September 12 is the 255th day of the year (256th in leap years). There are 110 days remaining.
- 1943 — Allen Leroy Anderson is born.
- 1951 — Gerald Stano is born.
- 1957 — Ferdinand Gamper is born.
- 1960 — Johnny Peterson is born.
- 1967 — Debra Estes is born.
- 1974 — Calvin Jackson is apprehended.
- 1975 — Anatoly Utkin died.
- 1979 — William Dathan Holbert is born.
- 1990 — George Waterfield Russell is apprehended.
- 2012 — Robert Wayne Harris died.