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What number of the year is September?

Published in Calendar Months 2 mins read

September is the ninth month of the year in the Gregorian calendar.

September's Position in the Calendar Year

In the standard Gregorian calendar, September holds its place as the ninth month. It is consistently positioned between August and October. This month is known for having 30 days.

  • Order: Ninth month
  • Preceded by: August
  • Followed by: October
  • Duration: 30 days

Historical Origin of September's Name

The name "September" derives from the Latin word "sept," which means "seven." This numerical origin is a remnant of an older Roman calendar system. Initially, September was indeed the seventh month of the year. The shift occurred with the addition of January and February to the beginning of the year, pushing September to its current ninth position. Despite this change, its name continues to reflect its historical sequence.

Overview of Months and Their Numerical Order

Understanding September's place is clearer when viewed within the context of the entire year. The table below illustrates the numerical order of the months in the Gregorian calendar:

Month Number of the Year Days in Month (common)
January 1 31
February 2 28 or 29 (leap year)
March 3 31
April 4 30
May 5 31
June 6 30
July 7 31
August 8 31
September 9 30
October 10 31
November 11 30
December 12 31

This sequential numbering is a fundamental aspect of the widely adopted Gregorian calendar system, which organizes our days into weeks, months, and years.