Sep 4, 2028 World Sexual Health Day
Sep 5, 2028 International Day of Charity
Sep 8, 2028 International Literacy Day
Sep 9, 2028 Carl Garner Federal Lands Cleanup Day
Sep 9, 2028 California Admission Day
Sep 10, 2028 World Suicide Prevention Day
Sep 10, 2028 National Grandparents Day
Sep 12, 2028 International Day for South-South Cooperation
Sep 12, 2028 International Programmers' Day
Sep 15, 2028 International Day of Democracy
Sep 15, 2028 National POW
Sep 16, 2028 International Day for the Preservation of the Ozone Layer
Sep 17, 2028 Still's Disease Awareness Day
Sep 17, 2028 Constitution Day and Citizenship Day
Sep 18, 2028 Air Force Birthday
Sep 18, 2028 Constitution Day and Citizenship Day observed
Sep 21, 2028 International Day of Peace
Sep 21, 2028 Rosh Hashana
Sep 21, 2028 Rosh Hashana
Sep 22, 2028 September Equinox
Sep 22, 2028 Emancipation Day
Sep 23, 2028 International Celebrate Bisexuality Day
Sep 24, 2028 Gold Star Mother's Day
Sep 25, 2028 American Indian Day
Sep 26, 2028 International Day for the Total Elimination of Nuclear Weapons
Sep 27, 2028 World Tourism Day
Sep 28, 2028 World Maritime Day
Sep 28, 2028 World Rabies Day
Sep 29, 2028 World Heart Day
Sep 29, 2028 Native American Day
Sep 29, 2028 American Indian Heritage Day
Sep 29, 2028 Michigan Indian Day
Sep 15, 2028 MIA Recognition Day