieres in North America.
 * 2001: Chapter 30 of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2002: Episode 3 of Digimon Frontier premieres in Japan.
 * 2002: Digimon Tamers: The Adventurers' Battle is released on DVD in Japan.
 * 2002: Chapter 42 of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2003: Chapter 54 of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2006: Chapter 05 of Digimon Next is published in Japan.
 * 2008: Episode 27 of Digimon Data Squad premieres in North America.
 * 2010: Chapter 10 of Digimon Xros Wars is published in Japan.
 * 2013: Chapter 1 of Digimon World Re:Digitize Encode is published in Japan.
 * 2014: Chapter 13 of Digimon World Re:Digitize Encode is published in Japan.