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