Template:OTD/December 21


 * 1998: Chapter of Digimon Adventure V-Tamer 01 is published in Japan.
 * 1999: Chapter of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2000: Chapter of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2000: Digimon Adventure 02: Digital Partner is released in Japan.
 * 2000: Digimon World: Digital Card Arena is released in Japan.
 * 2001: Chapter of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2002: Chapter of Digimon Adventure V-Tamer 01 is published in Japan.
 * 2006: Chapter of Digimon Next is published in Japan.
 * 2006: The single Hirari is released in Japan.
 * 2007: Chapter of Digimon Next is published in Japan.
 * 2010: The first special chapter of Digimon Xros Wars is published in Japan.
 * 2011: Chapter of Digimon Xros Wars is published in Japan.
 * 2011: Episode of Digimon Fusion premieres in North America.
 * 2013: Chapter of Digimon World Re:Digitize Encode is published in Japan.