Why is the ninth month called September?
early 15c., from Latin salubritas, from salubris "promoting health, healthful" (see salubrious).
1540s, from Latin salubris "promoting health, healthful," from salus (genitive salutis) "welfare, health" (see salute (v.)). Related: Salubriously; salubriousness.
salubrious sa·lu·bri·ous (sə-lōō'brē-əs)adj. Conducive or favorable to health or well-being.