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Rosh Hashana
Jewish holidayRosh Hashanah is the Jewish New Year. Many Jewish-run organizations in the US are closed during the two-day celebration.
Search on AmazonInternational Day for South-South Cooperation
United Nations observanceThe United Nations Day for South-South Cooperation is observed on September 12 each year.
Search on AmazonCarl Garner Federal Lands Cleanup Day
ObservanceCarl Garner Federal Lands Cleanup Day encourages people in the United States to participate in cleaning up the federal lands. It is observed on the first Saturday after Labor Day.
Search on AmazonNative American Day
State ObservanceNative Americans' Day, on the second Monday of October, is celebrated some parts of the United States in lieu of Columbus Day.
Search on AmazonRosh Hashana
State HolidayRosh Hashanah is the Jewish New Year. Many Jewish-run organizations in the US are closed during the two-day celebration.
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International Programmers' Day
9/13/2026
Worldwide observanceMany people celebrate International Programmers’ Day on January 7, while others observe this event on the 256th day of the year, usually on September 13 or on September 12 in leap years.
Search on AmazonNational Grandparents Day
9/13/2026
ObservanceNational Grandparents Day is celebrated on the first Sunday of September after Labor Day in the United States.
Search on AmazonConstitution Commemoration Day
9/13/2026
State HolidayConstitution Day and Citizenship Day is a combined event that occurs in the United States on September 17 each year.
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Search on AmazonGanesh Chaturthi
9/14/2026
Hindu HolidayGanesh Chaturthi is the great Ganesha festival that celebrates the birthday of Lord Ganesha during the Hindu Month of Bhadra, which usually falls between mid-August and mid-September. It is also known as Vinayaka Chaturthi and can last up to 10 days.
Search on AmazonInternational Day of Democracy
9/15/2026
United Nations observanceThe United Nations’ (UN) International Day of Democracy is observed on September 15 each year.
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