Miku Day

Miku Day

Part of a series on Hatsune Miku / Vocaloid. [View Related Entries]

Updated Mar 09, 2021 at 03:43AM EST by shevyrolet.

Added Mar 09, 2020 at 12:50PM EDT by mona_jpn.

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Miku Day (Japanese: ミクの日, Miku no Hi) is an annual day fans of the virtual diva Hatsune Miku celebrate the character by posting fan art and tributes of her. It takes place on March 9th.


As well as "Good Knee-high Socks Day" and other unofficial Japanese holidays, Miku Day is designated by Japanese wordplay which reads "3" as Mi and "9" as Ku. In similar vein, "39" can be also read as "San(3)Kyu(9) = Thank You" and "San(3)Ku(9) = Thank".


According to Pixiv Encyclopedia[1][2] and Nico Nico Pedia[3], some Japanese Miku fans had already called March 9th Miku Day in 2008, the year following her initial debut, because of the wordplay described above. A few of Pixiv and niconico Douga (niconico) users also started posting their own illustrations and videos to celebrate this unofficial anniversary in that year. Then, it grew up to be recognized as the official one, when Crypton Future Media and Sega held Miku's first solo concert "39's Giving Day" on the day in 2010.

S39SGMngDay Thanks! Froject DIVA presents 初音ミク·ソロコンサート EAEAE初音で 2010年3月9日 開催決定! # : EDODERAR A/SEGA 特別協力:クリフトン·フューチャー·メディア MEED -Project DIVA- UTHR3
Official announcement of the first "39's("MIku's" & "Thanks") Giving Day" in 2010

Throughout 2010s, more than 12,000 illustrations had been posted to the illustrators community for celebration.[4] It also came to be celebrated on niconico[5][6], Twitter[7], Instagram[8], DeviantArt[9] and TikTok[10] among not only Japanese fans but also non-Japanese fans under the English tag "MikuDay."


March 9th is, too, recognized among anime fans as the anniversary day for one of the iconic mechs in the Gundam series, Zaku[11], because the day can be read as "Za(3)Ku(9)" as well. Hence, fan art posted that day will sometimes feature both of the media franchises.

ull march9 ヨ/9

Various Examples

Her songs, forever HATSUNE MIKU 10th anniversary and and HAPPY MIKU'S DAY 2017 3/9

Search Interest

External References

[1] Pixiv Encyclopedia – ミクの日 (Japanese)

[2] Pixiv Encyclopedia – 3月9日はミクの日 (さんがつここのかはみくのひ) (Japanese)

[3] Nico Nico Pedia – 3月9日はミクの日 (Japanese)

[4] Pixiv – Search results for the tag ミクの日

[5] Nico Nico Seiga – Search results for the tags ミクの日 and 3月9日はミクの日

[6] niconico Douga – Search results for the tag 3月9日はミクの日

[7] Twitter – Search results for the hashtags #ミクの日 and #MikuDay

[8] Instagram – Search results for the hashtags #ミクの日 and #mikuday

[9] Deviantart – mikuday

[10] TikTok – #mikuday

[11] Wikipedia – Zaku

Recent Videos 9 total

Recent Images 19 total

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