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Thursday, October 22, 2026
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Library at a glance
259 briefs · 43 iconic · 5 categories · 54 countries
Library by month
259 briefs across the calendar - click a month to filter
Showing 66 briefs in this category.
Clear filtersNew Year - January 1, the Gregorian calendar New Year, origins, and how it is observed worldwide
New Year on January 1 marks the start of the Gregorian calendar year. A federal public holiday in most countries, observed with midnight countdown, family gatherings, fireworks, and resolutions. Replaced older regional new years over the 16th-20th centuries.
Earth Day - April 22, the modern environmental observance that started with a 1969 teach-in and now reaches more than 190 countries
Earth Day on April 22 is the annual international observance of the modern environmental movement, founded in 1970 by US Senator Gaylord Nelson and celebrated in more than 190 countries. It falls during World Earth Week and overlaps with the March equinox Earth Day observed by the United Nations.
Giving Tuesday - the Tuesday after US Thanksgiving, and how the giving-day movement spread
Giving Tuesday on the Tuesday after US Thanksgiving (Nov 24, 2026) is an international day of charitable giving, founded in 2012 by the 92nd Street Y and the United Nations Foundation. Observed in the United States, Canada, the UK, and 60+ countries. Not a federal holiday.
International Day of Education - January 24, the UN day for global education
International Day of Education on January 24 is the UN International Day celebrating education as a fundamental human right and global public good. Established by UNGA Resolution 73/25 in 2019, marked by UNESCO. Not a public holiday.
International Day of Peace - September 21, the UN-recognised annual observance for peace and non-violence
International Day of Peace on September 21 is the UN-recognised annual observance for peace and non-violence, established in 1981 by the UN General Assembly and observed worldwide with a one-minute silent pause at noon local time. The day is one of the oldest UN-proclaimed international days.
International Day of the Girl Child - October 11, the UN day for girls' rights
International Day of the Girl Child on October 11 is the UN International Day recognizing girls' rights and the unique challenges girls face globally. Established by UNGA Resolution 66/170 in 2011. Observed in 100+ countries. Not a public holiday.
International Day of Yoga - June 21, the UN observance
International Day of Yoga on June 21 marks the summer solstice and is observed globally with yoga sessions led by the United Nations. Established in 2014 at India's initiative. India runs the largest official mass session each year.
International Women's Day - March 8, the global day celebrating women's achievements and calling for gender equality
International Women's Day on March 8 is a global day celebrating women's social, economic, cultural, and political achievements. Observed since the early 1900s, a public holiday in several countries, and an occasion for activism on gender equality in many more.
May Day - May 1, International Workers Day and the traditional spring festival across Europe
May Day on May 1 is observed worldwide as both International Workers Day (a labour movement commemoration since 1890) and a traditional spring festival (May Day / Beltane in Celtic cultures, Maifest in Germanic cultures). A public holiday in most countries outside the United States.
New Years Eve - December 31, countdown, fireworks, and how the world rings in the new year
New Years Eve on December 31 is the night before the Gregorian New Year, observed globally with midnight countdown, fireworks, family gatherings, and large public celebrations. Not a federal holiday in itself, but a major cultural and commercial event.
Nobel Prize - October announcements of the world’s highest-profile academic awards
The Nobel Prize is a set of annual international awards recognising outstanding contributions in Physics, Chemistry, Physiology or Medicine, Literature, Peace, and Economic Sciences. Established by Alfred Nobel’s 1895 will, first awarded in 1901. Announcements run in early October; the Stockholm ceremony is December 10.
Star Wars Day - May the 4th, the 1979 pun origin, and how fans observe May 4 (and Revenge of the Fifth)
Star Wars Day (May 4) is an informal fan holiday observed by Star Wars enthusiasts worldwide, playing on the line "May the Force be with you" sounding like "May the Fourth." Originated in a 1979 UK newspaper congratulation to Margaret Thatcher. Not a public holiday; observed with film marathons, cosplay, and Disney/Lucasfilm promotional events.
World Cancer Day - February 4, the Union for International Cancer Control awareness day
World Cancer Day on February 4 is the Union for International Cancer Control (UICC) global awareness day. Established at the 2000 World Cancer Summit in Paris, observed in 120+ countries. Not a public holiday.
World Emoji Day - July 17 origins, the 2014 calendar plot, and how the day is observed
World Emoji Day is celebrated on July 17 in tech circles and on social platforms, chosen because the calendar emoji is shown as July 17 on iOS. Founded in 2014 by Jeremy Burge of Emojipedia. Not a public holiday; observed with new emoji releases, marketing campaigns, and Twitter/X trending hashtags.
World Food Day - October 16, the FAO founding anniversary
World Food Day on October 16 marks the anniversary of the founding of the UN Food and Agriculture Organization (FAO) in 1945. Observed globally with FAO campaigns on hunger, food security, and sustainable agriculture.
World Health Day - April 7, the founding anniversary of the WHO
World Health Day on April 7 marks the anniversary of the World Health Organization (WHO), founded in 1948. The day is observed globally with WHO campaigns focusing on a specific public health theme each year.
World Heart Day - September 29, the World Heart Federation global awareness day
World Heart Day on September 29 is the World Heart Federation global awareness day for cardiovascular disease. Established in 1999 by WHF president Antoni Bayes de Luna, observed in 50+ countries. Not a public holiday.
World Kindness Day - November 13, the UN-recognised international observance
World Kindness Day on November 13 is an international observance founded by the World Kindness Movement (1997) and recognised by the UN General Assembly (kindness-related) in recent declarations. Held the same day as NSW Randwick Races and ahead of World Philosophy Day (Nov 18).
World Mental Health Day - October 10 origins, the WHO campaign, and how it is observed
World Mental Health Day is observed on October 10 each year, established by the World Health Organization and World Federation for Mental Health in 1992. Each year has a theme; 2025 focuses on access to mental health services in humanitarian emergencies. Observed with awareness campaigns, public screenings, and policy pledges.
World Ocean Day - June 8, the UN observance for marine protection and the 30x30 target
World Ocean Day on June 8 is the United Nations annual observance of the role of the ocean in sustaining life on Earth. Established by the UN General Assembly in 2008. Coordinates with international ocean science and policy milestones including the 2023 Treaty of the High Seas.
World Refugee Day - June 20, the UNHCR-led global observance
World Refugee Day on June 20 marks the anniversary of the 1951 UN Convention relating to the Status of Refugees. Observed globally with UNHCR campaigns. Africa Day, World Environment Day, and World Refugee Day all cluster in mid-to-late June.
World Soil Day - December 5, the UN observance of soils, food security, and the 2024 African Decade
World Soil Day on December 5 is the UN-recognised annual observance of soil health, food security, and sustainable land management. Established by the UN General Assembly in 2014. Anchors the Global Soil Partnership and the African Fertilizer and Soil Health Action Plan (2024).
World Space Week - October 4 to 10, the UN-declared annual celebration of space science and technology
World Space Week is a UN-declared international observance held every October 4 through 10. It marks the 1957 launch of Sputnik 1 (October 4) and the 1967 Outer Space Treaty signing (October 10). Coordinated by the World Space Week Association, the week involves 90+ countries through 8,000+ events organized by space agencies, schools, museums, and astronomy clubs. Not a public holiday.
World Teachers' Day - October 5, the UNESCO day for teachers and education
World Teachers' Day on October 5 is the UNESCO International Day for teachers, marking the 1966 adoption of the ILO/UNESCO Recommendation concerning the Status of Teachers. Observed in 100+ countries. Not a public holiday.
World Toilet Day - November 19, the UN day for sanitation and hygiene
World Toilet Day on November 19 is the UN International Day for the recognition of sanitation, hygiene, and access to safe toilets. Established by UNGA Resolution 67/291 in 2013, coordinated by UN-Water. Not a public holiday.
Human Rights Day - December 10, the UN day marking the 1948 Universal Declaration
Human Rights Day on December 10 commemorates the adoption of the Universal Declaration of Human Rights by the UN General Assembly in 1948. Recognized annually by the United Nations and over 100 countries. Not a public holiday in most countries, though it is a public holiday in South Africa.
International Coffee Day - October 1, the annual observance for the world's second-most-traded commodity after crude oil
International Coffee Day on October 1 is the annual sector-wide observance organised by the International Coffee Organization (ICO) and 75+ member coffee associations to celebrate coffee growers, promote sustainable sourcing, and run consumer-facing campaigns. First launched in 2014, it overlaps with China's National Day and runs alongside World Vegetarian Day.
International Dance Day - April 29, the global celebration of dance
International Dance Day on April 29 is a global celebration of dance as an art form, observed by the International Dance Council (CID-UNESCO) and dance communities worldwide. Established in 1982. Not a public holiday.
International Day of Charity - September 5, the UN day for charitable giving
International Day of Charity on September 5 is the UN International Day recognizing the role of charity in alleviating humanitarian crises and human suffering. Established by UNGA Resolution 67/105 in 2012, marks the anniversary of Mother Teresa's death. Not a public holiday.
International Day of Forests - March 21, the UN-recognised day celebrating and raising awareness of forests
International Day of Forests on March 21 is a UN-recognised annual day first observed in 2012, established by UN General Assembly Resolution 67/200 in 2012. Celebrates the importance of all types of forests, raises awareness of deforestation and biodiversity loss. Adopted from the World Forestry Day (1971). Not a public holiday.
International Day of Friendship - July 30, the UN day promoting friendship across cultures
International Day of Friendship on July 30 is a UN-recognised day established by UN General Assembly Resolution 65/275 in 2004. Proclaimed by the UN in 2011. Promotes friendship across cultures, countries, and ideologies to inspire peace. Not a public holiday.
International Day of Happiness - March 20, the UN resolution, and why Bhutan led the campaign
International Day of Happiness on March 20 is a UN-recognised international observance established by UN General Assembly Resolution 66/281 in 2012. Inspired by Bhutan's Gross National Happiness index. Observed worldwide with happiness-themed events, reports, and the UN's annual World Happiness Report. Not a public holiday.
International Day of Light - May 16, the UNESCO day marking the anniversary of the first laser
International Day of Light on May 16 is a UNESCO-recognised annual day first observed in 2018 to mark the anniversary of the first successful laser operation by Theodore Maiman on May 16, 1960. Celebrates light science, photonics, and the role of light in technology, culture, and sustainable development. Not a public holiday.
International Day of the World’s Indigenous Peoples - August 9, UN observance since 1994
International Day of the World’s Indigenous Peoples on August 9 is a UN observance established in 1994 to mark the 1982 Working Group on Indigenous Populations. UNESCO, the UN Permanent Forum on Indigenous Issues, and OHCHR run programming. Each year has an annual theme. Not a public holiday.
International Day of Women and Girls in Science - February 11, UN observance since 2015
International Day of Women and Girls in Science on February 11 is a UN observance established in 2015 to promote gender equality in STEM. UNESCO and UN Women lead programming. Each year the day highlights a theme - 2024 focused on women in AI. Not a public holiday.
International Holocaust Remembrance Day - January 27, UN day since 2005
International Holocaust Remembrance Day on January 27 is a United Nations day of memorial established in 2005 marking the 1945 liberation of Auschwitz-Birkenau. Observed annually in UN member states with ceremonies, educational programmes, and moments of silence. Not a public holiday.
International Literacy Day - September 8, the UNESCO observance on literacy
International Literacy Day on September 8 is a UNESCO-recognised international observance celebrating literacy as a fundamental human right. Established by UNESCO in 1965. Not a public holiday.
International Migrants Day - December 18, UN observance since 1990
International Migrants Day on December 18 is a United Nations observance established in 1990 to mark the adoption of the International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families. Not a public holiday.
International Mountain Day - December 11, the UN day raising awareness of mountain ecosystems
International Mountain Day on December 11 is a UN-recognised day established by UN General Assembly Resolution 57/245 in 2002. First observed in 2003. Raises awareness of the importance of mountain ecosystems, the role of mountains in sustainable development, and the challenges faced by mountain dwellers.
International Volunteer Day - December 5, UN observance celebrating volunteer work since 1985
International Volunteer Day on December 5 is a United Nations observance established in 1985 to recognise the contribution of volunteers to society. Each year the UN Volunteers programme publishes a flagship report. Not a public holiday.
International Youth Day - August 12, UN observance of young people since 1999
International Youth Day on August 12 is a United Nations observance established in 1999 to recognise the contributions of young people to society and to highlight challenges they face. Each year carries a specific theme. Not a public holiday.
World AIDS Day - December 1, the WHO observance on HIV awareness
World AIDS Day on December 1 is the WHO annual observance of HIV prevention, treatment, and stigma reduction. Established by the World Health Organization in 1988, it is one of the longest-running international health awareness days. Not a public holiday.
World Bee Day - May 20, UN observance raising pollinator awareness since 2017
World Bee Day on May 20 is a UN observance established in 2017 to raise awareness of the importance of bees and other pollinators for food security. The date marks the birth of Anton Janša, the 18th-century Slovenian pioneer of modern beekeeping. Each year has an annual theme. Not a public holiday.
World Book Day - April 23, the UNESCO-recognised international observance celebrating authors, books, and reading
World Book Day on April 23 is the UNESCO-recognised international observance celebrating authors, books, and reading. Founded in 1995 in Catalonia, observed in 100+ countries, and a major annual moment for the publishing industry, particularly through the UK and Ireland token-gift programme that gives 15 million books to children each year.
World Braille Day - January 4, the UN day for Louis Braille and accessible literacy
World Braille Day on January 4 is the UN International Day recognizing the importance of Braille as a means of communication for blind and partially sighted people. Established in 2019 by UNGA Resolution 73/161, marks the 1809 birthday of Louis Braille. Not a public holiday.
World Cities Day - October 31, the UN day for sustainable urban development
World Cities Day on October 31 is the UN International Day for sustainable urban development, established by UNGA Resolution 68/239 in 2013. Coordinated by UN-Habitat, observed in 150+ cities. Not a public holiday.
World Day Against Child Labour - June 12, the ILO day targeting child labour worldwide
World Day Against Child Labour on June 12 is an ILO-recognised day established by the International Labour Organization in 2002. First observed on June 12, 2002. Focuses on the global campaign against child labour. Supports the 2025 Target of ending all forms of child labour. Not a public holiday.
World Diabetes Day - November 14, IDF observance since 1991 marking insulin co-discoverer birthday
World Diabetes Day on November 14 is an International Diabetes Federation observance established in 1991. The date marks the birthday of Frederick Banting, who co-discovered insulin in 1921. Each year the IDF focuses on a theme - 2024-2026 cycle is “Diabetes and Well-being.” Not a public holiday.
World Environment Day - June 5, the UN observance on environmental protection
World Environment Day on June 5 is the UN's principal observance for environmental awareness and action. Established by the UN General Assembly in 1972, first celebrated in 1974, it is hosted annually by a different country. Not a public holiday.
World Hello Day - November 21, the 1973 Peace Challenge greeting across barriers
World Hello Day on November 21 is an annual global observance started in 1973 by Brian and Michael McMahon during the Arab-Israeli war. Anyone to greet ten people on the day, regardless of organizational, political, religious, or other differences. Not a public holiday.
World Hepatitis Day - July 28, WHO observance raising viral hepatitis awareness since 2010
World Hepatitis Day on July 28 is a WHO observance launched in 2010 to raise awareness of viral hepatitis. The date honours Nobel laureate Baruch Blumberg, who discovered the hepatitis B virus. Each year the WHO publishes a flagship global report. Not a public holiday.
World Maritime Day - last Thursday of September, IMO observance since 2017
World Maritime Day on the last Thursday of September is an International Maritime Organization observance established in 2017 to highlight the importance of shipping safety, security, and environmental protection. Established to mark the founding date of the IMO. Not a public holiday.
World Neglected Tropical Diseases Day - January 30, WHO observance launched in 2020
World Neglected Tropical Diseases Day on January 30 is a WHO observance launched in 2020 to mobilise action against diseases that affect more than one billion people. The date marks the 2012 London Declaration on NTDs. Each year the WHO publishes a flagship progress report. Not a public holiday.
World Philosophy Day - November 15, UNESCO philosophy observance day since 2005
World Philosophy Day on the third Thursday of November is a UNESCO observance established in 2005 that promotes philosophical reflection across cultures. Schools, universities, and academic societies host lectures and panels. Not a public holiday.
World Poetry Day - March 21, the UNESCO observance on poetry
World Poetry Day on March 21 is a UNESCO-recognised international observance celebrating poetry as a cultural and linguistic heritage. Established by UNESCO in 1999. Not a public holiday.
World Population Day - July 11, the UN observance on demographic trends
World Population Day on July 11 is the United Nations annual observance of demographic issues. Established by the UN General Assembly in 1989 to mark the day the world population reached 5 billion (1987), it focuses each year on a different demographic theme. Not a public holiday.
World Press Freedom Day - May 3, the UNESCO declaration, and why journalists mark it
World Press Freedom Day on May 3 is a UNESCO-recognised international observance established in 1993. Each year the UN/UNESCO Guillermo Cano World Press Freedom Prize is awarded. Observed with conferences, press-club events, and the Global Conference on Press Freedom hosted by a rotating UN member state. Not a public holiday.
World Press Photo Day - May 3, photojournalism and visual journalism
World Press Photo Day on May 3 spotlights photojournalism, the World Press Photo annual contest, and the role of visual journalism in informing the public. Observed alongside World Press Freedom Day. Not a public holiday.
World Radio Day - February 13, the UNESCO observance of radio broadcasting
World Radio Day on February 13 is the UNESCO observance of radio as a medium. Established by UNESCO in 2011 and proclaimed by the UN General Assembly in 2012, it commemorates the 1946 founding of United Nations Radio. The day highlights radio's role in informing communities and providing access to information in emergencies.
World Sleep Day - the World Sleep Society observance on sleep health
World Sleep Day is the annual World Sleep Society observance of sleep health, sleep disorders, and the social importance of sleep. Held on the Friday before the Spring Equinox (March 14-15 most years). Established in 2008 by the World Sleep Society, hosted in different cities annually.
World Statistics Day - October 20, the UN-recognised day celebrating official statistics
World Statistics Day on October 20 is a UN-recognised international day established by the UN Statistical Commission in 2010 to highlight the role of official statistics in national development. First observed on October 20, 2010; second edition October 20, 2015; third on October 20, 2020. Not a public holiday.
World Television Day - November 21, the UN day for television as a global medium
World Television Day on November 21 is the UN International Day recognizing television as a symbol of communication and globalization. Marked annually since 1996 by UNGA Resolution 51/205. Not a public holiday.
World Tourism Day - September 27, the UNWTO observance on global tourism
World Tourism Day on September 27 is the UN World Tourism Organization's annual observance of the global tourism industry. Established by the UNWTO General Assembly in 1980, it is hosted annually by a different country and focuses each year on a different aspect of sustainable tourism. Not a public holiday.
World Water Day - March 22, the UN observance on water and sanitation
World Water Day on March 22 is a UN-recognised international observance focused on the importance of freshwater and sustainable water management. Established by the UN General Assembly in 1992, first celebrated in 1993. Not a public holiday.
World Wildlife Day - March 3, the UN observance on wild fauna and flora
World Wildlife Day on March 3 is a UN-recognised international observance celebrating wild animals and plants. Established by the UN General Assembly in 2013. Not a public holiday.
World Youth Skills Day - July 15, UN observance for skills development since 2014
World Youth Skills Day on July 15 is a United Nations observance established in 2014 to highlight the strategic importance of equipping young people with skills for employment, decent work, and entrepreneurship. Held during the school-leaving season globally. Not a public holiday.