2,411 researched observances. Search for a specific name or known alternate name.
International Council of Design identifies International Design Day as the current name, held 27 April to commemorate the Council’s 1963 founding, and says the event was celebrated as World…
WalkMe first-party material documents DAP Professionals Day usage in July 2020 and says it was established in 2020; a 27 July 2022 company announcement then formally institutionalized the a…
Organizer-side launch material describes April 16 as an annual documentary observance beginning in 2026, and current calendar coverage likewise specifies April 16 every year.
The official International Doodle Dog Day site states that doodle dog lovers celebrate every year on May 1 and identifies Jeannie North as the founder.
The Studebaker Drivers Club identifies International Drive Your Studebaker Day as an official SDC event held on the second Saturday in September and lists 12 September for 2026.
Meryl Yourish’s original 1 March 2003 archive designates March 15 as International Eat an Animal for PETA Day; the 2004 archive calls the next occurrence second annual and later creator pos…
The Books2Eat creator site identifies Judith A. Hoffberg and Béatrice Coron as the creators and explains the April 1 date for the International Edible Book Festival.
Environmental-education institutions mark January 26 as International/World Environmental Education Day. The evidence supports the recurring date but is not used to claim a current UN-desig…
International Bureau for Epilepsy (IBE) and International League Against Epilepsy (ILAE)
A/RES/74/142
Fiji Parliament’s 13 March 2025 Hansard states that International Every Girl Wins Day is celebrated annually on March 13 and was established in 2019 by Every Girl Wins Institute.
International Fact-Checking Network (IFCN) at Poynter
FASD United’s 2026 awareness-month material states that September 9 is International FASD Awareness Day each year and frames it around awareness, understanding, support and systems change.
FND Hope International documents recurring International FND Awareness Day campaigns on 13 April, including the fifth annual edition in 2017 and sixth annual edition in 2018; current FND Ho…
UNESCO and the Organisation internationale de la Francophonie identify March 20 as International Francophonie Day. The date commemorates the creation of the Agency for Cultural and Technica…
Geocaching HQ first-party history identifies August 20, 2011 as the first International Geocaching Day and states that it is now celebrated every third Saturday in August. Current official…
Proclaimed by UNESCO General Conference in 2021
Grenache Association first-party history says International Grenache Day was launched in 2010 after the first International Grenache Symposium and is now held annually on the third Friday o…
The International Guide Dog Federation states that International Guide Dog Day is celebrated on the last Wednesday in April each year and raises awareness of guide-dog services and their ro…
The HER Foundation’s 2026 campaign page states that May 15 is International HG Awareness Day.
ISAR states it created International Homeless Animals’ Day in 1992 and observes it annually on the third Saturday in August; the 2026 date is August 15.
A/RES/60/209
Creator and professional-profile evidence identifies Stuart McNamara as creator, with conception in 2016; a Galway Town Hall Theatre programme documents the launch in March 2017, while curr…
UNESCO 36 C/Resolution 39
The Left-Handers Club states that it launched International Left-Handers Day on 13 August 1992 and continues to identify August 13 as the annual observance date.
The RNLI identifies July 31 as International Lifeguard Appreciation Day in its 2026 anniversary materials and news releases.
UNESCO 14 C/Resolution 1.441
The Louie Louie advocacy/fan community documents International Louie Louie Day and its April 11 tradition, developed through the Louie Louie Advocacy and Music Appreciation Society ecosyste…
Cornish Radio Amateur Club first-party material verifies its current administration of International Marconi Day, a 24-hour annual amateur-radio event usually held on the Saturday closest t…
CDC and NIH recognize May 12 as an international ME/CFS awareness date; May12.org traces the broader May 12 CIND awareness movement to Thomas Hennessy Jr. and RESCIND in 1992. This record i…
The Medical Science Liaison Society identifies 27 March as International MSL Day, states that the first annual activities began on 27 March 2020, and explains that March 27 was chosen becau…
The International Men’s Day organization states that the observance is marked each year on November 19 and confirms the 2026 edition and theme.
A/RES/55/93
A/RES/76/76
A/RES/63/278
A/RES/56/262
A/RES/57/245
World Forum Foundation / Nature Action Collaborative for Children
International Music Council (IMC)
Minnesota government information identifies July 14 as International Non-Binary People's Day and notes it is not a federal or state-recognized holiday; Snohomish County describes it as obse…
Orangutan Foundation identifies International Orangutan Day on August 19 and uses the date for orangutan conservation awareness
Pageant Planet’s archived podcast published for International Pageant Day identifies April 8, and observance references consistently describe the pageant-community day as an annual April 8…
UK Foreign Office and ILOSTAT publications have recognized International Parity at Work Day; trade-union guidance places it on January 11.
National Day Archives records November 1 and credits Krista Olson with founding the observance in 2019; current pet-industry editorial references retain November 1 annually.
Zero Waste Europe documents the International Plastic Bag Free Day campaign on July 3 and frames it around reducing lightweight plastic carrier-bag consumption and pollution.
The official International Podcast Day site identifies 30 September as International Podcast Day and explains that the event was rebranded from National Podcast Day in 2015.
Polar Bears International’s official event page identifies 27 February as International Polar Bear Day and describes the organization’s campaign around polar bear conservation.
World Animal Protection describes International Rabbit Day as occurring on the fourth Saturday of September and gives 26 September for 2026.
Oldways says its Cheese Coalition created the annual International Raw Milk Cheese Appreciation Day in 2015 and celebrates it on the third Saturday of October.
The campaign’s official site identifies International Read to Me! Day as 19 March and describes the date as a focal day within a broader ongoing reading effort.
Red Panda Network first-party material states that it launched International Red Panda Day in 2010 and that the observance takes place every year on the third Saturday of September. Current…
CCOHS maintains a current International Repetitive Strain Injury Awareness Day resource page identifying February 29, or February 28 in non-leap years, and continues to publish prevention r…
United Poultry Concerns identifies International Respect for Chickens Day as an annual May 4 project and traces the campaign to its 2005 launch.
The OSCE Mission to Serbia documented International Right to Know Day on 28 September in partnership with public institutions, UNDP, journalists and transparency groups.
Council of Europe source verification / international Roma community observance
Government of Nepal / Nepal Tourism Board evidence supports annual May 29 International Sagarmatha Day, a first 2008 programme and continuing Ministry/NTB/NMA involvement, commemorating Ten…
A 2026 UN Armenia/WFP release identifies International School Meals Day as 12 March 2026.
International Sculpture Center states that it inaugurated International Sculpture Day in 2015 and that the observance occurs on the last Saturday of April every year.
Great ShakeOut materials identify International ShakeOut Day as the third Thursday of October and promote earthquake drill participation
Deputy launched International Shift Worker Sunday in 2022 and describes it as an annual celebration on the last Sunday of November; its 2025 release calls that year the fourth annual event.
Bella Aurora first-party pages document International Skin Pigmentation Day on 25 May 2021 and call the 2022 campaign the second year running, supporting a 2021 first edition; a later regis…
The American Association for Nude Recreation states that International Skinny Dip Day is held on the second Saturday of July and identifies 11 July as the 2026 date.
AIUNAU states that it created International Sloth Day as a commitment from the first international meeting on sloth wellbeing and conservation in Medellín in November 2010 and set it for th…
The Association of British Theatre Technicians, describing its Stage Management Association partner, states that International Stage Management Day is on 10 October each year.
Creator Patrick Grant’s own site identifies International Strange Music Day as August 24 and continues to publish annual observance entries, including the 28th annual event in 2026.
The European Students’ Union marks November 17 as International Students’ Day and ties the commemoration to the 1939 Nazi attack on Czech students and universities.
Logic Masters India records the World Puzzle Federation’s announcement of 9/9 as International Sudoku Day; an institute under Turkmenistan’s Ministry of Foreign Affairs independently record…
GuerrillaGardening.org documents International Sunflower Guerrilla Gardening Day on 1 May and says Brussels guerrilla gardeners declared it in 2007.
E2open states that it partnered with National Today to establish June 7 as an annual International Supply Chain Professionals Day and announced the inaugural observance on 7 June 2022.
Surfrider Foundation states that International Surfing Day began in 2005; its history records Surfrider Foundation and Surfing Magazine declaring June 20 International Surfing Day, while cu…
The observance’s creator site states that it was founded in 2012 and is celebrated annually on the last Friday of November.
