Click on the September holidays listed in blue for more details.
| Holidays | Date | Details |
|---|---|---|
| Krishna Janmashtami 2018 | Sep 2 - Sunday | Hindu |
| Labor Day 2018 | Sep 3 - Monday | National holiday |
| International Literacy Day 2018 | Sep 8 - Saturday | Global |
| National Grandparents Day 2018 | Sep 9 - Sunday | Observance |
| Muharram 2018 | Sep 10 - Monday | Muslim |
| Rosh Hashana 2018 | Sep 10 - Monday | Jewish |
| Patriot Day 2018 | Sep 11 - Tuesday | Observance |
| Ganesh Chaturthi 2018 | Sep 12 - Wednesday | Jewish |
| International Day of Democracy 2018 | Sept 15 - Saturday | Global |
| Constitution Citizenship Day 2018 | Sep 17 - Monday | Observance |
| Yom Kippur 2018 | Sep 19 - Wednesday | Jewish |
| National POW/MIA Recognition Day 2018 | Sep 21 - Friday | Observance |
| Ashura 2018 | Sep 21 - Friday | Muslim |
| International Day of Peace 2018 | Sep 21 - Friday | Observance |
| Fall/ Spring - September equinox 2018 | Sep 23 - Sunday | Season |
| Sukkot 2018 | Sept 24 - Monday | Jewish |
| World Maritime Day 2018 | Sep 27 - Thursday | Observance |
| Gold Star Mother's Day 2018 | Sep 30 - Sunday | Observance |
