vtuber holidays
On certain days, you might notice many artists drawing the same theme. This can result from a more recognized holiday such as Christmas or Valentine's day. It can also be a more niche holiday that the internet community has assigned meaning, often based on wordplay in Japanese.
Below is a list of such holidays so you can prepare for them in advance, for example by commissioning art ahead of time. The common social media tags are also included.
今日は何の日
https://prtimes.jp/magazine/today/
January
1 - New Year
February
2 - Twintails Day (See also November 22)
#ツインテールの日
2 - Good Couples (See also April 22, Nov 22)
#夫婦の日
10 - Futon Day (Also October 10)
#ふとんの日
10 - Knit Day
#ニットの日
Artists draw characters in knit clothes, such as sweaters, scarves, and hats.
10 - Thighs Day (See also November 20)
#太ももの日
12 - Darwin's Day (Also November 24)
#ダーウィンの日
Artists draw a series of images of something from primitive to advanced.
14 - Valentine's Day
#バレンタイン / #グラスワンダー
17 - Day of Angel's Whispers
#天使のささやきの日 / #天使の囁き記念日
18 - Good Night's Sleep Day
#安眠の日
18 - Airmail Day
#エアメールの日
On this day in 1911, the world's first mail was delivered by airplane.
22 - Ninja Day
忍者の日
Based on the reading of the number 2 as "ni" in Japanese and ninjas stereotyped as making the same sound, 2/22 is Ninja Day.
22 - Cat Day
#猫の日
Like Ninja Day, smiling cats in Japan also have an onomatopoeic "ni" sound.
March
April
22 - couples (Also Feb 2, Nov 22)
#よい夫婦の日
May
June
July
August
8 - Underwear Day / Panties Day
#パンツの日
8 (pan), 2 (two, sounds like tsu), and underwear are called pantsu in Japanese.
September
October
10 - Futon Day (Also February 10)
#ふとんの日
31 - Halloween
November
November is full of "good ○○" days. See as reference https://x.com/MisakiPrimrose/status/794758649977548800/photo/1
1 - Dog Day
#犬の日
It was established based on the sound of a dog barking, "Wan Wan Wan."
2 - Tights Day
#いいタイツの日 / #タイツの日
The tights are knitted one leg at a time and then sewn together. The number 11 is a pair of 11 pairs, so the number was established.
3 - Good Birth Day
#いいお産の日
11 (good), 03 (osan, giving birth)
4 - Nice Butt Day
#いいお尻の日 / #いいおしりの日
11 (good) 04 (buttocks) is a play on words. The first of three "nice butt" days in November.
4 - Good Oshi Day
#いい推しの日
11 (good), 04 (oshi) (When is this tag used?)
5 - Good Man's Day
#いい男の日
It is a play on words of 11 (good) and 05 (man). It was established by Shiseido. By the way, Good Woman Day is November 7th (good woman).
5 - Matchmaking Day
#縁結びの日
Based on wordplay. Shrines around the country that worship the god of matchmaking sometimes hold events to coincide with Matchmaking Day. Art on this day can feature the red thread of fate.
7 - Good Tummy Day
#いいおなかの日
#いい推しの日
11 (good) 07 (belly)
7 - Good Woman's Day
#いい女の日
11 (good) 07 (onna, woman)
8 - Nice Breasts Day
#いいおっぱいの日
A play on words between 11 (good) and 08 (boobs).
9 - 119 Day
#119番の日
Established by the Fire and Disaster Management Agency in 1987, named after the emergency call number 119 for firefighting.
Artists can draw cosplay of public crisis workers, such as firefighters and nurses.
10 - Toilet Day
#トイレの日
A play on words of 11 (ii) and 10 (toilet). Established by the Japan Toilet Association in 1986.
11 - Pocky Day
#PockyDay
#ポッキーの日
#ポッキの日 (possibly a misspelling?)
The origin of the name is that the number 1 looks like a Pocky.
12 - Good Hips Day
#いいヒップの日
A pun on 11 (nice) and 12 (hip). The second Butt Day in November!
13 - Good Knee Day
#いいひざの日
#いい膝の日
A play on words of 11 (good) and 13 (knee). Established by Zeria Pharmaceuticals.
16 - Good Color Day
#いいいろの日
#いい色の日
A play on words: 11 (good) and 16 (color)
17 - Japanese Underwear Day / Nice Underwear Day
#日本製肌着の日
#いいインナーの日
A play on words for 11 (two lines = Japan) and 17 (inner), or 11 (nice) and 17 (inner)
19 - Good Breath Day
#いい息の日
The play on words is 11 (ii) and 19 (iki)
Art focuses on breath
19 - Good Parenting Day / Family Day
#いい育児の日
#家族の日
20 - Fur Day
#毛皮の日
A play on words: 11 (ii, good) 20 (fua, fur)
Art might feature small animals, furries, and fur coats
20 - Good Thighs Day (See also February 10)
#いい太ももの日
#いいふとももの日
#いいふとともの日
A day to appreciate thighs.
22 - Good Couples Day (See also February 2, April 22)
#いい夫婦の日 / #良い夫婦の日
It is a play on words of 11 (ii) and 22 (fuufu, couple). It is a widely known anniversary, and many people register their marriage on this day.
22 - Good Twintails Day (See also February 2)
11 (good), 22 (two for the twin tails)
#いいツインテールの日
24 - Evolutionary Day (Also February 12)
#進化の日
The first edition of Darwin's "Origin of Species," which sparked the theory of biological evolution, was published on this day in 1859.
26 - Good Bath Day
#いい風呂の日 / #いいおふろの日
The play on words is 11 (ii) and 26 (furo, bath).
28 - Good Knee-high Day
#いいニーハイの日
A play on words between 11 (good) and 28 (knee-high).
While not technically "Good Thighs Day", art focusing on knee-highs often also highlights the thighs.
29 - Good Meat Day / Good Muscles Day
#いいにくの日 / #いい肉の日
It is a play on words of 11 (good) and 29 (niku, meat).
Art this day can focus on muscles, or on areas of the body such as the thighs or breasts, or on food meat.
30 - Good Butt Day
#いいおしりの日 / #いいお尻の日
The last day of November (good) was considered to be "Buttocks Day". The third "Buttocks Day" in November!
December
25 - Christmas
Below is a list of such holidays so you can prepare for them in advance, for example by commissioning art ahead of time. The common social media tags are also included.
今日は何の日
https://prtimes.jp/magazine/today/
January
1 - New Year
February
2 - Twintails Day (See also November 22)
#ツインテールの日
2 - Good Couples (See also April 22, Nov 22)
#夫婦の日
10 - Futon Day (Also October 10)
#ふとんの日
10 - Knit Day
#ニットの日
Artists draw characters in knit clothes, such as sweaters, scarves, and hats.
10 - Thighs Day (See also November 20)
#太ももの日
12 - Darwin's Day (Also November 24)
#ダーウィンの日
Artists draw a series of images of something from primitive to advanced.
14 - Valentine's Day
#バレンタイン / #グラスワンダー
17 - Day of Angel's Whispers
#天使のささやきの日 / #天使の囁き記念日
18 - Good Night's Sleep Day
#安眠の日
18 - Airmail Day
#エアメールの日
On this day in 1911, the world's first mail was delivered by airplane.
22 - Ninja Day
忍者の日
Based on the reading of the number 2 as "ni" in Japanese and ninjas stereotyped as making the same sound, 2/22 is Ninja Day.
22 - Cat Day
#猫の日
Like Ninja Day, smiling cats in Japan also have an onomatopoeic "ni" sound.
March
April
22 - couples (Also Feb 2, Nov 22)
#よい夫婦の日
May
June
July
August
8 - Underwear Day / Panties Day
#パンツの日
8 (pan), 2 (two, sounds like tsu), and underwear are called pantsu in Japanese.
September
October
10 - Futon Day (Also February 10)
#ふとんの日
31 - Halloween
November
November is full of "good ○○" days. See as reference https://x.com/MisakiPrimrose/status/794758649977548800/photo/1
1 - Dog Day
#犬の日
It was established based on the sound of a dog barking, "Wan Wan Wan."
2 - Tights Day
#いいタイツの日 / #タイツの日
The tights are knitted one leg at a time and then sewn together. The number 11 is a pair of 11 pairs, so the number was established.
3 - Good Birth Day
#いいお産の日
11 (good), 03 (osan, giving birth)
4 - Nice Butt Day
#いいお尻の日 / #いいおしりの日
11 (good) 04 (buttocks) is a play on words. The first of three "nice butt" days in November.
4 - Good Oshi Day
#いい推しの日
11 (good), 04 (oshi) (When is this tag used?)
5 - Good Man's Day
#いい男の日
It is a play on words of 11 (good) and 05 (man). It was established by Shiseido. By the way, Good Woman Day is November 7th (good woman).
5 - Matchmaking Day
#縁結びの日
Based on wordplay. Shrines around the country that worship the god of matchmaking sometimes hold events to coincide with Matchmaking Day. Art on this day can feature the red thread of fate.
7 - Good Tummy Day
#いいおなかの日
#いい推しの日
11 (good) 07 (belly)
7 - Good Woman's Day
#いい女の日
11 (good) 07 (onna, woman)
8 - Nice Breasts Day
#いいおっぱいの日
A play on words between 11 (good) and 08 (boobs).
9 - 119 Day
#119番の日
Established by the Fire and Disaster Management Agency in 1987, named after the emergency call number 119 for firefighting.
Artists can draw cosplay of public crisis workers, such as firefighters and nurses.
10 - Toilet Day
#トイレの日
A play on words of 11 (ii) and 10 (toilet). Established by the Japan Toilet Association in 1986.
11 - Pocky Day
#PockyDay
#ポッキーの日
#ポッキの日 (possibly a misspelling?)
The origin of the name is that the number 1 looks like a Pocky.
12 - Good Hips Day
#いいヒップの日
A pun on 11 (nice) and 12 (hip). The second Butt Day in November!
13 - Good Knee Day
#いいひざの日
#いい膝の日
A play on words of 11 (good) and 13 (knee). Established by Zeria Pharmaceuticals.
16 - Good Color Day
#いいいろの日
#いい色の日
A play on words: 11 (good) and 16 (color)
17 - Japanese Underwear Day / Nice Underwear Day
#日本製肌着の日
#いいインナーの日
A play on words for 11 (two lines = Japan) and 17 (inner), or 11 (nice) and 17 (inner)
19 - Good Breath Day
#いい息の日
The play on words is 11 (ii) and 19 (iki)
Art focuses on breath
19 - Good Parenting Day / Family Day
#いい育児の日
#家族の日
20 - Fur Day
#毛皮の日
A play on words: 11 (ii, good) 20 (fua, fur)
Art might feature small animals, furries, and fur coats
20 - Good Thighs Day (See also February 10)
#いい太ももの日
#いいふとももの日
#いいふとともの日
A day to appreciate thighs.
22 - Good Couples Day (See also February 2, April 22)
#いい夫婦の日 / #良い夫婦の日
It is a play on words of 11 (ii) and 22 (fuufu, couple). It is a widely known anniversary, and many people register their marriage on this day.
22 - Good Twintails Day (See also February 2)
11 (good), 22 (two for the twin tails)
#いいツインテールの日
24 - Evolutionary Day (Also February 12)
#進化の日
The first edition of Darwin's "Origin of Species," which sparked the theory of biological evolution, was published on this day in 1859.
26 - Good Bath Day
#いい風呂の日 / #いいおふろの日
The play on words is 11 (ii) and 26 (furo, bath).
28 - Good Knee-high Day
#いいニーハイの日
A play on words between 11 (good) and 28 (knee-high).
While not technically "Good Thighs Day", art focusing on knee-highs often also highlights the thighs.
29 - Good Meat Day / Good Muscles Day
#いいにくの日 / #いい肉の日
It is a play on words of 11 (good) and 29 (niku, meat).
Art this day can focus on muscles, or on areas of the body such as the thighs or breasts, or on food meat.
30 - Good Butt Day
#いいおしりの日 / #いいお尻の日
The last day of November (good) was considered to be "Buttocks Day". The third "Buttocks Day" in November!
December
25 - Christmas