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1st
Nothing is currently known to have happened on this day.
2nd
Nothing is currently known to have happened on this day.
3rd
- 2001: Episodes 15, 16 and 17 of Digimon Tamers air in English for the first time.
- 2002: Episode 30 of Digimon Frontier airs in Japan for the first time.
- 2013: Episode 7 of Digimon Fusion airs in the United States of America for the first time.
4th
- 2000: Episodes 15 and 16 of Digimon Adventure 02 air in English for the first time.
- 2001: Episode 31 of Digimon Tamers airs in Japan for the first time.
5th
- 2000: Episode 31 of Digimon Adventure 02 airs in Japan for the first time.
- 2006: Episode 30 of Digimon Savers airs in Japan for the first time.
- 2007: Episode 7 of Digimon Data Squad airs in English for the first time.
- 2013: Episode 8 of Digimon Fusion airs in the English for the first time.
6th
- 1999: Episodes 24 and 25 of Digimon Adventure air in English for the first time.
- 2002: The album Digimon Frontier: Christmas Smile is released in Japan for the first time.
7th
- 1999: Episode 35 of Digimon Adventure airs in Japan for the first time.
- 2006: Digimon World DS is released in North America for the Nintendo DS.
8th
Nothing is currently known to have happened on this day.
9th
- 2010: Episode 15 of Digimon Xros Wars airs in Japan for the first time.
10th
- 2001: Episode 32 of Digimon Tamers airs in Japan for the first time.
- 2001: Episodes 18 and 19 of Digimon Tamers air in English for the first time.
- 2002: Episode 31 of Digimon Frontier airs in Japan for the first time.
- 2013: Episode 9 of Digimon Fusion airs in the United States of America for the first time.
11th
- 2000: Episodes 17 and 18 of Digimon Adventure 02 air in English for the first time.
- 2002: Episode 9 of Digimon Frontier airs in English for the first time.
- 2014: Digimon All-Star Rumble is released in North America.
12th
- 2000: Episode 32 of Digimon Adventure 02 airs in Japan for the first time.
- 2002: Episode 10 of Digimon Frontier airs in English for the first time.
- 2006: Episode 31 of Digimon Savers airs in Japan for the first time.
- 2007: Episode 8 of Digimon Data Squad airs in English for the first time.
13th
- 1999: Episode 26 of Digimon Adventure airs in English for the first time.
- 2002: Episode 11 of Digimon Tamers airs in English for the first time.
14th
- 1999: Episode 36 of Digimon Adventure airs in Japan for the first time.
- 2002: Episode 12 of Digimon Frontier airs in English for the first time.
- 2014: Digimon All-Star Rumble is released in Europe and Australia.
15th
- 2002: Episode 13 of Digimon Frontier airs in English for the first time.
- 2002: Digimon World 2003 is released in Europe for the PlayStation.
16th
- 2010: Episode 16 of Digimon Xros Wars airs in Japan for the first time.
17th
- 2001: Episodes 20 and 21 of Digimon Tamers air in English for the first time.
- 2013: Episode 10 of Digimon Fusion airs in the United States of America for the first time.
18th
- 2000: Episodes 19, 20 and 21 of Digimon Adventure 02 air in English for the first time.
- 2001: Episode 33 of Digimon Tamers airs in Japan for the first time.
- 2002: Episode 14 of Digimon Frontier airs in English for the first time.
19th
- 2000: Episode 33 of Digimon Adventure 02 airs in Japan for the first time.
- 2002: Episode 15 of Digimon Frontier airs in English for the first time.
- 2006: Episode 32 of Digimon Savers airs in Japan for the first time.
- 2007: Episode 9 of Digimon Data Squad airs in English for the first time.
20th
- 1999: Episode 27 of Digimon Adventure airs in English for the first time.
- 2002: Episode 16 of Digimon Frontier airs in English for the first time.
- 2015: Episode 1 of Digimon Adventure tri. is streamed on Crunchyroll for the first time.
21st
- 1999: Episode 37 of Digimon Adventure airs in Japan for the first time.
- 2002: Episode 17 of Digimon Frontier airs in English for the first time.
- 2011: Chapter 17 of Digimon Xros Wars is published in Japan for the first time.
- 2015: Episode 1 of Digimon Adventure tri. is released on theaters in Japan.
- 2017: Digimon Story: Cyber Sleuth - Hacker's Memory (manga) is published in Japan for the first time.
22nd
- 2002: Episode 18 of Digimon Frontier airs in English for the first time.
- 2002: The single an Endless tale is released in Japan for the first time.
- 2019: Episode 1 of Digimon Adventure 20th Memorial Story is released in theaters in Japan for the first time.
23rd
- 2010: Episode 17 of Digimon Xros Wars airs in Japan for the first time.
24th
- 2001: Episode 22 of Digimon Tamers airs in English for the first time.
- 2002: Episode 33 of Digimon Frontier airs in Japan for the first time.
- 2013: Episode 11 of Digimon Fusion airs in the United States of America for the first time.
25th
- 2001: Episode 34 of Digimon Tamers airs in Japan for the first time.
26th
- 2000: Episode 34 of Digimon Adventure 02 airs in Japan for the first time.
- 2006: Episode 33 of Digimon Savers airs in Japan for the first time.
- 2007: Episode 10 of Digimon Data Squad airs in English for the first time.
27th
- 1999: Episode 28 of Digimon Adventure airs in English for the first time.
28th
- 1999: Episode 38 of Digimon Adventure airs in Japan for the first time.
29th
Nothing is currently known to have happened on this day.
30th
- 2006: Digimon Savers: Another Mission is released in Japan for the PlayStation 2.
- 2010: Episode 18 of Digimon Xros Wars airs in Japan for the first time.
- 2023: Digimon Adventure 02: The Beginning is released in Brazil.