Annual event owes its existence to fortuitous wordplay and appreciation of strips of exposed thigh.
Every October, Japan holds larger and larger Halloween celebrations, and in December, Christmas has long been part of its cultural landscape. However, Thanksgiving, at least in its American, celebrated-in-November form, has yet to catch on in Japan.
That causes a couple of problems, first and foremost that there’s one less reason to stuff yourself silly. What’s more, no Thanksgiving means no official kick-off for the Christmas shopping season. That means no Black Friday on which to snag great bargains, and by association, no Black Friday also means no Cyber Monday.
But there was still plenty of reason for Japanese Internet users to go online on Monday, November 28.
https://twitter.com/krkrakss/status/802899416264736768 https://twitter.com/ftmm_gz/status/799237130929086464最近メイクうすすぎ良くないな~ってお写真見て思いました。まつげつけた方がやっぱり写真は良いですね。
— 天使みゅ。4/1V初配信 (@miyu_ku) February 8, 2016
おやすみなさい⁺٩(ˊᗜˋ*)و#いいニーハイの日 pic.twitter.com/SeUYuSsCtl
Thanks to the vagaries of the Japanese language, the numerals 1, 2, and 8 can be pronounced i, ni, and hai, which means that one possible reading of “11-28” is “ii nihai,” which translates to “nice knee-high socks.”
▼ The nihai are looking pretty ii
https://twitter.com/bierobot1/status/798818405474189312おりじなる。ぺたり。#いいニーハイの日 pic.twitter.com/P7XmFBKUVY
— 天使みゅ。4/1V初配信 (@miyu_ku) February 8, 2016
いいニーハイの日?しきにゃん?ガーターついてるのはあり?#いいニーハイの日 pic.twitter.com/l0itk10fsR
— コスプレハロウィン (@syfizunebud) June 3, 2016
As such, it’s become a bit of an Internet tradition for cosplayers, models, and their fans to share pictures of knee-high socks on November 28.
https://twitter.com/rutoooo/status/803145185269989377#いいニーハイの日
— ましろ🍵🎀🐬 (@mashilo_) November 27, 2016
ということなのでましろも参加します(●´-` ●) 💙
ましちゃ総集編😎✌️️ pic.twitter.com/NMQavGupBL
https://twitter.com/kawasaki__aya/status/803111135977172992業界のニーハイってだいたいサイハイだけど…大好きだ!!#いいニーハイの日 pic.twitter.com/VAEELjmq6L
— 龍姫 (@xdestinydollx) November 28, 2016
Those who regularly observe Nice Knee-High Socks Day have largely settled into the consensus that, while not specifically mentioned in the 11-28/ii nihai wordplay, the day is really supposed to be about knee-high socks. Still, no one made a stink about the inclusion of a knee-high boot photo in this year’s festivities.
https://twitter.com/86bam86/status/803013218410999808So apparently, Nice Knee-High Socks Day is capable of inspiring the same sort of egalitarian goodwill as other, more high-minded holidays.
Source: IT Media
Featured image: Twitter/@ miyu_ku

Japanese Twitter users celebrate Knee-High Socks Day with flirty and freaky snapshots
Stylish knee-high wetsuit socks from China are the newest fashion accessory for divers
Look cool at the pool with these new waterproof over-knee socks
Japanese swimsuit models and cosplayers celebrate Bikini Day 2017【Photos】
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Silicone testicle covers banned from Japanese sauna following cups being left behind and on shelves
Studio Ghibli now sells Ursula’s backpack from Kiki’s Delivery Service at its anime shop in Japan
Taste-testing Japan’s real-world Dragon Balls and Senzu Beans at Marugame Seimen
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
7-Eleven Japan now sells bagels…cooked in bamboo steamers
Is Tokyo Station’s startlingly expensive wagyu bento boxed lunch worth its high price?[Taste test]
Foreign tourists in Japan will get free Shinkansen tickets to promote regional tourism
Free food awaits those who finish “Spicy Mapo Tofu of Hell,” but it isn’t easy
Can we win a PS5 from this premium 2,000-yen gacha machine in Japan?
One Piece creator has hidden secret of anime treasure’s identity in chest at bottom of real-world ocean
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japanese restaurant chain serves Dragon Ball donuts and Senzu Beans this spring
Live-action One Piece’s Luffy teaches Sesame Street’s Elmo a Japanese word for friendship[Video]
Sakura Festival in Chiyoda mixes illuminations, boats, music, and Rilakkuma in the heart of Tokyo
Japan’s craziest burger chain takes menchi katsu to new extreme levels
Viral Japanese cheesecake from Osaka has a lesser known rival called Aunt Wanda
Japan’s newest Shinkansen has no seats…or passengers [Video]
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Foreigners accounting for over 80 percent of off-course skiers needing rescue in Japan’s Hokkaido
Super-salty pizza sends six kids to the hospital in Japan, linguistics blamed
Starbucks Japan unveils new sakura Frappuccino for cherry blossom season 2026
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Take a trip to Japan’s Dododo Land, the most irritating place on Earth
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Underwater Knee High Girls appear in new exhibition celebrating soft thighs and kaiju monsters
The Japanese Internet celebrates Nice Boobs Day 2017
Cosplayers and models share selfies to celebrate Bikini Day in Japan
Japanese high school girls’ culture festival celebrates the art of student cosplay 【Photos】
All-Japan Gravure Awards salute Japan’s best swimwear and cosplay models【Photos】
Snuggly ferret makes adorably comfy beds from random household objects, especially loves socks
Busty cosplayer makes Japanese dreams come true with super real Super Sonico cosplay 【Photos】
When you fall in love with a cosplayer【Photos】
Japanese cosplay model shows off thighs, but fans’ eyes are on her Nintendo 64 controller grip