Definition of the word September

The word "September" originates from the Latin word "septem," meaning "seven." This is because September was the seventh month of the Roman calendar, which was originally based on a 10-month year. The Roman calendar was created around 753 BC and was based on a 355-day solar year, with March (Martius) being the first month and December being the last. As the Roman Empire expanded, the need arose to add more months to the calendar. In 45 BC, Julius Caesar reformed the calendar, adding January and February as the first two months, and making September the ninth month. Despite this change, the name "September" remained, reflecting its origins as the seventh month of the original Roman calendar.