Sep 4, 2021 World Sexual Health Day
Sep 5, 2021 International Day of Charity
Sep 8, 2021 International Literacy Day
Sep 9, 2021 California Admission Day
Sep 10, 2021 World Suicide Prevention Day
Sep 11, 2021 Carl Garner Federal Lands Cleanup Day
Sep 12, 2021 International Day for South-South Cooperation
Sep 12, 2021 National Grandparents Day
Sep 13, 2021 International Programmers' Day
Sep 15, 2021 International Day of Democracy
Sep 16, 2021 International Day for the Preservation of the Ozone Layer
Sep 17, 2021 Still's Disease Awareness Day
Sep 17, 2021 Constitution Day and Citizenship Day
Sep 17, 2021 National POW
Sep 18, 2021 Air Force Birthday
Sep 18, 2021 National CleanUp Day
Sep 21, 2021 First day of Sukkot
Sep 21, 2021 International Day of Peace
Sep 22, 2021 September Equinox
Sep 22, 2021 Emancipation Day
Sep 23, 2021 World Maritime Day
Sep 23, 2021 International Celebrate Bisexuality Day
Sep 24, 2021 Native American Day
Sep 24, 2021 American Indian Heritage Day
Sep 24, 2021 Michigan Indian Day
Sep 26, 2021 International Day for the Total Elimination of Nuclear Weapons
Sep 26, 2021 Gold Star Mother's Day
Sep 27, 2021 Last Day of Sukkot
Sep 27, 2021 World Tourism Day
Sep 27, 2021 American Indian Day
Sep 28, 2021 Shmini Atzeret
Sep 28, 2021 World Rabies Day
Sep 29, 2021 Simchat Torah
Sep 29, 2021 World Heart Day
Sep 17, 2021 MIA Recognition Day