Anniversaries
International days 2027
The world and international days of 2027, date by date.
Included are the days proclaimed by an international body (the UN, UNESCO, the WHO and others) and the popular celebrations observed on the same date in many countries.
January
- Mon 4 · January 4 World Braille Day UN
- Sun 24 · January 24 International Day of Education UN
- Wed 27 · January 27 International Day of Commemoration in Memory of the Victims of the Holocaust UN
February
- Thu 4 · February 4 World Cancer Day UICC
- Thu 11 · February 11 International Day of Women and Girls in Science UN
- Sat 13 · February 13 World Radio Day UNESCO
- Sat 20 · February 20 World Day of Social Justice UN
- Sun 21 · February 21 International Mother Language Day UNESCO
March
- Mon 1 · March 1 Zero Discrimination Day UNAIDS
- Wed 3 · March 3 World Wildlife Day UN
- Thu 4 · March 4 World Engineering Day for Sustainable Development UNESCO
- Sun 14 · March 14 International Day of Mathematics (Pi Day) UNESCO
- Tue 16 · March 16 World Social Work Day IFSW
- Sat 20 · March 20 International Day of Happiness UN
- Sun 21 · March 21 World Poetry Day UNESCO
- Sun 21 · March 21 International Day of Forests UN
- Sun 21 · March 21 International Day for the Elimination of Racial Discrimination UN
- Sun 21 · March 21 World Down Syndrome Day UN
- Mon 22 · March 22 World Water Day UN
- Tue 23 · March 23 World Meteorological Day WMO
- Wed 24 · March 24 World Tuberculosis Day WHO
- Sat 27 · March 27 World Theatre Day ITI
April
- Fri 2 · April 2 World Autism Awareness Day UN
- Fri 2 · April 2 International Children’s Book Day IBBY
- Tue 6 · April 6 International Day of Sport for Development and Peace UN
- Wed 7 · April 7 World Health Day WHO
- Mon 12 · April 12 International Day of Human Space Flight UN
- Fri 23 · April 23 World Book and Copyright Day UNESCO
- Fri 23 · April 23 Spanish Language Day UN
- Sat 24 · April 24 World Veterinary Day WVA
- Sun 25 · April 25 World Malaria Day WHO
- Mon 26 · April 26 World Intellectual Property Day WIPO
- Wed 28 · April 28 World Day for Safety and Health at Work ILO
- Thu 29 · April 29 International Dance Day ITI
- Fri 30 · April 30 International Jazz Day UNESCO
May
- Sat 1 · May 1 International Workers’ Day Popular celebration
- Mon 3 · May 3 World Press Freedom Day UNESCO
- Tue 4 · May 4 International Firefighters' Day Popular celebration
- Wed 5 · May 5 International Day of the Midwife ICM
- Sat 8 · May 8 World Red Cross and Red Crescent Day IFRC
- Wed 12 · May 12 International Day of the Nurse ICN
- Sat 15 · May 15 International Day of Families UN
- Mon 17 · May 17 World Telecommunication and Information Society Day ITU
- Tue 18 · May 18 International Museum Day ICOM
- Thu 20 · May 20 World Bee Day UN
- Fri 21 · May 21 World Day for Cultural Diversity for Dialogue and Development UNESCO
- Sat 22 · May 22 International Day for Biological Diversity UN
- Tue 25 · May 25 Africa Day African Union
- Mon 31 · May 31 World No Tobacco Day WHO
June
- Tue 1 · June 1 World Mothers’ and Fathers’ Day UN
- Thu 3 · June 3 World Bicycle Day UN
- Sat 5 · June 5 World Environment Day UN
- Tue 8 · June 8 World Oceans Day UN
- Sat 12 · June 12 World Day Against Child Labour ILO
- Mon 14 · June 14 World Blood Donor Day WHO
- Sun 20 · June 20 World Refugee Day UN
- Mon 21 · June 21 International Day of Yoga UN
- Mon 21 · June 21 International Solstice Celebration Day UN
- Mon 21 · June 21 Music Day Popular celebration
- Wed 23 · June 23 Olympic Day IOC
- Fri 25 · June 25 Day of the Seafarer IMO
- Sat 26 · June 26 International Day against Drug Abuse and Illicit Trafficking UN
- Wed 30 · June 30 International Asteroid Day UN
July
- Sun 11 · July 11 World Population Day UN
- Sun 18 · July 18 Nelson Mandela International Day UN
- Tue 20 · July 20 International Moon Day UN
- Tue 20 · July 20 World Chess Day UN
- Fri 30 · July 30 International Day of Friendship UN
- Fri 30 · July 30 World Day Against Trafficking in Persons UN
- Fri 30 · July 30 System Administrator Day Popular celebration
August
- Mon 9 · August 9 International Day of the World’s Indigenous Peoples UN
- Thu 12 · August 12 International Youth Day UN
- Thu 19 · August 19 World Humanitarian Day UN
- Thu 19 · August 19 World Photography Day Popular celebration
- Sun 29 · August 29 International Day Against Nuclear Tests UN
September
- Sun 5 · September 5 International Day of Charity UN
- Wed 8 · September 8 International Literacy Day UNESCO
- Mon 13 · September 13 Programmer's Day Popular celebration
- Wed 15 · September 15 International Day of Democracy UN
- Thu 16 · September 16 International Day for the Preservation of the Ozone Layer UN
- Tue 21 · September 21 International Day of Peace UN
- Sat 25 · September 25 World Pharmacist Day FIP
- Mon 27 · September 27 World Tourism Day UN Tourism
- Wed 29 · September 29 World Heart Day WHF
- Thu 30 · September 30 International Day of Translation UN
- Thu 30 · September 30 World Maritime Day IMO
October
- Fri 1 · October 1 International Day of Older Persons UN
- Fri 1 · October 1 International Coffee Day ICO
- Sat 2 · October 2 International Day of Non-Violence UN
- Mon 4 · October 4 World Animal Day Popular celebration
- Mon 4 · October 4 World Architecture Day UIA
- Tue 5 · October 5 World Teachers' Day UNESCO
- Sat 9 · October 9 World Post Day UPU
- Sun 10 · October 10 World Mental Health Day WHO
- Mon 11 · October 11 International Day of the Girl UN
- Wed 13 · October 13 International Day for Disaster Risk Reduction UN
- Fri 15 · October 15 International Day of Rural Women UN
- Sat 16 · October 16 World Food Day FAO
- Sun 17 · October 17 International Day for the Eradication of Poverty UN
- Sun 24 · October 24 United Nations Day UN
- Wed 27 · October 27 World Day for Audiovisual Heritage UNESCO
- Sun 31 · October 31 World Cities Day UN
November
- Fri 5 · November 5 World Tsunami Awareness Day UN
- Wed 10 · November 10 World Science Day for Peace and Development UNESCO
- Sun 14 · November 14 World Diabetes Day UN
- Tue 16 · November 16 International Day for Tolerance UNESCO
- Wed 17 · November 17 International Students' Day Popular celebration
- Thu 18 · November 18 World Philosophy Day UNESCO
- Fri 19 · November 19 International Men's Day Popular celebration
- Sat 20 · November 20 World Children's Day UN
- Sun 21 · November 21 World Television Day UN
- Thu 25 · November 25 International Day for the Elimination of Violence against Women UN
December
- Wed 1 · December 1 World AIDS Day WHO
- Thu 2 · December 2 International Day for the Abolition of Slavery UN
- Fri 3 · December 3 International Day of Persons with Disabilities UN
- Sun 5 · December 5 International Volunteer Day UN
- Sun 5 · December 5 World Soil Day UN
- Tue 7 · December 7 International Civil Aviation Day ICAO
- Thu 9 · December 9 International Anti-Corruption Day UN
- Fri 10 · December 10 Human Rights Day UN
- Sat 11 · December 11 International Day of Mountains UN
- Sat 18 · December 18 International Migrants Day UN
- Mon 20 · December 20 International Day of Human Solidarity UN