January • February • March • April • May • June • July • August • September • October • November • December
1st
- 2001: Episode 14 of Digimon Tamers airs in Japan for the first time.
- 2010: Digimon Story: Lost Evolution is released in Japan for the Nintendo DS.
- 2021: Philece Sampler dies
2nd
- 2000: Episode 14 of Digimon Adventure 02 airs in Japan for the first time.
- 2006: Episode 13 of Digimon Savers airs in Japan for the first time.
- 2014: Gurihiru share Digimon Crusader sketches on their Tumblr.
3rd
Nothing is currently known to have happened on this day.
4th
- 1999: Episode 18 of Digimon Adventure airs in Japan for the first time.
- 2002: Digimon World 3 is released in Japan for the PlayStation.
5th
- 2002: Digimon Digital Card Battle is released in Europe for the PlayStation.
6th
- 2001: Digimon World is released in PAL for the PlayStation.
- 2003: Episode 43 of Digimon Frontier airs in English for the first time.
- 2010: Episode 1 of Digimon Xros Wars airs in Japan for the first time.
7th
- 2001: Digimon Tamers: Digimon Medley is released in Japan for the WonderSwan Color.
- 2003: Episode 44 of Digimon Frontier airs in English for the first time.
- 2008: Episode 35 of Digimon Data Squad airs in English for the first time.
8th
- 2000: The movie Digimon Adventure 02: Digimon Hurricane Landing!!/Transcendent Evolution!! The Golden Digimentals is released in Japan.
- 2001: Episode 15 of Digimon Tamers airs in Japan for the first time.
- 2003: Episode 45 of Digimon Frontier airs in English for the first time.
9th
- 2003: Episode 46 of Digimon Frontier airs in English for the first time.
- 2006: Episode 14 of Digimon Savers airs in Japan for the first time.
10th
- 2003: Episode 47 of Digimon Frontier airs in English for the first time.
11th
- 1999: Episode 19 of Digimon Adventure airs in Japan for the first time.
- 2003: Episode 48 of Digimon Frontier airs in English for the first time.
12th
- 2001: Digimon Tamers: Digimon Medley is released in Japan for the WonderSwan Color.
- 2002: Digimon Rumble Arena is released in the PAL region for the PlayStation.
13th
- 2003: Episode 49 of Digimon Frontier airs in English for the first time.
- 2010: Episode 2 of Digimon Xros Wars airs in Japan for the first time.
14th
- 2001: The movie Digimon Tamers: The Adventurers' Battle is released in Japan.
- 2002: Episode 14 of Digimon Frontier airs in Japan for the first time.
- 2003: Episode 50 of Digimon Frontier airs in English for the first time.
- 2008: Episode 36 of Digimon Data Squad airs in English for the first time.
15th
- 2001: Episode 16 of Digimon Tamers airs in Japan for the first time.
16th
- 2000: Episode 15 of Digimon Adventure 02 airs in Japan for the first time.
17th
Nothing is currently known to have happened on this day.
18th
Nothing is currently known to have happened on this day.
19th
- 2012: Digimon World Re:Digitize is released in Japan for the PlayStation Portable.
20th
- 2002: The movie Digimon Frontier: Revival of the Ancient Digimon is released in Japan.
- 2010: Episode 3 of Digimon Xros Wars airs in Japan for the first time.
- 2014: αρχιμεδεs posts the desin sheets for Galacticmon, Destromon, Snatchmon, and Vemmon on his Pixiv.
21st
- 2002: Episode 15 of Digimon Frontier airs in Japan for the first time.
- 2008: Episode 37 of Digimon Data Squad airs in English for the first time.
- 2010: Chapter 2 of Digimon Xros Wars is published in Japan for the first time.
- 2011: Chapter 13 of Digimon Xros Wars os published in Japan for the first time.
22nd
Nothing is currently known to have happened on this day.
23rd
- 2000: Episode 16 of Digimon Adventure 02 airs in Japan for the first time.
- 2007: Episode 15 of Digimon Savers airs in Japan for the first time.
24th
Nothing is currently known to have happened on this day.
25th
- 1999: Episode 20 of Digimon Adventure airs in Japan for the first time.
26th
Nothing is currently known to have happened on this day.
27th
- 2000: Digimon World 2 is released in Japan for the PlayStation.
- 2010: Episode 4 of Digimon Xros Wars airs in Japan for the first time.
28th
- 2002: Episode 16 of Digimon Frontier airs in Japan for the first time.
- 2008: Episode 38 of Digimon Data Squad airs in English for the first time.
29th
- 2001: Episode 17 of Digimon Tamers airs in Japan for the first time.
- 2004: Digimon Battle Chronicle is released in Japan for the PlayStation 2 and the Nintendo GameCube.
30th
- 2000: Episode 17 of Digimon Adventure 02 airs in Japan for the first time.
- 2008: Episode 34 of Digimon Data Squad airs in English for the first time.
- 2018: Episode 5 of Digimon Adventure tri. is released on DVD in the United Kingdom.
31st
Nothing is currently known to have happened on this day.