When is World Post Day in United States?

October 1, International Day of Older Persons October 1, World Vegetarian Day October 2, Yom Kippur October 2, International Day of Non-Violence October 4, Feast of St Francis of Assisi October 5, World Teachers' Day October 6, World Habitat Day October 6, Child Health Day October 6, World Cerebral Palsy Day October 7, First Day of Sukkot October 8, International Day for Natural Disaster Reduction October 9, World Post Day October 9, Leif Erikson Day October 9, World Sight Day October 10, World Mental Health Day October 11, International Day of the Girl Child October 13, Navy Birthday October 13, Columbus Day October 13, Last Day of Sukkot October 13, Indigenous People's Day October 13, Native Americans' Day October 14, Shmini Atzeret October 15, International Day of Rural Women October 15, White Cane Safety Day October 15, Simchat Torah October 16, World Food Day October 16, Boss's Day October 17, International Day for the Eradication of Poverty October 17, Alaska Day October 18, Sweetest Day October 18, Alaska Day October 20, World Statistics Day October 24, United Nations Day October 24, World Development Information Day October 27, World Day for Audiovisual Heritage October 29, World Stroke Day October 31, Nevada Day October 31, World Cities Day October 31, Halloween