2016
First observance
National Call Your Doctor Day
Bright Pink and registry history identify the 2016 launch date.
Evergreen date guide
What is celebrated on June 21?
See the observances and verified observance-history milestones attached to June 21. Each observance keeps its own source and date details.
Verified history
Today in history →On this date in observance history
Selected observance milestones connected to this date, based on reviewed sources.
2015
First observance
International Day of Yoga
United Nations records identify 21 June 2015 as the first International Day of Yoga.
2014
Institutional decision
National Selfie Day
The founder page states that National Selfie Day was created on June 21, 2014.
2014
First observance
World Giraffe Day
GCF conservation material states that World Giraffe Day was established/launched in 2014 and identifies 2015 as the second edition.
2007
Institutional decision
National Day
The official legal record dates Law No. 11 of 2007 to 21 June 2007.
2006
First observance
World Hydrography Day
IHO Circular Letter 08/2006 describes 2006 as the first year of World Hydrography Day celebrations and directs celebration on 21 June.
2004
First observance
Go Skateboarding Day
IASC states that the holiday began June 21, 2004, and contemporary coverage described that date as the first annual celebration.
1982
Later action
National Inventors’ Day
Designated and proclaimed February 11, 1983 as National Inventors’ Day for that specific year.
Curated global anchors
See the collection →Major global guides on June 21
A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.
Source-backedFixed AnnualIn-depth guide
International Day of Yoga
A/RES/69/131
Reviewed depth
Other in-depth guides on June 21
Source-backedFixed AnnualIn-depth guide
Año Nuevo Andino Amazónico y del Chaco
Bolivia’s Supreme Decree No. 173 (2009) made June 21 an immovable nationwide holiday for the winter solstice, while Law No. 1128 (2018) declares June 21 of each year the Año Nuevo Andino Am…
Source-backedRule Based AnnualIn-depth guide
Father’s Day — United States statutory observance
36 U.S.C. §109 designates the third Sunday in June as Father’s Day; its historical notes trace the federal designation to Public Law 92-278 of 24 April 1972, while Library of Congress mater…
Source-backedFixed AnnualIn-depth guide
Go Skateboarding Day
IASC press releases describe Go Skateboarding Day as the official annual holiday of skateboarding, observed worldwide on June 21.
Source-backedFixed AnnualIn-depth guide
International Day of the Celebration of the Solstice
A/RES/73/300
Source-backedFixed AnnualIn-depth guide
Martyrs’ Day (Togo)
The official Togolese government site states that Togo commemorates Martyrs’ Day every 21 June in memory of those killed in the independence struggle and confirms that the day is a public h…
Source-backedFixed AnnualIn-depth guide
National Arizona Day
National Day Calendar lists National Arizona Day on 21 June as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Union.…
Explore the mix
All topics →Topics represented on June 21
17 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
Año Nuevo Andino Amazónico y del Chaco
Bolivia’s Supreme Decree No. 173 (2009) made June 21 an immovable nationwide holiday for the winter solstice, while Law No. 1128 (2018) declares June 21 of each year the Año Nuevo Andino Am…
Source-backedRule Based AnnualIn-depth guide
Father’s Day — United States statutory observance
36 U.S.C. §109 designates the third Sunday in June as Father’s Day; its historical notes trace the federal designation to Public Law 92-278 of 24 April 1972, while Library of Congress mater…
Source-backedFixed AnnualIn-depth guide
Go Skateboarding Day
IASC press releases describe Go Skateboarding Day as the official annual holiday of skateboarding, observed worldwide on June 21.
Source-backedFixed AnnualIn-depth guide
International Day of the Celebration of the Solstice
A/RES/73/300
Source-backedFixed AnnualIn-depth guide
International Day of Yoga
A/RES/69/131
Source-backedFixed AnnualIn-depth guide
Martyrs’ Day (Togo)
The official Togolese government site states that Togo commemorates Martyrs’ Day every 21 June in memory of those killed in the independence struggle and confirms that the day is a public h…
Source-backedFixed AnnualIn-depth guide
National Arizona Day
National Day Calendar lists National Arizona Day on 21 June as part of its creator-defined National State Days series, introduced in 2017 to honor states in the order they joined the Union.…
Source-backedFixed AnnualIn-depth guide
National Daylight Appreciation Day
Published event material identifies Solatube International as creator and Solatube describes itself as sponsor of the annual June 21 observance. NASA/NOAA material is used to separate the f…
Source-backedFixed AnnualIn-depth guide
National Indigenous Peoples Day (formerly National Aboriginal Day)
Canadian Heritage uses National Indigenous Peoples Day for 21 June; archived federal material documents the earlier National Aboriginal Day name, so the public page title is retained as a l…
Source-backedFixed AnnualIn-depth guide
National Selfie Day
The official National Selfie Day site states that DJ Rick McNeely created National Selfie Day on June 21, 2014 and identifies him as the founder.
Source-backedFixed AnnualIn-depth guide
National Wagyu Day
Steve Haddadin’s official National Wagyu Day site identifies him as founder and June 21 as the date. National Day Calendar records that Haddadin collaborated with it in 2024 to proclaim the…
Source-backedFixed AnnualIn-depth guide
Shades for Migraine
The Association of Migraine Disorders states that it founded Shades for Migraine in 2017, describes it as a global awareness campaign and says it hosts the international migraine-awareness…
Source-backedRule Based AnnualIn-depth guide
Take Your Cat To Work Day®
Pet Sitters International says it created Take Your Cat To Work Day and its 2026 calendar places it on Monday, June 22, opening Take Your Pet To Work Week, which ends with Take Your Dog To…
Source-backedFixed AnnualIn-depth guide
World Giraffe Day
The Giraffe Conservation Foundation states that it initiated World Giraffe Day, holds it annually on 21 June, and chose the solstice date to pair the tallest animal with the longest day or…
Source-backedFixed AnnualIn-depth guide
World Humanist Day
Humanists International states that World Humanist Day is celebrated every year on 21 June and traces its organized observance to the 1980s.
Source-backedFixed AnnualIn-depth guide
World Hydrography Day
The International Hydrographic Organization states that World Hydrography Day is celebrated on 21 June; its 2026 page confirms 21 June 2026.
Source-backedFixed AnnualIn-depth guide
World Motorcycle Day
The Association of Biking Community India states that its flagship World Motorcycle Day is celebrated every year on June 21.
How dates are selected
This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.
Read the methodology →