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Worldwide and International Holiday Calendar

Worldwide and International Holiday Calendar for 2024-2025 year
There are not many things in life people agree about. So, if a holiday is called a worldwide or international one, and people agree to celebrate, or commemorate something at the global level, it means that this holiday (or commemoration) is based on things that are REALLY important. We’re sure that you don’t want to miss anything important, so we give you a complete list of Holidays and Special days observed all over the world. Help us Help us 

List of Holidays celebrated around the world for 2024-2025 year

July 2024

Wednesday 17 July - World Day for International Justice (International, also referred to as Day of International Criminal Justice or International Justice Day); World Emoji Day (International is an unofficial holiday. Celebrated annually since 2014, NBC reported that the day was Twitter's top trending item on July 17 in 2015); International Firgun Day (In 2014, Made in JLM, an Israeli non-profit community group, set out to create "International Firgun Day", a holiday celebrated yearly on July 17, where people share compliments or express genuine pride in the accomplishment of others on social media)
Monday 22 July - World Brain Day (was launched by the World Federation of Neurology on 22 July 2014 and is dedicated to a different neurological disease or topic every year); International Homework Day
Tuesday 23 July - World Whale and Dolphin Day (International Whaling Commission — IWC)
Wednesday 24 July - International Self-Care Day (Self-care is caring for your mental and emotional needs, physical needs, social needs, spiritual needs, practical needs and intellectual needs)
Friday 26 July - One Voice Day (is a global initiative to unite all countries of the world in the reading of the Universal Peace Covenant at exactly 6 p.m); International Day for the Conservation of the Mangrove Ecosystem; Esperanto Day; World Gaucher Disease Day
Wednesday 31 July - World Ranger Day (International Ranger Federation); Africa’s Women’s Day

August 2024

Friday 2 August - Roma Holocaust Memorial Day (Council of Europe, European Parliament); International Beer Day (is a celebration on the first Friday of every August founded in 2007 in Santa Cruz, California by Jesse Avshalomov); European Holocaust Remembrance Day for Sinti and Roma
Saturday 10 August - International Biodiesel Day (The day also honours the research experiments by Sir Rudolf Diesel who ran an engine with peanut oil in the year of 1893); World Lion Day
Monday 12 August - World Elephant Day (Conceived in 2011 by Canadian filmmakers Patricia Sims and Michael Clark of Canazwest Pictures, and Sivaporn Dardarananda, Secretary-General of the Elephant Reintroduction Foundation in Thailand, it was officially founded, supported and launched by Patricia Sims and the Elephant Reintroduction Foundation on August 12, 2012); International Youth Day
Monday 19 August - World Orangutan Day; World Photo Day (Founded in 2009 by Australian photographer Korske Ara. The date was chosen to honor the day the French government acquired a patent for the daguerreotype, an early photographic process); World Humanitarian Day
Tuesday 20 August - World Mosquito Day (in memory of the discovery of the British doctor Sir Ronald Ross, which he made in 1897. He was able to establish that it is female mosquitoes that transmit malaria between humans); World French Fries Day; World Laziness Day
Thursday 22 August - International Day of Remembrance for Victims of Violence Due to Religion or Belief (International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief - established since May 28, 2019 - UN A/RES/73/296); International Folklore Day; International Booktuber's Day
Saturday 24 August - International Strange Music Day (The celebration was conceived by Patrick Grant, a musician from New York City. The goal of the festival is simple: to encourage people to play and listen to music that we may not yet appreciate enough); International Bat Night
Sunday 25 August - Go Topless Day (celebrated in the nearest to Sunday 26 August)
Monday 26 August - International Dog Day (supported by the International Fund for the Protection of Animals); International Day against Dengue; International Actor's and Actress's Day
Tuesday 27 August - Global Forgiveness Day or World Forgiveness Day; World Day for the End of Speciesism (The concept appeared in 1970 in the work of British psychologist Richard D. Ryder, Speciesism)

September 2024

Tuesday 3 September - World Hygiene Day; European Bike Week (Begins the first Tuesday in September and runs through the end of the week)
Saturday 7 September - World Day of Destruction of a Military Toy (The 1987 idea of the World Association for Orphans and Children without Parental Care has been celebrated since 1988); World Duchenne Awareness Day; International Beard Day (first Saturday of September); International Day of Clean Air for blue skies; World Field Epidemiology Day; World Redhead Day
Wednesday 18 September - World Water Monitoring Day; International Read an eBook Day (The first major celebration of International read an eBook day was in 2014, and was put together by a major eBook distributor OverDrive); World Bamboo Day; International Day of Equal Pay (established by the UN General Assembly on November 15, 2019. Several countries, including Georgia and Ukraine, sponsored the resolution)
Saturday 21 September - World Alzheimer's Day; World Marrow Donor Day (is celebrated globally on the third Saturday of September); World Cleanup Day (the third Saturday of September); World Gratitude Day (First celebrated in 1965); International Eat An Apple Day (Third Saturday of Septembe); European Cooperation Day; International Coastal Cleanup Day (Held on the third weekend of September); Feast of the Nativity of the Virgin (Orthodox Church); International Day of Struggle against Monoculture Tree Plantations; International Day of Peace
Sunday 22 September - World Protection Elephant Day; World CML Day (Since 2008, patient organizations around the world have initiated events and projects on "CML Awareness Day" on September 22 to raise awareness of the needs of patients living with Chronic Myeloid Leukemia); World Rhino Day; International Mixed Berries Muffin Day; World Rose Day; International Mime Day; International Daughters' Day (Celebrated on the fourth Sunday of September); World Car Free Day
Monday 23 September - Day of Combating the Non-Completion of Secondary School Children; International Day against Sexual Exploitation and Trafficking of Women and Children (is celebrated every 23 September. It was jointly established by the World Conference of the Coalition against Trafficking in Persons and the Women’s Conference that took place in January 1999 in Dhaka, Bangladesh); International Day of Sign Languages (adopted by the UN on November 14, 2017); International Week of the Deaf
Tuesday 24 September - World Retina Week; World Day Against Software Patents (Brussels, 2nd September 2008 — A global coalition of more than 80 software companies, associations and developers has declared the 24th of September to be the “World Day Against Software Patents”); World Cancer Research Day
Saturday 28 September - International Safe Abortion Day (The day was first celebrated as a day of action for decriminalization of abortion in Latin America and the Caribbean in 1990 by the Campaña 28 Septiembre); International Right to Know Day; International Rabbit Day (Held on the fourth Saturday in September); International Day for Universal Access to Information (Universal access to information means that everyone has the right to seek, receive and impart information. This right is an integral part of the right to freedom of expression); European Mushroom Day (Celebrated on the fourth Saturday of September); International Poke Day; World Marmite Day; World Rabies Day

October 2024

Tuesday 1 October - World Vegetarian Day; International Coffee Day (At a meeting on 3–7 March 2014, a decision was taken by the International Coffee Organization to launch the first official International Coffee Day in Milan as part of Expo 2015); Balloons Around The World Day; World Cocoa and Chocolate Day; International Gaucher Disease Day; International Day of Older Persons; International Music Day; International School Library Month; World Vegetarian Day and International Vegetarian Week
Wednesday 2 October - World Day for Farmed Animals; World No Alcohol Day; World Farm Animals Day; International Walk and Bike to School Day (the first Wednesday in October); Worldwide Day of Play (is an annual event designed to encourage children and parents to turn off the television and play together, especially outdoors); International Day of Non-Violence
Saturday 5 October - International Day of No Prostitution (IDNP is an awareness day that was first observed in 2002. Locations at which IDNP was observed in its inaugural year included the San Francisco Bay Area of California, United States and Melbourne, Victoria, Australia); International Frugal Fun Day (first Saturday in October); Global James Bond Day; World Card Making Day (the first Saturday in October); World Meningitis Day; Ostomy Awareness Day (World Ostomy Day); World Teachers’ Day
Friday 11 October - International Vet Nurse Day (Held on the second Friday of October); International Newspaper Carrier Day (Held on the second Friday in October); International Day of the Girl Child; World Egg Day
Saturday 12 October - International Newspaper Carrier Day (Held on the Saturday of the first full week of October); World Bone and Joint Week; World Economist Day (the day when outstanding representatives of the profession are awarded a prize by decision of the Nobel Committee); Fall World Migratory Bird Day (Held on the second Saturday of May and October with the support of the United Nations Environment Program - UNEP); European Day for Organ Donation and Transplantation (The European Day for Organ Donation and Transplantation (#EODD; takes place to raise awareness on the importance of organ, tissue and cell donation as a way to improve and save lives); International Pinotage Day (Celebrated on the second Saturday of October); International Day Against DRM (IDAD, Inaugurated 2006); Astronomy Day (autumn); World Algae Day; World Arthritis Day; World Hospice and Palliative Care Day
Thursday 17 October - International ShakeOut Day (Drop, Cover and Hold On! If nothing else, remember to take those three steps if and when an earthquake strikes); World Trauma Day; World Day for Organ Donation and Transplantation; Edge Day (International observance, Straight Edge Movement); International Credit Union Day; International Day for the Eradication of Poverty
Friday 18 October - World Menopause Day (doctors call for women to take action at menopause, to prevent health problems in later life); Women's Global Happiness Day (directed against the epidemic of depression among women. The idea that arose in 2017 belongs to Carin Rockind); International Day for the Preservation of Nature
Saturday 19 October - Sloth International Day (Celebrated on the third Saturday in October); World Breast Cancer Day
Sunday 20 October - Internation Lead Poisoning Prevention Week (Held from Sunday to the last full week of October); International Pediatrics Day (The Day of Pediatrics or Día Internacional de Pediatría was instituted in 1973, during the World Congress of Pediatrics held in Argentina, in commemoration of the founding of Argentine Pediatric Society); International Mastocytosis & Mast Cell Diseases Awareness Day; International Chefs Day; International Day of the Air Traffic Controller; World Osteoporosis Day; World Statistics Day
Monday 21 October - International Day of the Nacho (nachos first appeared in 1943 in Piedras Negras, a small Mexican city which is very near to the U.S. military base Fort Duncan, in Texas); Global Iodine Deficiency Disorder Prevention Day or World Iodine Deficiency Day; International Day of Culture for Concord and Peace (organized by Aljabart Charitable Foundation)
Wednesday 23 October - International Mole Day; International Snow Leopard Day; Sustainability Day (The goal is to be able to take care of the planet for a very long time. Held on the fourth Wednesday in October); International Kabuki Syndrome Day; Global Day of Action for Child Survival
Friday 25 October - European Lawyers Day; World Opera Day (officially is celebrated since 2019); World Champagne Day (Celebrated on the penultimate Friday of October); International Artist's Day; World Short People's Day; World Karate Day; World Pasta Day

November 2024

Wednesday 6 November - World Ballet Day (is an annual celebration of ballet held since 2014 in the first week of October); International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
Thursday 7 November - International Day of African Writers (celebrated since 1992 at the initiative of the Pan-African Writers Association); International Merlot Day; International Project Management Day (IPM Day is always the first Thursday in November); International Inuit Day; International Medical Physics Day
Sunday 10 November - International Accounting Day (That's the date in 1494 when Venetian mathematician Luca Bartolomeo de Pacioli published an epic tome that included an in-depth look at bookkeeping practices); World Needleworker Day (celebrated since 2013 on St. Παρασκευή. Embroidery lovers consider her their patroness); World Keratoconus Day; International Hedgehog Day; Tongue Twister Day (It is celebrated on the second Sunday of November); World Science Day for Peace and Development
Sunday 24 November - Evolution Day (International observance); International Day of the Bible (is an initiative from the United States and especially the Association of the Bible who wanted to promote this day from November 24, 2014); International Carmenère Day (Created in 2014, this festival originally celebrated the 20th anniversary of a grape that was ‘lost,’ then rediscovered); International Laksa Day in Darwin, Australia (Last Sunday in November); The Feast of Christ the King (Date for 2024. Celebrated on the last Sunday before Advent. Roman Catholic Church); World Red Wine Day

December 2024

Monday 2 December - International Model Railroad Day; Cyber Monday (the online version of Black Friday, where online retailers offered big discounts to match their brick-and-mortar counterparts); World Futures Day; International Day for the Abolition of Slavery
Friday 6 December - International Sweater Vestival (Festival of Sweater Vests - fun unofficial Christmas fashion-related holiday featured)
Sunday 8 December - World Climate Day (initiated by several environmental associations of France and Belgium); International Radio and Television Day for Children
Saturday 14 December - International Monkey Day (The unofficial international holiday was created by artists Casey Gore and Eric Millikin to spread knowledge about animals and to show them care and love); World Energy Conservation Day
Sunday 15 December - Zamenhof Day or International Esperanto Day (International Esperanto Community); World Otaku Day (a person who is passionate about something)
Wednesday 18 December - UN Arabic Language Day (Established by the UN decision to include Arabic among the official and working languages of the General Assembly and its Main Committees); Twins Day; International Migrants Day
Saturday 21 December - World Orgasm Day (date for 2024. Celebrate the day of the winter solstice); Winter Solstice Day; International Rush Day (unofficial celebration of fans of the musical group)

January 2025

Wednesday 1 January - Global Family Day (is grew out of the UN Millennium Day celebration, which included the distribution of the 1996 children's book One Day at a Time); International Nepali Dhoti and Nepali Topi Day; Public Domain Day (multiple countries); World Peace Day
Saturday 4 January - World Braille Day (UN 1 November 2018 A/C.3/73/L.5/Rev.1); World Braille Day
Monday 6 January - World War Orphans Day (was initiated by the French organisation, SOS Enfants en Detresses)
Wednesday 8 January - Typing Day (International observance)
Friday 10 January - World Hindi Day (Vishwa Hindi Diwas)
Sunday 12 January - International Kiss A Ginger Day; World Daughter's Day (an international initiative that arose from the National Daughter Day in India)
Friday 24 January - International Women's Sports Day (initiated by the French CSA Audiovisual High Council in 2014); International Day of Education (3 December 2018 A/RES/73/25. Education is key to sustainable development); World Day for African and Afrodescendant Culture
Tuesday 28 January - European Data Protection Day (initiated by the Committee of Ministers of the Council of Europe)

February 2025

Saturday 1 February - Beginning of the World Interfaith Harmony Week (The World Interfaith Harmony Week was first proposed at the UN General Assembly on September 23, 2010 by H.M. King Abdullah II of Jordan); World Read Aloud Day (is a day devoted to the power of literacy and the transformational joy that comes from sharing stories aloud within a family, a classroom, and a community. Founded by the nonprofit LitWorld and sponsored by Scholastic); International Furmint Day (Official hashtag:#FurmintDay); World Aspergillosis Day
Saturday 8 February - Global Movie Day (Held on the second Saturday in February)
Monday 10 February - European Epilepsy Day; International Epilepsy Day (every year on the second Monday of February people join together to celebrate IED); World Pulses Day (UN: A/RES/73/251. Dried beans, lentils and peas are the most commonly known and consumed types of pulses. Pulses are a type of leguminous crop that are harvested solely for the dry seed.)
Friday 14 February - International Book Giving Day; International Heart Awareness Day
Tuesday 18 February - Global Drink Wine Day (So why should this only be a day that is celebrated in the USA?); International Asperger Syndrome Day
Wednesday 19 February - World Marine Mammal Protection Day and World Whale Day (is celebrated since 1986); International Tug-of-War Day (Dropped from the Olympic Games in 1920, Tug of War still remains a Worldwide sport and many nations have their own governing bodies)
Friday 21 February - International Tourist Guide Day (initiative by World Federation of Tourist Guide Associations - WFTGA); International Bear Protection Day; International Mother Language Day
Saturday 22 February - Birthday of Scouting and Guiding founder Robert Baden-Powell and Olave Baden-Powell (and its related observance: - Founder's Day or "B.-P. day" - World Organization of the Scout Movement); World Thinking Day (World Association of Girl Guides and Girl Scouts); Crime Victims Day in Europe; World Encephalitis Day; European Day for Equal Pay Men and Women
Sunday 23 February - International Dog Biscuit Appreciation Day (The first dog biscuits were developed in the mid-19th century by American manufacturer James Spratt)
Monday 24 February - World Information Architecture Day (World IA Day is a one-day annual celebration hosted by the Information Architecture Institute and held in dozens of locations across the globe); World Bartender Day
Friday 28 February - World Tailors Day (international); World Day without Facebook (organized by Facebook users to inform the administration of the social network about cyber addiction and intrusions in privacy)

March 2025

Saturday 1 March - World Compliment Day (appeared after many successful editions of “National Compliment Day” in the Netherlands); World Civil Defence Day; World Seagrass Day
Monday 3 March - World Butt Day (The idea for the holiday belongs to Kara Kitty Blair, Rae Woodbuns, Melissa Benzinger in 2012); World Hearing Day (is held each year to raise awareness on how to prevent deafness and hearing loss and promote ear and hearing care across the world); Clean Monday (also known as Pure Monday, Ash Monday, Monday of Lent or Green Monday, is the first day of Great Lent throughout Eastern Christianity); World Birth Defects Day; World Wildlife Day
Tuesday 4 March - World Obesity Day (The first World Obesity Day took place in 2015); International Scrapbooking Industry Day; International Day Against Sexual Exploitation; World Engineering Day (anniversary of the founding of the World Federation of Engineering Organizations - WFEO, in 1968); World Tennis Day (International Tennis Federation)
Wednesday 5 March - European Surveying and Geoinformation Day (and European Expert Geometer Day); World Energy Efficiency Day (This international event takes place in order to raise awareness of the rational use of energy); International Day for Disarmament and Non-Proliferation Awareness (established in 2023 at the initiative of the UN)
Thursday 6 March - World Lymphedema Day; European Day of the Righteous (commemorates those who have stood up against crimes against humanity and totalitarism with their own moral responsibility); European Speech and Language Therapy Day
Monday 10 March - Global Economics Day (Date in 2023. Celebrated at the International Business Festival [10-11 March, 2022], which takes place in Liverpool, UK every two years. The 2018 Festival celebrated and supported business, through unmissable conferences, seminars and bespoke business brokerage meetings at Exhibition Centre Liverpool for three weeks, bringing a world of business to anticipated crowds of thousands of delegates.The Festival hosted more than 100 individual events organized to promote economic stability and opportunities in a changing world and demonstrate the potential of the international market.); International Bagpipe Day; The International Day of Awesomeness; World Salt Awareness Week; International Women Judges' Day; International Mario Brothers Day
Tuesday 11 March - World Plumber’s Day (initiated by the World Plumbing Council); World Glaucoma Week (March 11 to 17); European Day of Remembrance for the Victims of Terrorism (commemorating the terrorist attacks in Madrid on March 11, 2004, which killed 191 people)
Wednesday 12 March - World Day Against Cyber Censorship (requested by Reporters Without Borders and Amnesty International in 2009); Global Brain Awareness Week (March 12 to 18); International Twitter Day
Thursday 13 March - World Kidney Day (is a global health awareness campaign focusing on the importance of the kidneys and reducing the frequency and impact of kidney disease and its associated health problems worldwide); World Endometriosis Awareness Day; Africa Scout Day; World Riesling Day (The First Annual Riesling Birthday was celebrated in 2019)
Friday 14 March - International Napping Day; International Ask a Question Day (Today, on the 14th March, was Albert Einstein’s birthday in 1879); International Mathematics Day
Saturday 15 March - World Day of Muslim Culture, Peace, Dialogue and Film; International Day Against Police Brutality; World Speech Day (The idea came from Simon's work in establishing a free database for contemporary and historic speeches. Speeches change the world: socially, politically, in the arts, business and religion. World Speech Day was launched by Simon Gibson at the Athens Democracy Forum in 2015); International Day to Combat Islamophobia; World Consumer Rights Day
Sunday 16 March - International Adolescent Health Week (Being a part of International Adolescent Health Week is easy! Wear lime green or share lime green giveaways and prizes all week long); World Sleep Day (is an annual event, intended to be a celebration of sleep and a call to action on important issues related to sleep, including medicine, education, social aspects and driving. It is organized by the World Sleep Day Committee of World Sleep Society [founded by WASM and WSF] and aims to lessen the burden of sleep problems on society through better prevention and management of sleep disorders. World Sleep Day is held the Friday before Spring Vernal Equinox of each year)
Tuesday 18 March - Global Recycling Day (first emerged in 2018 under the auspices of the Global Recycling Foundation); Paris Commune Day in France (celebrated since February 20, 1872)
Thursday 20 March - World Sparrow Day; UN French Language Day and International Francophonie Day (Organisation internationale de la Francophonie); World Storytelling Day; World Head Injury Awareness Day; World Fairy Tale Day (arose on the initiative of Sweden in 1991); International Without Meat Day (This holiday was observed for the first time in 1985 in the USA as Great American Meatout); International Macaroon Day (macaroon is a French confectionery made from egg whites, sugar and ground almonds. Usually made in the form of cookies; put cream or jam between two layers); World Frog Day (celebrated since 2009); World Flour Day; International Day of Happiness; World Oral Health Day
Friday 21 March - International Colour Day (The adoption of an international day of colour was proposed in 2008 by the Portuguese Color Association, whose president, Maria Joao Durao, presented the idea to the International Colour Association. The proposal was agreed in 2009 among the members of this society, which is composed of national associations and members representing more than 30 countries); World Planting Day; World Office Storage Day; World Puppetry Day; Education Freedom Day (The first Education Freedom Day was observed on January 17, 2013. The date, however, had to later be changed due to incompatibilities with local holidays such as Chinese New Year and summer holidays when schools are closed. Presently it is observed in March. In 2016, EFD was observed on March 21. Event organization is handled by DFF and volunteers around the world. Volunteers are encouraged to organize events that benefit local educational communities); International Cherry Blossom Festival (Macon, Georgia); International Day for the Elimination of Racial Discrimination; International Day of Forests; International Day of Nowruz; World Down Syndrome Day; World Home Economics Day; World Poetry Day
Saturday 22 March - International Taxi Driver Day (it was on this day in 1907 that the first taxis appeared on the streets of London); International Goof Off Day; World Maths Day (date for 2025); World Water Day
Saturday 29 March - World Piano Day (a annual worldwide event founded by a group of likeminded people, takes place on the 88th day of the year – because of the number of keys on the instrument being celebrated)
Sunday 30 March - School Day of Non-Violence and Peace (DENIP in countries with Southern Hemisphere school calendars. Founded in 1964); World Bipolar Day; World Idli Day

April 2025

Thursday 3 April - International Road Maintenance Day (#IRMD - first thursday of april); World Aquatic Animal Day (The first ever annual “World Aquatic Animal Day” took place April 3rd, 2020, with the inaugural theme of the aquaculture industry); World Party Day
Sunday 6 April - Tartan Day (Canada and the United States); International Carbonara Day; Global Teen Health Week (is the brainchild of Dr. Offutt); World Table Tennis Day (initiative by ITTF Foundation. Observed since 2015); Cartoon Day; World Physical Activity Day; International Asexuality Day (created by the Association pour la Visibilité Asexuelle. Asexuality is the definition or self-determination of people who are not sexually attracted); International Day of Sport for Development and Peace
Monday 7 April - International Beaver Day (The largest beaver-built dam is in Wood Buffalo National Park, Alberta, Canada and is 850m long); International Day of Reflection on the Genocide in Rwanda; World Health Day
Thursday 10 April - Siblings Day (International observance); International Safety Pin Day; World Homeopathy Day; International Recruiters Day (is held every year on the 2nd Thursday of April)
Saturday 12 April - Global Day of Action on Military Spending (The day was originally proposed by the International Peace Bureau and the Institute for Policy Studies with the aim of promoting a common awareness of the amounts of money spent on military); World Mixed Sandwich Day; International Day of Human Space Flight
Monday 14 April - International Moment of Laughter Day (is focuses on laughter as a way to de-stress); America Day (Día de las Américas [es] with the support of the Organization of American States); International Goalkeeper Day; World Chagas Disease Day
Tuesday 15 April - World Art Day; Universal Day of Culture; International Biomedical Laboratory Science Day (is celebrated annually on 15 April to promote and acknowledge the role of biomedical laboratory professionals in diagnostic and preventative healthcare organisations)
Thursday 17 April - Malbec World Day (Malbec is a purple grape variety used in making red wine. MWD is celebrated to commemorate the day when president Domingo Faustino Sarmiento of Argentina officially made it his mission to transform Argentina's wine industry. On that day, back in 1853, he tasked Michel Aimé Pouget, a French soil expert, to bring over new vines); International Pizza Cake Day; World Hemophilia Day
Friday 18 April - World Amateur Radio Day (Every April 18, radio amateurs worldwide take to the airwaves in celebration of World Amateur Radio Day. It was on that day in 1925 that the International Amateur Radio Union was formed in Paris); World Trifle Day; The International Day for Monuments and Sites
Saturday 19 April - World Bicycle Day (The events of the first LSD trip in April 19, 1943, now known as “Bicycle Day”, after the bicycle ride home, proved to Hofmann that he had indeed made a significant discovery: a psychoactive substance with extraordinary potency, capable of causing significant shifts of consciousness in incredibly low doses); World Circus Day (On the third Saturday of April); International Cat Lady Day
Sunday 20 April - UN Chinese Language Day (United Nations); International Milk Tea Dumpling Day (social media user initiative, 2019)
Thursday 24 April - International Day of Youth Solidarity in the Struggle Against Colonialism, for a Peaceful Existence; International Day Against Vivisection; International Girls in ICT Day (aims to encourage and empower girls and young women to consider studies and car eers in the growing field of Information and communications technology); International Day of Multilateralism and Diplomacy for Peace (A/RES/73/127. Multilateralism, process of organizing relations between groups of three or more states); World Immunization Week; International Day Against Meningitis; World Day for Laboratory Animals
Saturday 26 April - World Veterinary Day (Last Saturday in April); International Chernobyl Disaster Remembrance Day (A/RES/71/125); International TableTop Day (Celebrate on the last Saturday of April); International Sculpture Day (Held on the last Saturday of April); International A cappella Week Hanover (Begins on Saturday of the last full week of April); World Pilots' Day; World Intellectual Property Day

May 2025

Thursday 1 May - International Sunflower Guerrilla Gardening Day; Global Love Day; World Password Day (first Thursday of May); EuroMayDay (unites the theme of instability in the labor collectives of many countries of Western Europe); Responsible Animal Guardian Month; International Workers’ Day (May Day)
Friday 2 May - World Scrapbooking Day; International Sauvignon Blanc Day (The First Annual Sauvignon Blanc Day was celebrated in 2009. Celebrated always on the first Friday in May); World Day of Bullying Prevention; Harry Potter Day; World Tuna Day
Sunday 4 May - World Give Day (is one day a year when people all over the world come together to support the causes they care about most. Whether you donate to your favorite non-profit, a person in your community, or give some of your time, World Give Day is a day to focus on giving back); World Laughter Day (was created in 1998 by Dr. Madan Kataria, founder of th worldwide Laughter Yoga movemen); International Firefighters’ Day
Wednesday 7 May - World AIDS Orphans Day (an event organized by the François-Xavier Bagnoud Association since 2002 to raise public and government awareness of the plight of orphans); World Cake Day (social media user initiative, 2018)
Friday 9 May - World Moscato Day (Moscato, or Muscat in Italian, is one of the oldest known variety of grapes grown in the world); Europe Day, commemorating the Schuman Declaration. (European Union)
Sunday 11 May - International Dixieland Festival Dresden (starts on the second Sunday in May, but sometimes the date can vary); World Migratory Bird Day
Monday 12 May - International Awareness Day for Chronic Immunological and Neurological Diseases; World Melanoma Day (is recognized on the second Monday of May around the world to highlight the growing prevalence of malignant melanoma); World Fibromyalgia Awareness Day (Fibromyalgia is a complex of disorders and causes bone and muscle pain. This is a chronic disease that affects approximately 2-5% of the world's population); International Myalgic Encephalomyelitis / Chronic Fatigue Syndrome Awareness Day; International Nurses Day
Thursday 15 May - International Conscientious Objectors Day; World Embroidery Day or International Vyshyvanka Day (Celebrated on the third Thursday of May. Festival of culture of the East Slavic traditional embroidered shirt. Usually, an embroidered shirt was made from a homemade cloth, which was woven on a loom); Mucopolysaccharidosis Awareness Day; International Tuberous Sclerosis Awareness Day; International Day of Families
Friday 16 May - International Virtual Assistants Day (the third Friday in May); World Endangered Species Day (This environmental date is celebrated on the third Friday of May); International Day of Light (initiated by UNESCO on November 14, 2017); International Day of Living Together in Peace (adopted by the UN on December 8, 2017); International Coeliac Day; World Heavy Metal Day; International Boys Day
Saturday 17 May - World Whisky Day (Third Saturday of May); World Dog Day (started by The Vanderpump Dog Foundation in 2016. Celebrated on the third Saturday of May); International Day Against Homophobia, Transphobia and Biphobia; World Nordic Walking Day (is a day of unified commemoration of the Nordic Walking Family around the world. It is for everyone, of all ages and abilities); European Obesity Day (Held on the third Saturday in May); World Information Society Day (International); World Internet Day; World Hypertension Day; World Telecommunication and Information Society Day
Tuesday 20 May - World Bee Day (On this day Anton Janša, the pioneer of beekeeping, was born in 1734); European Maritime Day (European Council); International Drunkard's Day; International HR Day; World Metrology Day
Thursday 22 May - World Goth Day (The Official World Goth Day site defines it as "a day where the goth scene gets to celebrate its own being, and an opportunity to make its presence known to the rest of the world."); International Chardonnay Day (Celebrated on the Thursday before U.S. Memorial Day each year thanks to the creator Rick Bakas); International Day for Biological Diversity
Friday 23 May - World Turtle Day (sponsored yearly since 2000 by American Tortoise Rescue, is to bring attention to, and increase knowledge of and respect for, turtles and tortoises, and encourage human action to help them survive and thrive); International Day to End Obstetric Fistula
Thursday 29 May - World Digestive Health Day (On the 29th of May 1958, the last day of the First World Congress of Gastroenterology which took place in Washington, an assembly of distinguished gastroenterologists announced the foundation of the World Gastroenterology Organisation was born); International Blues & Rock Festival Altzella; International Day of UN Peacekeepers

June 2025

Sunday 1 June - World Milk Day (is a day established by the Food and Agriculture Organization [FAO] of the United Nations to recognise the importance of milk as a global food. It has been observed on June 1 each year since 2001); International Neighbours' Day; International Doubt Day; International Cancer Survivors Day (Date for 2025); Global Day of Parents
Monday 2 June - International Sex Workers Day (In 1975, on 2nd June, about 100 sex workers occupied Saint-Nizier Church in Lyon, France, to express their anger about their criminalised and exploitative living conditions. On 10th June at 5 o'clock the Church was brutally raided and cleared by police forces. This action sparked a national movement, and the day is now celebrated in Europe and around the world); World Responsible Tourism Day (Celebrated since 2012 on the first working day of June); World Eating Disorders Action Day
Tuesday 3 June - World Clubfoot Day (an initiative of the Ponseti International Association to commemorate the birthday of Ignacio Ponseti [1914-2009], the pioneer of the Ponseti technique for clubfoot); World Heart Rhythm Week; European Bicycle Day (celebrated since 1998); World Cyclists Day and World Bicycle Day
Friday 6 June - World Day of Verneuil's disease (or World Day for Hidradenitis Suppurativa); International Day of Cleaning Water Reservoirs (celebrated since 1995); European Dental Technicians Day (Celebrated on the first Friday of June); World Donut Day (Celebrated on the first Friday of June); World Transplant Day
Sunday 8 June - World Brain Tumor Day (day is observed on 8th of June every year since 2000. This day first observed by German Brain Tumour Association [Deutsche Hirntumorhilfe e.V.]. This is a non-profit organisation which raises public awareness and educates people about brain tumour); International Housewife's Day; World Oceans Day
Monday 9 June - Coral Triangle Day (The CTD was first held on June 10, 2012, as a regional interpretation of World Oceans Day. During the 8th Coral Triangle Initiative on Coral Reefs, Fisheries and Food Security (a multilateral partnership to safeguard the Coral Triangle's marine and coastal biological resources) Senior Official Meeting, member countries declared to designate the Coral Triangle Day to be held annually. The region covers the exclusive economic zones of six countries: Indonesia, Malaysia, Philippines, Papua New Guinea, Solomon Islands, and Timor-Leste); International Accreditation Day; International Archives Day (International Council on Archives)
Tuesday 10 June - World Pet Memorial Day (Held on the second Tuesday of June); World Art Nouveau Day (The first World Art Nouveau Day 2013 was organized by the Hungarian Museum of Decorative Arts, Budapest - IMM, in cooperation with the Szecessziós Magazine); World Ice Cream Day; World Handicrafts Day; International Heraldry Day
Wednesday 18 June - International Picnic Day; International Panic Day (Don't worry. Don't fret. and, above all, don't panic); Sustainable Gastronomy Day (The UN General Assembly adopted on 21 December 2016 its resolution A/RES/71/246 and designated 18 June as an international observance, Sustainable Gastronomy Day); International Sushi Day; International Day for Combating Hate Speech
Thursday 19 June - World Sickle Cell Day (International); World Sauntering Day (The holiday was created in 1979 by W.T. Rabe in response to the growing popularity of jogging. It is believed to have begun at the Grand Hotel on Mackinac Island in Michigan, USA. The Grand Hotel has the world's longest porch at 660 feet. The idea behind the day was to encourage people to slow down and appreciate the world around them); World Children's Football Day (UN); International Day for the Elimination of Sexual Violence in Conflict
Saturday 21 June - World Humanist Day (from the late 1980s to the early 1990s, the American Humanist Association and International Humanist and Ethical Union passed resolutions declaring World Humanist Day to be on the northern summer solstice); World Hydrography Day; International Slowness Day (Clémence Boucher, a Montreal community worker, got together with some friends in 2001 and picked June 21 — the longest day of the year — to kick off her movement.); World Giraffe Day (is an exciting annual event initiated by GCF to celebrate the longest-necked animal on the longest day or night); International Surfing Day (was established in 2005 by Surfing Magazine and The Surfrider Foundation); World Handshake Day; Make Music Day (Launched in 1982 in France as the Fête de la Musique, it is now held on the same day in more than 1,000 cities in 120 countries); International Drink Chenin Blanc Day (Happens annually on the 3rd Saturday of June); World Day against Amyotrophic Lateral Sclerosis; International Day of Yoga
Monday 23 June - International Women in Engineering Day (National Women in Engineering Day was launched for the first time in the UK on 23 June 2014 by the Women’s Engineering Society (WES) to celebrate its 95th anniversary. Since that launch in 2014 the day has grown enormously over the subsequent years to the point where it received UNESCO patronage in 2016. In 2017, National Women in Engineering Day became international for the first time due to the interest and enthusiasm developed by the international audience and participants in the previous years); International Dravet Syndrome Day; International Widows’ Day
Wednesday 25 June - World Vitiligo Day; International Scoliosis Awareness Day (SAUK launched #ISAD in 2013 to unite people across the world to create positive public awareness of scoliosis, promote education, and bring together those affected by the condition); Global Day of The Beatles; Cat World Domination Day; World Anti-Bullfighting Day
Friday 27 June - World Microbiome Day (was launched by the APC Microbiome Ireland. Microbiomes are communities of bacteria, fungi and virus that are found everywhere, from inside our bodies to soil and water); International Rosé Day (Celebrated on the 4th Friday of June); International Day of Deafblind Persons

July 2025

Tuesday 1 July - International Tartan Day (Tartan Day is a celebration of Scottish heritage on 6 April, the date on which the Declaration of Arbroath was signed in 1320. It originated in Canada in the mid-1980s. It spread to other communities of the Scottish diaspora in the 1990s. In Australia the similar International Tartan Day is held on 1 July, the anniversary of the repeal of the 1747 Act of Proscription that banned the wearing of tartan. Tartan Days typically have parades of pipe bands, Highland dancing and other Scottish-themed events); International Joke Day (Take the opportunity to get the jokes started today); International Chicken Wings Day; World Day of the White Band Against Poverty (as a reminder of the Millennium Goals signed in 2010); International Reggae Day; International Bidoof Day
Saturday 5 July - International Dnipro Day (Celebrated annually on the first Saturday of July); International Day of Cooperatives
Wednesday 9 July - International Gun Destruction Day (or Small Arms Destruction Day established by the United Nations in 2001)

How to celebrate Worldwide Holidays

Most such holidays are intended to unite people from different culture by focusing on issues that matter to everyone.
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