September marks the start of Hispanic Heritage Month which is observed from September 15 to October 15 and corresponds with Mexican Independence Day which is celebrated on September 16 and recognizes the revolution in 1810 that ended Spanish dictatorship in Mexico.  The second week in September is National Historically Black Colleges and Universities Week, a weeklong celebration of the vital role HBCUs play in molding Black leaders, encouraging high-school aged youth to enroll into HBCUs, providing scholarship dollars for matriculation, and sustaining a pipeline for employment from undergraduate to corporate America.

September 4 is Labor Day honoring the contribution that workers have made to the United States. September 5 to 6 is Krishna Janmashtami, a Hindu celebration of Lord Vishnu’s most powerful human incarnations—Krishna, the god of love and compassion. September 11 is  Paryushana  Parvarambha, a Jain festival lasting eight to ten days that is observed through meditation and fasting; it focuses on spiritual upliftment, pursuit of salvation, and a deeper understanding of the religion. September 11 is also Ethiopian New Year which is celebrated by Rastafarians who believe that Ethiopia is their spiritual home. September 14 is Elevation of the Life Giving Cross (Holy Cross); in some Christian denominations, this is a day that commemorates the cross used in the crucifixion of Jesus.

September 15 to 17 (sundown to sundown) is Rosh Hashanah, the Jewish New Year celebration marking the creation of the world. September 18 is Ganesh Chaturthi, a Hindu holiday lasting approximately ten days in which the elephant-headed Hindu god is praised and given offerings. September 18 is also International Equal Pay Day; recognized for the first time in September, 2020, the day represents the long-standing efforts toward the achievement of equal pay for work of equal value. It further builds on the United Nations’ commitment to human rights and its efforts to eliminate all forms of discrimination. 

September 21 is Mabon, a celebration of the vernal equinox commemorated by Pagans and Wiccans. September 22 is also Native American Day, a federal holiday observed annually on the fourth Friday in September in the state of California and Nevada and on the second Monday in October in South Dakota and Oklahoma. September 24 to 25 (sundown to sundown) is Yom Kippur, the holiest day on the Jewish calendar; Yom Kippur is a day of atonement marked by fasting and ceremonial repentance. September 26 to 27 is Mawlid Al-Nabi, the observance of the birthday of Islam founder, the prophet Muhammad; Shi’a Muslims celebrate it five days later than Sunni Muslims. September 27 is also Meskel, a religious holiday in the Ethiopian Orthodox and Eritrean Orthodox Churches that commemorates the discovery of the True Cross by the Roman Empress Helena in the fourth century.

September 28 is Teacher’s Day in Taiwan; this day is used to honor teachers’ contributions to their students and to society in general. People often express their gratitude to their teachers by paying them a visit or sending them a card. The Birth of Confucius, the model master educator in ancient China, is also commemorated on this date. September 28 is also Eid Milad un-Nabi, an Islamic holiday commemorating the birthday of the prophet Muhammad; during this celebration, homes and mosques are decorated, large parades take place, and those observing the holiday participate in charity events. September 29 is Michaelmas, or the Feast of Michael and All Angels; a minor Christian festival dedicated to Archangel Michael that is observed in some Western liturgical calendars. September 29 to October 6 is Sukkot, a seven-day Jewish festival giving thanks for the fall harvest.