When is International Day of Older Persons in United States?

October 1, World Vegetarian Day October 1, International Day of Older Persons October 2, International Day of Non-Violence October 3, Rosh Hashana October 4, Feast of St Francis of Assisi October 5, World Teachers' Day October 6, World Cerebral Palsy Day October 7, World Habitat Day October 7, Child Health Day October 9, World Post Day October 9, International Day for Natural Disaster Reduction October 9, Leif Erikson Day October 10, World Sight Day October 10, World Mental Health Day October 11, International Day of the Girl Child October 12, Yom Kippur October 13, Navy Birthday October 14, Native Americans' Day October 14, Indigenous People's Day October 14, Columbus Day October 15, White Cane Safety Day October 15, International Day of Rural Women October 16, World Food Day October 16, Boss's Day October 17, First Day of Sukkot October 17, International Day for the Eradication of Poverty October 18, Alaska Day October 19, Sweetest Day October 23, Last Day of Sukkot October 24, World Development Information Day October 24, Shmini Atzeret October 24, United Nations Day October 25, Nevada Day October 25, Simchat Torah October 27, World Day for Audiovisual Heritage October 29, World Stroke Day October 31, Halloween October 31, World Cities Day