Browse upcoming holidays, observances, awareness dates, and notable events with their next occurrence and regional relevance. Select any event to see when it next takes place, including regional variations where available.
| Event Sorted ascending | Next occurrence | Regions |
|---|---|---|
| 2 January Holiday (Scotland) | Monday, 4 January 2027 | United Kingdom |
| 4/20 | Tuesday, 20 April 2027 | Worldwide |
| Ada Lovelace Day | Tuesday, 13 October 2026 | Worldwide |
| Administrative Professionals Day | Wednesday, 28 April 2027 | United States |
| Afghanistan Independence Day | Thursday, 19 August 2027 | Afghanistan |
| Africa Day | Tuesday, 25 May 2027 | Worldwide |
| Africa Industrialization Day | Friday, 20 November 2026 | Worldwide |
| African World Heritage Day | Wednesday, 5 May 2027 | Worldwide |
| Albania Independence Day | Saturday, 28 November 2026 | Albania |
| Algeria Revolution Day | Sunday, 1 November 2026 | Algeria |
| Alien Day | Monday, 26 April 2027 | Worldwide |
| Andorra National Day | Wednesday, 8 September 2027 | Andorra |
| Angola Independence Day | Wednesday, 11 November 2026 | Angola |
| Angola Peace Day | Sunday, 4 April 2027 | Angola |
| Antigua and Barbuda Independence Day | Sunday, 1 November 2026 | Antigua and Barbuda |
| April Fools' Day | Thursday, 1 April 2027 | Worldwide |
| Armenia Independence Day | Monday, 21 September 2026 | Armenia |
| Ash Wednesday | Wednesday, 10 February 2027 | Europe |
| Asteroid Day | Wednesday, 30 June 2027 | Worldwide |
| Australia Day | Tuesday, 26 January 2027 | Australia |
| Austria National Day | Monday, 26 October 2026 | Austria |
| Autistic Pride Day | Friday, 18 June 2027 | Worldwide |
| Autumn Equinox | Wednesday, 23 September 2026 | Worldwide |
| Azerbaijan Independence Day | Friday, 28 May 2027 | Azerbaijan |
| Back to the Future Day | Wednesday, 21 October 2026 | Worldwide |
| Bahamas Independence Day | Saturday, 10 July 2027 | The Bahamas |
| Bahrain National Day | Wednesday, 16 December 2026 | Bahrain |
| Bangladesh Independence Day | Friday, 26 March 2027 | Bangladesh |
| Barbados Independence Day | Monday, 30 November 2026 | Barbados |
| Batman Day | Saturday, 19 September 2026 | Worldwide |
| Battle of Pichincha Day | Monday, 24 May 2027 | Ecuador |
| Belarus Independence Day | Saturday, 3 July 2027 | Belarus |
| Belgium National Day | Wednesday, 21 July 2027 | Belgium |
| Belize Independence Day | Monday, 21 September 2026 | Belize |
| Benin Independence Day | Sunday, 1 August 2027 | Benin |
| Bhutan National Day | Thursday, 17 December 2026 | Bhutan |
| Bicycle Day | Monday, 19 April 2027 | Worldwide |
| Black Cat Appreciation Day | Tuesday, 17 August 2027 | United States |
| Black Cat Day | Tuesday, 27 October 2026 | United Kingdom |
| Black Friday | Friday, 27 November 2026 | United States |
| Black History Month | 1 October 2026 to 31 October 2026 | United Kingdom |
| 1 February 2027 to 28 February 2027 | United States | |
| Black Love Day | Saturday, 13 February 2027 | Worldwide |
| Bloomsday | Wednesday, 16 June 2027 | Worldwide |
| Blue Monday | Monday, 18 January 2027 | Worldwide |
| Bolivia Independence Day | Friday, 6 August 2027 | Bolivia |
| Book Lovers Day | Monday, 9 August 2027 | Worldwide |
| Bosnia and Herzegovina Statehood Day | Wednesday, 25 November 2026 | Bosnia and Herzegovina |
| Botswana Day | Wednesday, 30 September 2026 | Botswana |
| Boxing Day | Saturday, 26 December 2026 | United Kingdom |
| Boxing Day (substitute holiday) | Monday, 28 December 2026 | United Kingdom |
| Brazil Independence Day | Tuesday, 7 September 2027 | Brazil |
| Brunei National Day | Tuesday, 23 February 2027 | Brunei |
| Bulgaria National Day | Wednesday, 3 March 2027 | Bulgaria |
| Burkina Faso National Day | Friday, 11 December 2026 | Burkina Faso |
| Burns Night | Monday, 25 January 2027 | United Kingdom |
| Burundi Independence Day | Thursday, 1 July 2027 | Burundi |
| Cabo Verde Independence Day | Monday, 5 July 2027 | Cabo Verde |
| Cambodia Independence Day | Monday, 9 November 2026 | Cambodia |
| Cameroon National Day | Thursday, 20 May 2027 | Cameroon |
| Canada Day | Thursday, 1 July 2027 | Canada |
| Celebrate Bisexuality Day | Wednesday, 23 September 2026 | Worldwide |
| Central African Republic National Day | Tuesday, 1 December 2026 | Central African Republic |
| Chad Independence Day | Wednesday, 11 August 2027 | Chad |
| Chile National Day | Friday, 18 September 2026 | Chile |
| China National Day | Thursday, 1 October 2026 | China |
| Chinese Language Day | Tuesday, 20 April 2027 | Worldwide |
| Chinese New Year | Sunday, 7 February 2027 | Worldwide |
| Christmas Day | Friday, 25 December 2026 | Worldwide |
| Christmas Day (substitute holiday) | Monday, 27 December 2027 | United Kingdom |
| Christmas Eve | Thursday, 24 December 2026 | Worldwide |
| Christmas Jumper Day | Thursday, 10 December 2026 | United Kingdom |
| Christmas Sunday | Sunday, 27 December 2026 | Worldwide |
| Cinco de Mayo | Wednesday, 5 May 2027 | Worldwide |
| Colombia Independence Day | Tuesday, 20 July 2027 | Colombia |
| Columbus Day | Monday, 12 October 2026 | United States |
| Comic Sans Day | Friday, 2 July 2027 | Worldwide |
| Comoros Independence Day | Tuesday, 6 July 2027 | Comoros |
| Computer Security Day | Monday, 30 November 2026 | Worldwide |
| Constitution Day of the Slovak Republic | Wednesday, 1 September 2027 | Slovakia |
| Cook Islands Constitution Day | Wednesday, 4 August 2027 | Cook Islands |
| Costa Rica Independence Day | Tuesday, 15 September 2026 | Costa Rica |
| Croatia Statehood Day | Sunday, 30 May 2027 | Croatia |
| Cuba Liberation Day | Friday, 1 January 2027 | Cuba |
| Cyber Monday | Monday, 30 November 2026 | United States |
| Cyprus Independence Day | Thursday, 1 October 2026 | Cyprus |
| Côte d'Ivoire Independence Day | Saturday, 7 August 2027 | Côte d’Ivoire |
| Data Protection Day | Thursday, 28 January 2027 | Worldwide |
| Day of Remembrance for all Victims of Chemical Warfare | Monday, 30 November 2026 | Worldwide |
| Day of Restoration of the State of Lithuania | Tuesday, 16 February 2027 | Lithuania |
| Day of the Ninja | Saturday, 5 December 2026 | Worldwide |
| Day of the Seafarer | Friday, 25 June 2027 | Worldwide |
| Daylight Saving Time Ends | Sunday, 25 October 2026 | Europe , United Kingdom |
| Sunday, 1 November 2026 | United States | |
| Daylight Saving Time Starts | Sunday, 14 March 2027 | United States |
| Sunday, 28 March 2027 | Europe , United Kingdom | |
| Democratic Republic of the Congo Independence Day | Wednesday, 30 June 2027 | Democratic Republic of the Congo |
| Denmark Constitution Day | Saturday, 5 June 2027 | Denmark |
| Disarmament Week | 24 October 2026 to 30 October 2026 | Worldwide |
| Djibouti Independence Day | Sunday, 27 June 2027 | Djibouti |
| Dominica Independence Day | Tuesday, 3 November 2026 | Dominica |
| Dominican Republic Independence Day | Saturday, 27 February 2027 | Dominican Republic |
| Día de los Muertos | 1 November 2026 to 2 November 2026 | Mexico |
| Early May Bank Holiday | Monday, 3 May 2027 | United Kingdom |
| Earth Day | Thursday, 22 April 2027 | Worldwide |
| Easter Monday | Monday, 29 March 2027 | United Kingdom |
| Easter Sunday | Sunday, 28 March 2027 | Worldwide |
| Egypt Revolution Day | Friday, 23 July 2027 | Egypt |
| Eid Al Etihad | Wednesday, 2 December 2026 | United Arab Emirates |
| El Salvador Independence Day | Tuesday, 15 September 2026 | El Salvador |
| Embrace Your Geekness Day | Tuesday, 13 July 2027 | Worldwide |
| English Language Day | Friday, 23 April 2027 | Worldwide |
| Equatorial Guinea Independence Day | Monday, 12 October 2026 | Equatorial Guinea |
| Eritrea Independence Day | Monday, 24 May 2027 | Eritrea |
| Estonia Independence Day | Wednesday, 24 February 2027 | Estonia |
| Eswatini Independence Day | Monday, 6 September 2027 | Eswatini |
| Europe Day | Sunday, 9 May 2027 | Europe |
| Father's Day | Sunday, 20 June 2027 | Worldwide |
| Feast of Saint Marinus and Foundation of the Republic Day | Friday, 3 September 2027 | San Marino |
| Federated States of Micronesia Independence Day | Tuesday, 3 November 2026 | Federated States of Micronesia |
| Festivus | Wednesday, 23 December 2026 | Worldwide |
| Fibonacci Day | Monday, 23 November 2026 | Worldwide |
| Fiji Independence Day | Saturday, 10 October 2026 | Fiji |
| Finland Independence Day | Sunday, 6 December 2026 | Finland |
| Free Comic Book Day | Saturday, 1 May 2027 | Worldwide |
| French Language Day | Saturday, 20 March 2027 | Worldwide |
| French National Day | Wednesday, 14 July 2027 | France |
| Friendship Day | Sunday, 1 August 2027 | Worldwide |
| Gabon Independence Day | Tuesday, 17 August 2027 | Gabon |
| Galentine's Day | Saturday, 13 February 2027 | Worldwide |
| Geek Pride Day | Tuesday, 25 May 2027 | Worldwide |
| Georgia Independence Day | Wednesday, 26 May 2027 | Georgia |
| German Unity Day | Saturday, 3 October 2026 | Germany |
| Ghana Independence Day | Saturday, 6 March 2027 | Ghana |
| Giving Tuesday | Tuesday, 1 December 2026 | United States |
| Global Accessibility Awareness Day | Thursday, 20 May 2027 | Worldwide |
| Global Day of Parents | Tuesday, 1 June 2027 | Worldwide |
| Global Media and Information Literacy Week | 24 October 2026 to 31 October 2026 | Worldwide |
| Global Tourism Resilience Day | Wednesday, 17 February 2027 | Worldwide |
| Global Work From Home Day | Saturday, 10 April 2027 | Worldwide |
| Good Friday | Friday, 26 March 2027 | Worldwide |
| Greek Independence Day | Thursday, 25 March 2027 | Greece |
| Grenada Independence Day | Sunday, 7 February 2027 | Grenada |
| Groundhog Day | Tuesday, 2 February 2027 | Canada , United States |
| Guatemala Independence Day | Tuesday, 15 September 2026 | Guatemala |
| Guinea Independence Day | Friday, 2 October 2026 | Guinea |
| Guinea-Bissau Independence Day | Thursday, 24 September 2026 | Guinea-Bissau |
| Guy Fawkes Night | Thursday, 5 November 2026 | United Kingdom |
| Guyana Republic Day | Tuesday, 23 February 2027 | Guyana |
| Haiti Independence Day | Friday, 1 January 2027 | Haiti |
| Halloween | Saturday, 31 October 2026 | Worldwide |
| Hanukkah | 5 December 2026 to 12 December 2026 | Worldwide |
| Heritage Day | Thursday, 24 September 2026 | South Africa |
| Hobbit Day | Tuesday, 22 September 2026 | Worldwide |
| Honduras Independence Day | Tuesday, 15 September 2026 | Honduras |
| Human Rights Day | Thursday, 10 December 2026 | Worldwide |
| Hungary National Day | Friday, 23 October 2026 | Hungary |
| Hungary State Foundation Day | Friday, 20 August 2027 | Hungary |
| Iceland National Day | Thursday, 17 June 2027 | Iceland |
| Independence Day | Sunday, 4 July 2027 | United States |
| Independence Day (India) | Sunday, 15 August 2027 | India |
| Independence Day (Pakistan) | Saturday, 14 August 2027 | Pakistan |
| Independent Czechoslovak State Day | Wednesday, 28 October 2026 | Czechia |
| Indonesia Independence Day | Tuesday, 17 August 2027 | Indonesia |
| Infinity Day | Sunday, 8 August 2027 | Worldwide |
| International Albinism Awareness Day | Sunday, 13 June 2027 | Worldwide |
| International Anti-Corruption Day | Wednesday, 9 December 2026 | Worldwide |
| International Anti-Cybercrime Day | Thursday, 24 December 2026 | Worldwide |
| International Bat Night | 28 August 2027 to 29 August 2027 | Worldwide |
| International Beer Day | Friday, 6 August 2027 | Worldwide |
| International Burger Day | Friday, 28 May 2027 | Worldwide |
| International Cat Day | Sunday, 8 August 2027 | Worldwide |
| International Chernobyl Disaster Remembrance Day | Monday, 26 April 2027 | Worldwide |
| International Childhood Cancer Day | Monday, 15 February 2027 | Worldwide |
| International Civil Aviation Day | Monday, 7 December 2026 | Worldwide |
| International Clients' Day | Friday, 19 March 2027 | Worldwide |
| International Coffee Day | Thursday, 1 October 2026 | Worldwide |
| International Customs Day | Tuesday, 26 January 2027 | Worldwide |
| International Dance Day | Thursday, 29 April 2027 | Worldwide |
| International Day against Colonialism in All its Forms and Manifestations | Monday, 14 December 2026 | Worldwide |
| International Day against Drug Abuse and Illicit Trafficking | Saturday, 26 June 2027 | Worldwide |
| International Day against Illicit Trafficking in Cultural Property | Saturday, 14 November 2026 | Worldwide |
| International Day against Nuclear Tests | Sunday, 29 August 2027 | Worldwide |
| International Day against Unilateral Coercive Measures | Friday, 4 December 2026 | Worldwide |
| International Day against Violence and Bullying at School, including Cyberbullying | Thursday, 5 November 2026 | Worldwide |
| International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief | Sunday, 22 August 2027 | Worldwide |
| International Day for Biological Diversity | Saturday, 22 May 2027 | Worldwide |
| International Day for Biosphere Reserves | Tuesday, 3 November 2026 | Worldwide |
| International Day for Countering Hate Speech | Friday, 18 June 2027 | Worldwide |
| International Day for Dialogue among Civilizations | Thursday, 10 June 2027 | Worldwide |
| International Day for Digital Learning | Friday, 19 March 2027 | Worldwide |
| International Day for Disarmament and Non-Proliferation Awareness | Friday, 5 March 2027 | Worldwide |
| International Day for Disaster Risk Reduction | Tuesday, 13 October 2026 | Worldwide |
| International Day for Interventional Cardiology | Wednesday, 16 September 2026 | Worldwide |
| International Day for Judicial Well-being | Sunday, 25 July 2027 | Worldwide |
| International Day for Mine Awareness and Assistance in Mine Action | Sunday, 4 April 2027 | Worldwide |
| International Day for Monuments and Sites | Sunday, 18 April 2027 | Worldwide |
| International Day for People of African Descent | Tuesday, 31 August 2027 | Worldwide |
| International Day for Preventing the Exploitation of the Environment in War and Armed Conflict | Friday, 6 November 2026 | Worldwide |
| International Day for the Abolition of Slavery | Wednesday, 2 December 2026 | Worldwide |
| International Day for the Commemoration of the Dignity of Victims of Serious Crimes of International Concern | Saturday, 21 August 2027 | Worldwide |
| International Day for the Conservation of the Mangrove Ecosystem | Monday, 26 July 2027 | Worldwide |
| International Day for the Elimination of Child, Early and Forced Marriage | Friday, 27 November 2026 | Worldwide |
| International Day for the Elimination of Racial Discrimination | Sunday, 21 March 2027 | Worldwide |
| International Day for the Elimination of Sexual Violence in Conflict | Saturday, 19 June 2027 | Worldwide |
| International Day for the Elimination of Violence against Women | Wednesday, 25 November 2026 | Worldwide |
| International Day for the Eradication of Poverty | Saturday, 17 October 2026 | Worldwide |
| International Day for the Fight against Illegal, Unreported and Unregulated Fishing | Saturday, 5 June 2027 | Worldwide |
| International Day for the Preservation of the Ozone Layer | Wednesday, 16 September 2026 | Worldwide |
| International Day for the Prevention of and Fight against All Forms of Transnational Organized Crime | Sunday, 15 November 2026 | Worldwide |
| International Day for the Prevention of Violent Extremism as and when Conducive to Terrorism | Friday, 12 February 2027 | Worldwide |
| International Day for the Remembrance of the Slave Trade and its Abolition | Monday, 23 August 2027 | Worldwide |
| International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims | Wednesday, 24 March 2027 | Worldwide |
| International Day for the Total Elimination of Nuclear Weapons | Saturday, 26 September 2026 | Worldwide |
| International Day for Tolerance | Monday, 16 November 2026 | Worldwide |
| International Day for Underwater Cultural Heritage | Saturday, 21 August 2027 | Worldwide |
| International Day for Universal Access to Information | Monday, 28 September 2026 | Worldwide |
| International Day in Memory of the Victims of Earthquakes | Thursday, 29 April 2027 | Worldwide |
| International Day of Argania | Monday, 10 May 2027 | Worldwide |
| International Day of Awareness of Food Loss and Waste | Tuesday, 29 September 2026 | Worldwide |
| International Day of Awareness of the Special Development Needs and Challenges of Landlocked Developing Countries | Friday, 6 August 2027 | Worldwide |
| International Day of Banks | Friday, 4 December 2026 | Worldwide |
| International Day of Care and Support | Thursday, 29 October 2026 | Worldwide |
| International Day of Caves and Karst | Sunday, 13 September 2026 | Worldwide |
| International Day of Charity | Sunday, 5 September 2027 | Worldwide |
| International Day of Clean Air for Blue Skies | Tuesday, 7 September 2027 | Worldwide |
| International Day of Clean Energy | Tuesday, 26 January 2027 | Worldwide |
| International Day of Combating Sand and Dust Storms | Monday, 12 July 2027 | Worldwide |
| International Day of Commemoration and Dignity of the Victims of the Crime of Genocide and of the Prevention of this Crime | Wednesday, 9 December 2026 | Worldwide |
| International Day of Commemoration in Memory of the Victims of the Holocaust | Wednesday, 27 January 2027 | Worldwide |
| International Day of Conscience | Monday, 5 April 2027 | Worldwide |
| International Day of Cooperatives | Saturday, 3 July 2027 | Worldwide |
| International Day of Deafblindness | Sunday, 27 June 2027 | Worldwide |
| International Day of Democracy | Tuesday, 15 September 2026 | Worldwide |
| International Day of Education | Sunday, 24 January 2027 | Worldwide |
| International Day of Engagement in Science for Sustainable Development | Friday, 27 November 2026 | Worldwide |
| International Day of Epidemic Preparedness | Sunday, 27 December 2026 | Worldwide |
| International Day of Families | Saturday, 15 May 2027 | Worldwide |
| International Day of Family Remittances | Wednesday, 16 June 2027 | Worldwide |
| International Day of Forests | Sunday, 21 March 2027 | Worldwide |
| International Day of Friendship | Friday, 30 July 2027 | Worldwide |
| International Day of Happiness | Saturday, 20 March 2027 | Worldwide |
| International Day of Hope | Monday, 12 July 2027 | Worldwide |
| International Day of Human Fraternity | Thursday, 4 February 2027 | Worldwide |
| International Day of Human Space Flight | Monday, 12 April 2027 | Worldwide |
| International Day of Innocent Children Victims of Aggression | Friday, 4 June 2027 | Worldwide |
| International Day of Islamic Art | Wednesday, 18 November 2026 | Worldwide |
| International Day of Light | Sunday, 16 May 2027 | Worldwide |
| International Day of Living Together in Peace | Sunday, 16 May 2027 | Worldwide |
| International Day of Mathematics | Sunday, 14 March 2027 | Worldwide |
| International Day of Multilateralism and Diplomacy for Peace | Saturday, 24 April 2027 | Worldwide |
| International Day of Neutrality | Saturday, 12 December 2026 | Worldwide |
| International Day of Non-Violence | Friday, 2 October 2026 | Worldwide |
| International Day of Nowruz | Sunday, 21 March 2027 | Worldwide |
| International Day of Older Persons | Thursday, 1 October 2026 | Worldwide |
| International Day of Parliamentarism | Wednesday, 30 June 2027 | Worldwide |
| International Day of Peaceful Coexistence | Thursday, 28 January 2027 | Worldwide |
| International Day of Persons with Disabilities | Thursday, 3 December 2026 | Worldwide |
| International Day of Plant Health | Wednesday, 12 May 2027 | Worldwide |
| International Day of Play | Friday, 11 June 2027 | Worldwide |
| International Day of Police Cooperation | Tuesday, 7 September 2027 | Worldwide |
| International Day of Potato | Sunday, 30 May 2027 | Worldwide |
| International Day of Recognition for Women Searchers of Missing Persons | Saturday, 19 December 2026 | Worldwide |
| International Day of Reflection and Commemoration of the 1995 Genocide in Srebrenica | Sunday, 11 July 2027 | Worldwide |
| International Day of Reflection on the 1994 Genocide against the Tutsi in Rwanda | Wednesday, 7 April 2027 | Worldwide |
| International Day of Remembrance and Tribute to the Victims of Terrorism | Saturday, 21 August 2027 | Worldwide |
| International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade | Thursday, 25 March 2027 | Worldwide |
| International Day of Rural Women | Thursday, 15 October 2026 | Worldwide |
| International Day of Science, Technology and Innovation for the South | Wednesday, 16 September 2026 | Worldwide |
| International Day of Sign Languages | Wednesday, 23 September 2026 | Worldwide |
| International Day of Solidarity with Detained and Missing Staff Members | Thursday, 25 March 2027 | Worldwide |
| International Day of Solidarity with the Palestinian People | Sunday, 29 November 2026 | Worldwide |
| International Day of Sport for Development and Peace | Tuesday, 6 April 2027 | Worldwide |
| International Day of the Arabian Leopard | Wednesday, 10 February 2027 | Worldwide |
| International Day of the Celebration of the Solstice | Monday, 21 June 2027 | Worldwide |
| International Day of the Girl Child | Sunday, 11 October 2026 | Worldwide |
| International Day of the Intangible Cultural Heritage | Saturday, 17 October 2026 | Worldwide |
| International Day of the Markhor | Monday, 24 May 2027 | Worldwide |
| International Day of the Mediterranean Diet | Monday, 16 November 2026 | Worldwide |
| International Day of the Snow Leopard | Friday, 23 October 2026 | Worldwide |
| International Day of the Tropics | Tuesday, 29 June 2027 | Worldwide |
| International Day of the Victims of Enforced Disappearances | Monday, 30 August 2027 | Worldwide |
| International Day of the World's Indigenous Peoples | Monday, 9 August 2027 | Worldwide |
| International Day of the World's Indigenous Women and Girls | Sunday, 5 September 2027 | Worldwide |
| International Day of UN Peacekeepers | Saturday, 29 May 2027 | Worldwide |
| International Day of University Sport | Sunday, 20 September 2026 | Worldwide |
| International Day of Women and Girls in Science | Thursday, 11 February 2027 | Worldwide |
| International Day of Women and Girls of African Descent | Sunday, 25 July 2027 | Worldwide |
| International Day of Women in Diplomacy | Thursday, 24 June 2027 | Worldwide |
| International Day of Women in Multilateralism | Monday, 25 January 2027 | Worldwide |
| International Day of Women Judges | Wednesday, 10 March 2027 | Worldwide |
| International Day of Yoga | Monday, 21 June 2027 | Worldwide |
| International Day of Zero Tolerance for Female Genital Mutilation | Saturday, 6 February 2027 | Worldwide |
| International Day of Zero Waste | Tuesday, 30 March 2027 | Worldwide |
| International Day to Combat Islamophobia | Monday, 15 March 2027 | Worldwide |
| International Day to End Impunity for Crimes against Journalists | Monday, 2 November 2026 | Worldwide |
| International Day to End Obstetric Fistula | Sunday, 23 May 2027 | Worldwide |
| International Day to Protect Education from Attack | Thursday, 9 September 2027 | Worldwide |
| International Delegate's Day | Sunday, 25 April 2027 | Worldwide |
| International Equal Pay Day | Friday, 18 September 2026 | Worldwide |
| International Geodiversity Day | Tuesday, 6 October 2026 | Worldwide |
| International Girls in ICT Day | Thursday, 22 April 2027 | Worldwide |
| International GNSS Day | Wednesday, 23 September 2026 | Worldwide |
| International Guide Dog Day | Wednesday, 28 April 2027 | Worldwide |
| International Human Solidarity Day | Sunday, 20 December 2026 | Worldwide |
| International Internet Day | Thursday, 29 October 2026 | Worldwide |
| International Jazz Day | Friday, 30 April 2027 | Worldwide |
| International Kissing Day | Tuesday, 6 July 2027 | Worldwide |
| International Left-Handers Day | Friday, 13 August 2027 | Worldwide |
| International LGBTQI+ Day | Monday, 28 June 2027 | Worldwide |
| International Literacy Day | Wednesday, 8 September 2027 | Worldwide |
| International Men's Day | Thursday, 19 November 2026 | Worldwide |
| International Migrants Day | Friday, 18 December 2026 | Worldwide |
| International Moon Day | Tuesday, 20 July 2027 | Worldwide |
| International Mother Language Day | Sunday, 21 February 2027 | Worldwide |
| International Mountain Day | Friday, 11 December 2026 | Worldwide |
| International Museum Day | Tuesday, 18 May 2027 | Worldwide |
| International Non-Binary People's Day | Wednesday, 14 July 2027 | Worldwide |
| International Nurses Day | Wednesday, 12 May 2027 | Worldwide |
| International Polar Bear Day | Saturday, 27 February 2027 | Worldwide |
| International Tea Day | Friday, 21 May 2027 | Worldwide |
| International Tiger Day | Thursday, 29 July 2027 | Worldwide |
| International Transgender Day of Visibility | Wednesday, 31 March 2027 | Worldwide |
| International Translation Day | Wednesday, 30 September 2026 | Worldwide |
| International Universal Health Coverage Day | Saturday, 12 December 2026 | Worldwide |
| International Volunteer Day for Economic and Social Development | Saturday, 5 December 2026 | Worldwide |
| International Week of Science and Peace | 9 November 2026 to 15 November 2026 | Worldwide |
| International Wellness Day | Thursday, 15 April 2027 | Worldwide |
| International Widows' Day | Wednesday, 23 June 2027 | Worldwide |
| International Women's Day | Monday, 8 March 2027 | Worldwide |
| International Youth Day | Thursday, 12 August 2027 | Worldwide |
| Iraq National Day | Saturday, 3 October 2026 | Iraq |
| Italy Republic Day | Wednesday, 2 June 2027 | Italy |
| Jamaica Independence Day | Friday, 6 August 2027 | Jamaica |
| Jamhuri Day | Saturday, 12 December 2026 | Kenya |
| Japan Emperor’s Birthday | Tuesday, 23 February 2027 | Japan |
| Jordan Independence Day | Tuesday, 25 May 2027 | Jordan |
| Juneteenth | Saturday, 19 June 2027 | United States |
| Kazakhstan Independence Day | Wednesday, 16 December 2026 | Kazakhstan |
| Kazakhstan Republic Day | Sunday, 25 October 2026 | Kazakhstan |
| King's Day | Tuesday, 27 April 2027 | Netherlands |
| Kiribati Independence Day | Monday, 12 July 2027 | Kiribati |
| Kosovo Independence Day | Wednesday, 17 February 2027 | Kosovo |
| Kuwait National Day | Thursday, 25 February 2027 | Kuwait |
| Kwanzaa | 26 December 2026 to 1 January 2027 | Worldwide |
| Kyrgyzstan Independence Day | Tuesday, 31 August 2027 | Kyrgyzstan |
| Labor Day | Monday, 6 September 2027 | United States |
| Laos National Day | Wednesday, 2 December 2026 | Laos |
| Las Posadas | 16 December 2026 to 24 December 2026 | Mexico |
| Latvia Independence Day | Wednesday, 18 November 2026 | Latvia |
| Leap Day | Tuesday, 29 February 2028 | Worldwide |
| Lebanon Independence Day | Sunday, 22 November 2026 | Lebanon |
| Lent | 10 February 2027 to 25 March 2027 | Worldwide |
| Lesotho Independence Day | Sunday, 4 October 2026 | Lesotho |
| LGBT+ History Month | 1 February 2027 to 28 February 2027 | United Kingdom |
| Liberia Independence Day | Monday, 26 July 2027 | Liberia |
| Libya Independence Day | Thursday, 24 December 2026 | Libya |
| Libya Revolution Day | Wednesday, 17 February 2027 | Libya |
| Liechtenstein National Day | Sunday, 15 August 2027 | Liechtenstein |
| Luxembourg National Day | Wednesday, 23 June 2027 | Luxembourg |
| Madagascar Independence Day | Saturday, 26 June 2027 | Madagascar |
| Make Music Day | Monday, 21 June 2027 | Worldwide |
| Malawi Independence Day | Tuesday, 6 July 2027 | Malawi |
| Malaysia Day | Wednesday, 16 September 2026 | Malaysia |
| Malaysia National Day | Tuesday, 31 August 2027 | Malaysia |
| Maldives Independence Day | Monday, 26 July 2027 | Maldives |
| Mali Independence Day | Tuesday, 22 September 2026 | Mali |
| Malta Independence Day | Monday, 21 September 2026 | Malta |
| Marathon Monday | Monday, 19 April 2027 | United States |
| Mario Day | Wednesday, 10 March 2027 | Worldwide |
| Marshall Islands Constitution Day | Saturday, 1 May 2027 | Marshall Islands |
| Martin Luther King Jr. Day | Monday, 18 January 2027 | United States |
| Maundy Thursday | Thursday, 25 March 2027 | Worldwide |
| Mauritania Independence Day | Saturday, 28 November 2026 | Mauritania |
| Mauritius National Day | Friday, 12 March 2027 | Mauritius |
| May Revolution Day | Tuesday, 25 May 2027 | Argentina |
| Memon Day | Saturday, 10 April 2027 | Worldwide |
| Memorial Day | Monday, 31 May 2027 | United States |
| Men's Health Month | 1 June 2027 to 30 June 2027 | United States |
| Menstrual Hygiene Day | Friday, 28 May 2027 | Worldwide |
| Mexico Independence Day | Wednesday, 16 September 2026 | Mexico |
| Micro-, Small and Medium-sized Enterprises Day | Sunday, 27 June 2027 | Worldwide |
| Mischief Night | Friday, 30 October 2026 | Worldwide |
| Moldova Independence Day | Friday, 27 August 2027 | Moldova |
| Mole Day | Friday, 23 October 2026 | Worldwide |
| Monaco National Day | Thursday, 19 November 2026 | Monaco |
| Monkey Day | Monday, 14 December 2026 | Worldwide |
| Montenegro Statehood Day | Tuesday, 13 July 2027 | Montenegro |
| Morocco Throne Day | Friday, 30 July 2027 | Morocco |
| Mother's Day | Sunday, 7 March 2027 | United Kingdom |
| Sunday, 9 May 2027 | United States | |
| Mozambique Independence Day | Friday, 25 June 2027 | Mozambique |
| Myanmar Independence Day | Monday, 4 January 2027 | Myanmar |
| Naadam | 11 July 2027 to 15 July 2027 | Mongolia |
| Namibia Independence Day | Sunday, 21 March 2027 | Namibia |
| National Cancer Survivors Day | Sunday, 6 June 2027 | United States |
| National Cigar Day | Saturday, 27 February 2027 | United States |
| National Coffee Day | Tuesday, 29 September 2026 | United States |
| National Coming Out Day | Sunday, 11 October 2026 | Worldwide |
| National DNA Day | Sunday, 25 April 2027 | United States |
| National Dog Day | Thursday, 26 August 2027 | United States |
| National First Ladies Day | Monday, 26 April 2027 | United States |
| National Gorilla Suit Day | Sunday, 31 January 2027 | United States |
| National Hugging Day | Thursday, 21 January 2027 | Worldwide |
| National Ice Cream Day | Sunday, 18 July 2027 | United States |
| National Pipe Smoking Day | Saturday, 20 February 2027 | United States |
| National Pizza Day | Tuesday, 9 February 2027 | United States |
| National Popcorn Day | Tuesday, 19 January 2027 | United States |
| National Puppy Day | Tuesday, 23 March 2027 | United States |
| National Puzzle Day | Friday, 29 January 2027 | United States |
| National Relaxation Day | Sunday, 15 August 2027 | United States |
| Nauru Independence Day | Sunday, 31 January 2027 | Nauru |
| Nelson Mandela International Day | Sunday, 18 July 2027 | Worldwide |
| New Year's Day | Friday, 1 January 2027 | Worldwide |
| New Year's Day Bank Holiday | Friday, 1 January 2027 | United Kingdom |
| New Year's Eve | Thursday, 31 December 2026 | Worldwide |
| Nicaragua Independence Day | Tuesday, 15 September 2026 | Nicaragua |
| Niger Republic Day | Friday, 18 December 2026 | Niger |
| Nigeria Independence Day | Thursday, 1 October 2026 | Nigeria |
| No Pants Day | Friday, 7 May 2027 | Worldwide |
| North Macedonia Independence Day | Wednesday, 8 September 2027 | North Macedonia |
| Norway Constitution Day | Monday, 17 May 2027 | Norway |
| Ohi Day | Wednesday, 28 October 2026 | Greece |
| Oktoberfest | 19 September 2026 to 4 October 2026 | Germany |
| Oman National Day | 20 November 2026 to 21 November 2026 | Oman |
| Pakistan Day | Tuesday, 23 March 2027 | Pakistan |
| Palau Independence Day | Thursday, 1 October 2026 | Palau |
| Palm Sunday | Sunday, 21 March 2027 | Worldwide |
| Panama Separation Day | Tuesday, 3 November 2026 | Panama |
| Papua New Guinea Independence Day | Wednesday, 16 September 2026 | Papua New Guinea |
| Paraguay Independence Day | 14 May 2027 to 15 May 2027 | Paraguay |
| Parents' Day | Sunday, 25 July 2027 | United States |
| Pentecost | Sunday, 16 May 2027 | Europe |
| Peru Independence Day | Wednesday, 28 July 2027 | Peru |
| Philippines Independence Day | Saturday, 12 June 2027 | Philippines |
| Pi Day | Sunday, 14 March 2027 | Worldwide |
| Pluto Demoted Day | Tuesday, 24 August 2027 | Worldwide |
| Pokémon Day | Saturday, 27 February 2027 | Worldwide |
| Poland Constitution Day | Monday, 3 May 2027 | Poland |
| Poland Independence Day | Wednesday, 11 November 2026 | Poland |
| Portugal Day | Thursday, 10 June 2027 | Portugal |
| Presidents' Day | Monday, 15 February 2027 | United States |
| Pretend to Be a Time Traveler Day | Tuesday, 8 December 2026 | Worldwide |
| Pride Month | 1 June 2027 to 30 June 2027 | Worldwide |
| Programmers' Day | Sunday, 13 September 2026 | Worldwide |
| Qatar National Day | Friday, 18 December 2026 | Qatar |
| Random Acts of Kindness Day | Wednesday, 17 February 2027 | Worldwide |
| Rare Disease Day | Sunday, 28 February 2027 | Worldwide |
| Record Store Day | Saturday, 17 April 2027 | Worldwide |
| Republic of the Congo Independence Day | Sunday, 15 August 2027 | Republic of the Congo |
| Revenge of the Fifth | Wednesday, 5 May 2027 | Worldwide |
| Romania National Day | Tuesday, 1 December 2026 | Romania |
| Russia Day | Saturday, 12 June 2027 | Russia |
| Russian Language Day | Sunday, 6 June 2027 | Worldwide |
| Rwanda Independence Day | Thursday, 1 July 2027 | Rwanda |
| Rwanda Liberation Day | Sunday, 4 July 2027 | Rwanda |
| Safer Internet Day | Tuesday, 9 February 2027 | Worldwide |
| Saint Kitts and Nevis Independence Day | Saturday, 19 September 2026 | Saint Kitts and Nevis |
| Saint Lucia Independence Day | Monday, 22 February 2027 | Saint Lucia |
| Saint Nicholas Day | Sunday, 6 December 2026 | Worldwide |
| Saint Vincent and the Grenadines Independence Day | Tuesday, 27 October 2026 | Saint Vincent and the Grenadines |
| Samoa Independence Day | Tuesday, 1 June 2027 | Samoa |
| Sandwich Day | Tuesday, 3 November 2026 | Worldwide |
| Saudi National Day | Wednesday, 23 September 2026 | Saudi Arabia |
| Senegal Independence Day | Sunday, 4 April 2027 | Senegal |
| Serbia Statehood Day | 15 February 2027 to 16 February 2027 | Serbia |
| Seychelles Constitution Day | Friday, 18 June 2027 | Seychelles |
| Seychelles Independence Day | Tuesday, 29 June 2027 | Seychelles |
| Shakespeare Day | Friday, 23 April 2027 | United Kingdom |
| Shrove Tuesday | Tuesday, 9 February 2027 | Worldwide |
| Siblings Day | Saturday, 10 April 2027 | Worldwide |
| Sierra Leone Independence Day | Tuesday, 27 April 2027 | Sierra Leone |
| Singapore National Day | Monday, 9 August 2027 | Singapore |
| Singles Awareness Day | Monday, 15 February 2027 | Worldwide |
| Singles' Day | Wednesday, 11 November 2026 | Worldwide |
| Slovenia Statehood Day | Friday, 25 June 2027 | Slovenia |
| Solomon Islands Independence Day | Wednesday, 7 July 2027 | Solomon Islands |
| Somalia Independence Day | Thursday, 1 July 2027 | Somalia |
| South Africa Freedom Day | Tuesday, 27 April 2027 | South Africa |
| South Korea National Foundation Day | Saturday, 3 October 2026 | South Korea |
| South Sudan Independence Day | Friday, 9 July 2027 | South Sudan |
| Spain National Day | Monday, 12 October 2026 | Spain |
| Spanish Language Day | Friday, 23 April 2027 | Worldwide |
| Spring Bank Holiday | Monday, 31 May 2027 | United Kingdom |
| Spring Equinox | Saturday, 20 March 2027 | Worldwide |
| Sri Lanka National Independence Day | Thursday, 4 February 2027 | Sri Lanka |
| St Patrick's Day | Wednesday, 17 March 2027 | Worldwide |
| Star Trek Day | Wednesday, 8 September 2027 | Worldwide |
| Star Wars Day | Tuesday, 4 May 2027 | Worldwide |
| State of Palestine Independence Day | Sunday, 15 November 2026 | State of Palestine |
| Sudan Independence Day | Friday, 1 January 2027 | Sudan |
| Summer Bank Holiday | Monday, 30 August 2027 | United Kingdom |
| Summer Solstice | Monday, 21 June 2027 | Worldwide |
| Super Bowl Sunday | Sunday, 14 February 2027 | United States |
| Suriname Independence Day | Wednesday, 25 November 2026 | Suriname |
| Sustainable Gastronomy Day | Friday, 18 June 2027 | Worldwide |
| Sweden National Day | Sunday, 6 June 2027 | Sweden |
| Sweetest Day | Saturday, 17 October 2026 | United States |
| Switzerland National Day | Sunday, 1 August 2027 | Switzerland |
| Syria Evacuation Day | Saturday, 17 April 2027 | Syria |
| System Administrator Appreciation Day | Friday, 30 July 2027 | Worldwide |
| São Tomé and Príncipe Independence Day | Monday, 12 July 2027 | São Tomé and Príncipe |
| Tajikistan Independence Day | Thursday, 9 September 2027 | Tajikistan |
| Talk Like a Pirate Day | Saturday, 19 September 2026 | Worldwide |
| Tanzania Independence Day | Wednesday, 9 December 2026 | Tanzania |
| Tanzania Union Day | Monday, 26 April 2027 | Tanzania |
| Thailand National Day | Saturday, 5 December 2026 | Thailand |
| Thanksgiving Day | Thursday, 26 November 2026 | United States |
| The Gambia Independence Day | Thursday, 18 February 2027 | The Gambia |
| Time of Remembrance and Reconciliation for Those Who Lost Their Lives During the Second World War | 8 May 2027 to 9 May 2027 | Worldwide |
| Timor-Leste Proclamation of Independence Day | Saturday, 28 November 2026 | Timor-Leste |
| Timor-Leste Restoration of Independence Day | Thursday, 20 May 2027 | Timor-Leste |
| Togo Independence Day | Tuesday, 27 April 2027 | Togo |
| Tolkien Reading Day | Thursday, 25 March 2027 | Worldwide |
| Tonga Constitution Day | Wednesday, 4 November 2026 | Tonga |
| Tonga Emancipation Day | Friday, 4 June 2027 | Tonga |
| Towel Day | Tuesday, 25 May 2027 | Worldwide |
| Transgender Awareness Week | 13 November 2026 to 19 November 2026 | Worldwide |
| Transgender Day of Remembrance | Friday, 20 November 2026 | Worldwide |
| Trinidad and Tobago Independence Day | Tuesday, 31 August 2027 | Trinidad and Tobago |
| Tunisia Independence Day | Saturday, 20 March 2027 | Tunisia |
| Turkmenistan Independence Day | Tuesday, 27 October 2026 | Turkmenistan |
| Tuvalu Independence Day | Thursday, 1 October 2026 | Tuvalu |
| Türkiye Republic Day | Thursday, 29 October 2026 | Türkiye |
| Uganda Independence Day | Friday, 9 October 2026 | Uganda |
| Ugly Christmas Sweater Day | Friday, 18 December 2026 | Worldwide |
| Ukraine Independence Day | Tuesday, 24 August 2027 | Ukraine |
| United Nations Day | Saturday, 24 October 2026 | Worldwide |
| United Nations Day for South-South Cooperation | Saturday, 12 September 2026 | Worldwide |
| United Nations International Day in Support of Victims of Torture | Saturday, 26 June 2027 | Worldwide |
| United Nations Public Service Day | Wednesday, 23 June 2027 | Worldwide |
| Uruguay Independence Day | Wednesday, 25 August 2027 | Uruguay |
| Uzbekistan Independence Day | Wednesday, 1 September 2027 | Uzbekistan |
| Valentine's Day | Sunday, 14 February 2027 | Worldwide |
| Vanuatu Independence Day | Friday, 30 July 2027 | Vanuatu |
| Veganuary | 1 January 2027 to 31 January 2027 | Worldwide |
| Venezuela Independence Day | Monday, 5 July 2027 | Venezuela |
| Veterans Day | Wednesday, 11 November 2026 | United States |
| Victory of the Islamic Revolution in Iran | Thursday, 11 February 2027 | Iran |
| Vietnam National Day | Thursday, 2 September 2027 | Vietnam |
| Waffle Day | Thursday, 25 March 2027 | Sweden |
| Waitangi Day | Saturday, 6 February 2027 | New Zealand |
| Week of Solidarity with the Peoples of Non-Self-Governing Territories | 25 May 2027 to 31 May 2027 | Worldwide |
| Week of Solidarity with the Peoples Struggling against Racism and Racial Discrimination | 21 March 2027 to 27 March 2027 | Worldwide |
| White Day | Sunday, 14 March 2027 | Worldwide |
| Winter Solstice | Monday, 21 December 2026 | Worldwide |
| Women's Equality Day | Thursday, 26 August 2027 | United States |
| Women's History Month | 1 March 2027 to 31 March 2027 | Worldwide |
| World AIDS Day | Tuesday, 1 December 2026 | Worldwide |
| World Alzheimer's Day | Monday, 21 September 2026 | Worldwide |
| World AMR Awareness Week | 18 November 2026 to 24 November 2026 | Worldwide |
| World Animal Day | Sunday, 4 October 2026 | Worldwide |
| World Arabic Language Day | Friday, 18 December 2026 | Worldwide |
| World Art Day | Thursday, 15 April 2027 | Worldwide |
| World Arthritis Day | Monday, 12 October 2026 | Worldwide |
| World Autism Awareness Day | Friday, 2 April 2027 | Worldwide |
| World Backup Day | Wednesday, 31 March 2027 | Worldwide |
| World Basketball Day | Monday, 21 December 2026 | Worldwide |
| World Beard Day | Saturday, 4 September 2027 | Worldwide |
| World Bee Day | Thursday, 20 May 2027 | Worldwide |
| World Bicycle Day | Thursday, 3 June 2027 | Worldwide |
| World Blood Donor Day | Monday, 14 June 2027 | Worldwide |
| World Book and Copyright Day | Friday, 23 April 2027 | Worldwide |
| World Book Day | Thursday, 4 March 2027 | Ireland , United Kingdom |
| World Braille Day | Monday, 4 January 2027 | Worldwide |
| World Breastfeeding Week | 1 August 2027 to 7 August 2027 | Worldwide |
| World Cancer Day | Thursday, 4 February 2027 | Worldwide |
| World Car Free Day | Tuesday, 22 September 2026 | Worldwide |
| World Cervical Cancer Elimination Day | Tuesday, 17 November 2026 | Worldwide |
| World Chagas Disease Day | Wednesday, 14 April 2027 | Worldwide |
| World Chess Day | Tuesday, 20 July 2027 | Worldwide |
| World Children's Day | Friday, 20 November 2026 | Worldwide |
| World Chocolate Day | Wednesday, 7 July 2027 | Worldwide |
| World Cities Day | Saturday, 31 October 2026 | Worldwide |
| World Cleanup Day | Sunday, 20 September 2026 | Worldwide |
| World Compliment Day | Monday, 1 March 2027 | Worldwide |
| World Conjoined Twins Day | Tuesday, 24 November 2026 | Worldwide |
| World COPD Day | Wednesday, 18 November 2026 | Worldwide |
| World Cotton Day | Wednesday, 7 October 2026 | Worldwide |
| World Creativity and Innovation Day | Wednesday, 21 April 2027 | Worldwide |
| World Day Against Child Labour | Saturday, 12 June 2027 | Worldwide |
| World Day against Trafficking in Persons | Friday, 30 July 2027 | Worldwide |
| World Day for African and Afrodescendant Culture | Sunday, 24 January 2027 | Worldwide |
| World Day for Audiovisual Heritage | Tuesday, 27 October 2026 | Worldwide |
| World Day for Cultural Diversity for Dialogue and Development | Friday, 21 May 2027 | Worldwide |
| World Day for Glaciers | Sunday, 21 March 2027 | Worldwide |
| World Day for Safety and Health at Work | Wednesday, 28 April 2027 | Worldwide |
| World Day for the Prevention of and Healing from Child Sexual Exploitation, Abuse and Violence | Wednesday, 18 November 2026 | Worldwide |
| World Day of Social Justice | Saturday, 20 February 2027 | Worldwide |
| World Day to Combat Desertification and Drought | Thursday, 17 June 2027 | Worldwide |
| World Development Information Day | Saturday, 24 October 2026 | Worldwide |
| World Diabetes Day | Saturday, 14 November 2026 | Worldwide |
| World Down Syndrome Day | Sunday, 21 March 2027 | Worldwide |
| World Dracula Day | Wednesday, 26 May 2027 | Worldwide |
| World Drowning Prevention Day | Sunday, 25 July 2027 | Worldwide |
| World Duchenne Awareness Day | Tuesday, 7 September 2027 | Worldwide |
| World Elder Abuse Awareness Day | Tuesday, 15 June 2027 | Worldwide |
| World Emoji Day | Saturday, 17 July 2027 | Worldwide |
| World Engineering Day for Sustainable Development | Thursday, 4 March 2027 | Worldwide |
| World Environment Day | Saturday, 5 June 2027 | Worldwide |
| World Fair Play Day | Wednesday, 19 May 2027 | Worldwide |
| World Food Day | Friday, 16 October 2026 | Worldwide |
| World Food Safety Day | Monday, 7 June 2027 | Worldwide |
| World Football Day | Tuesday, 25 May 2027 | Worldwide |
| World Futures Day | Wednesday, 2 December 2026 | Worldwide |
| World Goth Day | Saturday, 22 May 2027 | Worldwide |
| World Habitat Day | Monday, 5 October 2026 | Worldwide |
| World Hand Hygiene Day | Wednesday, 5 May 2027 | Worldwide |
| World Health Day | Wednesday, 7 April 2027 | Worldwide |
| World Hearing Day | Wednesday, 3 March 2027 | Worldwide |
| World Heart Day | Tuesday, 29 September 2026 | Worldwide |
| World Hello Day | Saturday, 21 November 2026 | Worldwide |
| World Hepatitis Day | Wednesday, 28 July 2027 | Worldwide |
| World Horse Day | Sunday, 11 July 2027 | Worldwide |
| World Humanitarian Day | Thursday, 19 August 2027 | Worldwide |
| World Immunization Week | 24 April 2027 to 30 April 2027 | Worldwide |
| World Intellectual Property Day | Monday, 26 April 2027 | Worldwide |
| World Interfaith Harmony Week | 1 February 2027 to 7 February 2027 | Worldwide |
| World Introvert Day | Saturday, 2 January 2027 | Worldwide |
| World Juggling Day | Saturday, 19 June 2027 | Worldwide |
| World Kidney Day | Thursday, 11 March 2027 | Worldwide |
| World Kindness Day | Friday, 13 November 2026 | Worldwide |
| World Kiswahili Language Day | Wednesday, 7 July 2027 | Worldwide |
| World Lake Day | Friday, 27 August 2027 | Worldwide |
| World Logic Day | Thursday, 14 January 2027 | Worldwide |
| World Lung Day | Friday, 25 September 2026 | Worldwide |
| World Lymphoma Awareness Day | Tuesday, 15 September 2026 | Worldwide |
| World Malaria Day | Sunday, 25 April 2027 | Worldwide |
| World Maritime Day | Thursday, 24 September 2026 | Worldwide |
| World Meditation Day | Monday, 21 December 2026 | Worldwide |
| World Mental Health Day | Saturday, 10 October 2026 | Worldwide |
| World Meteorological Day | Tuesday, 23 March 2027 | Worldwide |
| World Metrology Day | Thursday, 20 May 2027 | Worldwide |
| World Migratory Bird Day | Saturday, 10 October 2026 | Worldwide |
| World NGO Day | Saturday, 27 February 2027 | Worldwide |
| World No Tobacco Day | Monday, 31 May 2027 | Worldwide |
| World Nutella Day | Friday, 5 February 2027 | Worldwide |
| World Obesity Day | Thursday, 4 March 2027 | Worldwide |
| World Oceans Day | Tuesday, 8 June 2027 | Worldwide |
| World Osteoporosis Day | Tuesday, 20 October 2026 | Worldwide |
| World Pancreatic Cancer Day | Thursday, 19 November 2026 | Worldwide |
| World Parkinson's Day | Sunday, 11 April 2027 | Worldwide |
| World Password Day | Thursday, 6 May 2027 | Worldwide |
| World Pasta Day | Sunday, 25 October 2026 | Worldwide |
| World Patient Safety Day | Thursday, 17 September 2026 | Worldwide |
| World Peace Day | Monday, 21 September 2026 | Worldwide |
| World Pharmacists Day | Friday, 25 September 2026 | Worldwide |
| World Philosophy Day | Thursday, 19 November 2026 | Worldwide |
| World Photography Day | Thursday, 19 August 2027 | Worldwide |
| World Pneumonia Day | Thursday, 12 November 2026 | Worldwide |
| World Poetry Day | Sunday, 21 March 2027 | Worldwide |
| World Population Day | Sunday, 11 July 2027 | Worldwide |
| World Portuguese Language Day | Wednesday, 5 May 2027 | Worldwide |
| World Post Day | Friday, 9 October 2026 | Worldwide |
| World Prematurity Day | Sunday, 15 November 2026 | Worldwide |
| World Press Freedom Day | Monday, 3 May 2027 | Worldwide |
| World PT Day | Wednesday, 8 September 2027 | Worldwide |
| World Pulses Day | Wednesday, 10 February 2027 | Worldwide |
| World Rabies Day | Monday, 28 September 2026 | Worldwide |
| World Radio Day | Saturday, 13 February 2027 | Worldwide |
| World Refugee Day | Sunday, 20 June 2027 | Worldwide |
| World Rural Development Day | Tuesday, 6 July 2027 | Worldwide |
| World Science Day for Peace and Development | Tuesday, 10 November 2026 | Worldwide |
| World Seagrass Day | Monday, 1 March 2027 | Worldwide |
| World Sepsis Day | Sunday, 13 September 2026 | Worldwide |
| World Sexual Health Day | Saturday, 4 September 2027 | Worldwide |
| World Sickle Cell Day | Saturday, 19 June 2027 | Worldwide |
| World Sleep Day | Friday, 19 March 2027 | Worldwide |
| World Smile Day | Friday, 2 October 2026 | Worldwide |
| World Snake Day | Friday, 16 July 2027 | Worldwide |
| World Soil Day | Saturday, 5 December 2026 | Worldwide |
| World Space Week | 4 October 2026 to 10 October 2026 | Worldwide |
| World Standards Day | Wednesday, 14 October 2026 | Worldwide |
| World Statistics Day | Sunday, 20 October 2030 | Worldwide |
| World Steelpan Day | Wednesday, 11 August 2027 | Worldwide |
| World Stroke Day | Thursday, 29 October 2026 | Worldwide |
| World Suicide Prevention Day | Friday, 10 September 2027 | Worldwide |
| World Sustainable Transport Day | Thursday, 26 November 2026 | Worldwide |
| World Teachers' Day | Monday, 5 October 2026 | Worldwide |
| World Telecommunication and Information Society Day | Monday, 17 May 2027 | Worldwide |
| World Television Day | Saturday, 21 November 2026 | Worldwide |
| World Theatre Day | Saturday, 27 March 2027 | Worldwide |
| World Toilet Day | Thursday, 19 November 2026 | Worldwide |
| World Tourism Day | Sunday, 27 September 2026 | Worldwide |
| World Tsunami Awareness Day | Thursday, 5 November 2026 | Worldwide |
| World Tuberculosis Day | Wednesday, 24 March 2027 | Worldwide |
| World Tuna Day | Sunday, 2 May 2027 | Worldwide |
| World Turkic Language Family Day | Tuesday, 15 December 2026 | Worldwide |
| World UFO Day | Friday, 2 July 2027 | Worldwide |
| World Vegan Day | Sunday, 1 November 2026 | Worldwide |
| World Vegan Month | 1 November 2026 to 30 November 2026 | Worldwide |
| World Water Day | Monday, 22 March 2027 | Worldwide |
| World Wetlands Day | Tuesday, 2 February 2027 | Worldwide |
| World Wildlife Day | Wednesday, 3 March 2027 | Worldwide |
| World Youth Skills Day | Thursday, 15 July 2027 | Worldwide |
| Yemen Unification Day | Saturday, 22 May 2027 | Yemen |
| Yuri's Night | Monday, 12 April 2027 | Worldwide |
| Zambia Independence Day | Saturday, 24 October 2026 | Zambia |
| Zero Discrimination Day | Monday, 1 March 2027 | Worldwide |
| Zimbabwe Independence Day | Sunday, 18 April 2027 | Zimbabwe |
| ZX Spectrum Day | Friday, 23 April 2027 | Worldwide |