List of Teachers' Days

Teachers' Day (Argentina)

Patriot Day

September 11 attacks-related observances (United States):
Patriot Day

September 11 National Day of Service

September 11 attacks-related observances (United States):
National Day of Service and Remembrance

Nayrouz

Nayrouz (Coptic Orthodox Church), September 12 on leap years.

National Day of Catalonia

National Day (Catalonia)

Enkutatash

Enkutatash falls on this day if it is not a leap year. Celebrated on the first day of Mäskäräm. (Ethiopia, Eritrea, Rastafari)

List of observances in the United States by presidential proclamation

Emergency Number Day (United States)

Muhammad Ali Jinnah

Death Anniversary of Quaid-e-Azam Muhammad Ali Jinnah (Pakistan)

September 11 (Eastern Orthodox liturgics)

Christian feast days:
September 11 (Eastern Orthodox liturgics)

Theodora of Alexandria

Christian feast days:
Theodora of Alexandria

Sperandia

Christian feast days:
Sperandia

Protus and Hyacinth

Christian feast days:
Protus and Hyacinth

Patiens of Lyon

Christian feast days:
Patiens of Lyon

Paphnutius of Thebes

Christian feast days:
Paphnutius of Thebes (Roman Catholic Church)

Our Lady of Coromoto

Christian feast days:
Our Lady of Coromoto