1916: South Carolina raises the minimum working age from 12 to 14 years of age for those working in factories, mills and mines.

1940: Hattie McDaniel becomes the first African American to win an Academy Award; she was honored for her role as "Mammy" in Gone With The Wind.

1944: Dorothy Vredenburgh becomes the first woman secretary of a national political party (the Democratic National Committee) in the US.

1956: President Dwight D. Eisenhower intends to seek a second term.

1964: President Lyndon B. Johnson reveals that the US had secretly developed the Lockheed A-11 jet fighter.

1968: Robert McNamara resigned as US Secretary of Defense after the Tet disaster (Vietnam).

History of Leap Year

Roman Emperor Julius Caesar made the first attempt to fix the calendar when dates were no longer in sync with the seasons. He first created one extra-long year ­ 445 days ­ and then followed that with a pattern of three 365-day years and one 366-day year, the leap year.

Fifteen centuries later, the calendar was again out-of-sync with the season. In 1582, Pope Gregory XIII decreed that the calendar jump from October 4 to October 15. He established a new rule -- still used today -- to calculate leap year: under the Gregorian calendar, every fourth year is probably a leap year (divisible by four) with this exception: every year that is evenly divisible by 100 must also be evenly divisible by 400.

See About Calculating Leap Years for more info.

Do you have suggestions for additions to this date? If so, please write and say so - let's make this the most informative calendar possible!