International observances (January-April): List ofinternationalobservances [edit] Below is a list of days, years and decades that have been recognized asinternationalobservances by the United Nations, or by some other organizations that declareinternationalobservances but are not as widely recognized. Days[edit] January[edit] January 26 –InternationalCustomsDayrecognized by theWorld Customs Organization[2] January 27 –InternationalDayof Commemoration in Memory of the Victims of the Holocaust, recognized by the UN[3] January 31 –Street Children'sDay February[edit] February 2 –World WetlandsDay February 4 –World CancerDay, recognized by the UN and WHO[3][4] February 6 --InternationalDayof Zero Tolerance to Female Genital Mutilation, recognized by WHO[3][5] February 11 –WorldDayof the SickInstituted by PopeJohn Paul II February 13 –World RadioDay, recognized by the UN and UNESCO[3][6] February 20 –WorldDayof Social Justice, recognized by the UN[3] February 21 –InternationalMother LanguageDay, recognized by the UN and UNESCO[3] March[edit] March 1 - World Civil DefenceDay[7] March 8 –InternationalWomen'sDay, recognized by the UN[8] March 11 –WorldDayof Muslim Culture, Peace, Dialogue and Film March 14 –InternationalDayof Action for Rivers[9] March 14 –PiDay March 15 –World Consumer RightsDayWorld ContactDay March 20 –InternationalDayof theFrancophonie[10] March 20 –InternationalDayof Happiness, recognized by the UN[3][11] March 20 –World SparrowDay[12] March 21 –InternationalDayfor the Elimination of Racial Discrimination, recognized by the UN[3] March 21 –World PoetryDay, recognized by the UN and UNESCO[3][13] March 21 –InternationalDayof Nowruz, recognized by the UN[3][14] March 21 –World Down SyndromeDay, recognized by the UN[3][15] March 21 –World PuppetryDay, recognized byUNIMA March 21 –InternationalDayof Forests, recognized by the UN[3][16] March 22 –World WaterDay, recognized by the UN[3][17] March 23 –World MeteorologicalDay, recognized by the UN and WHO[3][18] March 24 –World TuberculosisDay, recognized by the UN and WHO[3][19] March 24 –InternationalDayfor the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims, recognized by the UN [3][20] March 25 –InternationalDayof Remembrance of the Victims of Slavery and the Transatlantic Slave Trade, recognized by the UN[3][21] March 25 –InternationalDayof Solidarity with Detained and Missing Staff Members, recognized by the UN[3][22] Third Friday of March –World SleepDay April[edit] April 1 –April Fool'sDay April 2 –World Autism AwarenessDay, recognized by the UN[3][23] April 2 –InternationalChildren's BookDay April 4 –InternationalDayfor Mine Awareness and Assistance in Mine Action, recognized by the UN[3][24] April 7 –Dayof Remembrance of the Victims of the Rwanda Genocide, recognized by the UN[3][25] April 7 –World HealthDay, recognized by the UN and WHO[3][26] April 8 –InternationalRomaniDay April 12 –InternationalDayof Human Space Flight, recognized by the UN[3][27] April 16 –World EntrepreneurshipDay[28] April 17 –World HemophiliaDay April 22 –InternationalMother EarthDay, recognized by the UN[3][29] April 23 –World Book and CopyrightDay, recognized by the UN and UNESCO[3][30] April 23 –English LanguageDay[3] April 24 –WorldDayfor Laboratory Animals April 25 –World MalariaDay, recognized by the UN and WHO[3][31] April 26 –World Intellectual PropertyDay, recognized by the UN and WIPO[3][32] April 28 –WorldDayfor Safety and Health at Work, recognized by the UN and ILO[3][33] April 29 –Dayof Remembrance for all Victims of Chemical Warfare, recognized by the UN[3][34] April 29 –InternationalDanceDay, recognized by UNESCO[35] April 30 –InternationalJazzDay, recognized by the UN[3][36]