September is the ninth month in the Gregorian calendar and has 30 days. It marks the start of the academic year in many countries—students return to school from their summer break—and the start of the church year in the Eastern Orthodox Church.
History of September According to the Roman calendar, it was in fact the seventh month until their calendar was modified by the addition of January and February (around 153 BC), after that it then became the ninth month.
In the United States, September is one of the most common birth months (third most popular after August and July, which both have 31 days), as all but one Top 10 most common birthdays are in September, based on the National Center for Health Statistics statistics on births between 1994 and 2014.
The September Equinox usually occurs around September 22 or 23 and marks the start of autumn in the Northern Hemisphere and spring in the Southern Hemisphere. During the equinox, the sun is directly above the equator, resulting in nearly equal day and night lengths in most parts of the world.
September 21 is recognized as the annual International Day of Peace. Observances range from a moment of silence at noon to events such as peace walks, concerts, and volunteering in the community.
Explore September birth month symbols, including flowers, stones, herbs, bird of the month. Plus, September fun facts, weather lore, and ...
September 1 is the only day in September during a common year to start within the second third of the calendar year. It is the least common month for birthdays among US Presidents, with one, William Howard Taft (September 15).