January • February • March • April • May • June • July • August • September • October • November • December

1st

• 1999: Episode 21 of Digimon Adventure airs in Japan for the first time.

2nd

Nothing is currently known to have happened on this day.

3rd

• 2000: Digimon Adventure 02: Tag Tamers is released in Japan for the WonderSwan.
• 2002: Digital Monster D-Project is released in Japan for the WonderSwan Color.
• 2010: Episode 5 of Digimon Xros Wars airs in Japan for the first time.

4th

• 2002: Episode 17 of Digimon Frontier airs in Japan for the first time.
• 2008: Episode 39 of Digimon Data Squad airs in English for the first time.

5th

• 2001: Episode 18 of Digimon Tamers airs in Japan for the first time.
• 2005: The movie Revenge of Diaboromon airs in English for the first time.

6th

• 2000: Episode 18 of Digimon Adventure 02 airs in Japan for the first time.
• 2006: Episode 17 of Digimon Savers airs in Japan for the first time.

7th

Nothing is currently known to have happened on this day.

8th

• 1999: Episode 22 of Digimon Adventure airs in Japan for the first time.

9th

Nothing is currently known to have happened on this day.

10th

• 2010: Episode 6 of Digimon Xros Wars airs in Japan for the first time.

11th

• 2002: Episode 18 of Digimon Frontier airs in Japan for the first time.
• 2008: Episode 40 of Digimon Data Squad airs in English for the first time.

12th

• 2001: Episode 19 of Digimon Tamers airs in Japan for the first time.

13th

• 2000: Episode 19 of Digimon Adventure 02 airs in Japan for the first time.
• 2006: Episode 18 of Digimon Savers airs in Japan for the first time.

14th

• 1999: Episode 1 of Digimon Adventure airs in English for the first time.

15th

• 1999: Episode 23 of Digimon Adventure airs in Japan for the first time.

16th

Nothing is currently known to have happened on this day.

17th

• 2010: Episode 7 of Digimon Xros Wars airs in Japan for the first time.

18th

• 2002: Episode 19 of Digimon Frontier airs in Japan for the first time.
• 2008: Episode 41 of Digimon Data Squad airs in English for the first time.

19th

• 2000: Episodes 1 and 2 of Digimon Adventure 02 air in English for the first time.
• 2001: Episode 20 of Digimon Tamers airs in Japan for the first time.

20th

• 2000: Episode 20 of Digimon Adventure 02 airs in Japan for the first time.
• 2006: Episode 19 of Digimon Savers airs in Japan for the first time.

21st

• 1999: Episode 2 of Digimon Adventure airs in English for the first time.
• 1999: Chapter 10 of Digimon Adventure V-Tamer 01 is published in Japan for the first time.
• 2000: Chapter 22 of Digimon Adventure V-Tamer 01 is published in Japan for the first time.
• 2001: Chapter 34 of Digimon Adventure V-Tamer 01 is published in Japan for the first time.
• 2002: Chapter 46 of Digimon Adventure V-Tamer 01 is published in Japan for the first time.
• 2003: Chapter 58 of Digimon Adventure V-Tamer 01 is published in Japan for the first time.
• 2010: Chapter 3 of Digimon Xros Wars is published in Japan for the first time.
• 2011: Episode 49 of Digimon Xros Wars airs in Japan for the first time.
• 2011: Chapter 14 of Digimon Xros Wars is published in Japan for the first time.

22nd

• 1999: Episode 24 of Digimon Adventure airs in Japanese for the first time.
• 2002: The album Digimon Frontier: Uta to Ongaku Shuu is released in Japan for the first time.

23rd

Nothing is currently known to have happened on this day.

24th

• 2010: Episode 8 of Digimon Xros Wars airs in Japan for the first time.

25th

• 2002: Episode 20 of Digimon Frontier airs in Japan for the first time.

26th

• 2000: Episodes 3 and 4 of Digimon Adventure 02 air in English for the first time.
• 2001: Episode 21 of Digimon Tamers airs in Japan for the first time.
• 2008: Digimon World Championship is released in North America for the Nintendo DS.

27th

• 2000: Episode 21 of Digimon Adventure 02 airs in Japanese for the first time.
• 2004: Digimon Battle Spirit 2 is released in Europe for the Game Boy Advance.
• 2006: Episode 20 of Digimon Savers airs in Japanese for the first time.

28th

• 1999: Episode 3 of Digimon Adventure airs in English for the first time.

29th

• 1999: Episode 25 of Digimon Adventure airs in Japan for the first time.

30th

Nothing is currently known to have happened on this day.

31st

• 2010: Episode 9 of Digimon Xros Wars airs in Japan for the first time.