Thirty Days Hath September
- Year Published: 1919
- Language: English
- Country of Origin: United States of America
- Source: John Bartlett, ed., Familiar Quotations, 10th ed. (Boston: Little, Brown, and Company, 1919)
- Flesch–Kincaid Level: 6.5
- Word Count: 26
Traditional, . (1919). Thirty Days Hath September. Counting and Math Rhymes (Lit2Go Edition). Retrieved April 18, 2015, from
Traditional, . "Thirty Days Hath September." Counting and Math Rhymes. Lit2Go Edition. 1919. Web. <>. April 18, 2015.
Traditional, "Thirty Days Hath September," Counting and Math Rhymes, Lit2Go Edition, (1919), accessed April 18, 2015,.
Thirty days hath September,
April, June, and November;
All the rest have thirty-one,
Excepting February alone,
Which has twenty-eight in line,
Till leap-year gives it twenty-nine.