Fanart Calendar
Other art tag lists: Art challenges, Art Calendar .
January:
Most notably: Lunar new year animals
Lunar new year animal costumes
Public Domain Day (1st)
Final Fantasy 7 day (31st)
February:
Most notably: Valentines and Lunar new year
Lunar new year animal costumes
Valentines day (14th) memes and costumes
The Legend of Zelda's anniversary (21st)
Pokemon day (27th)
The annual Snow Miku event in Hokkaido (mid to late feb, followed by a design competition some time afterwards)
March:
Hatsune Miku day (9th)
Mario day, super mario bros. (10th)
White Day (14th)
April:
Most notably: April Fool's day
April Fools' Day (1st)
International Children's Book day (2nd)
Kasane Teto's birthday (1st)
First Contact Day (Star Trek) (5th)
Fire Emblem's Anniversary (20th)
420 day (20th)
Walpurgisnacht (30th April - 1st May)
May:
Walpurgisnacht (30th April - 1st May)
Dracula Daily (May 3rd - November 7th)
Star Wars day (4th)
Chrom's Birthday/Celebrating that Fire Emblem lived (27th)
June:
Most notably: General summer themed pieces
Pride month
World Milk day (1st)
Yuri day (25th)
July:
August:
Smaugust (Smaug from the Hobbit)
Yaoi day/801 day (1st)
FFXIV Rising event (August 27th - September)
September:
Star Trek day (8th)
Cirno day (Touhou) (9th)
Hobbit day/Bilbo Baggins' Birthday (Tolkien's works) (22nd)
October:
Most notably: Halloween
Celebrating various Halloween adjacent franchises all month
"It's October 3rd" (Mean Girls day)
Full Metal Alchemist day (3rd)
Halloween (31st), memes and costumes
November:
No Nut November
N7 day (Mass Effect)(7th)
Pocky day/Pepero day/Pretz day (11/11)
December:
Most notably: Seasonal and New years outfits
"Almost Christmas" (Recurring Ace Attorney meme, 23rd or 24th)
Festivus (Seinfeld), Hogswatch (Discworld series), and other fictive holidays