1950 (MCML) was a common year starting on Sunday (dominical letter A) of the Gregorian calendar, the 1950th year of the Common Era (CE) and Anno Domini (AD) designations, the 950th year of the 2nd millennium, the 50th year of the 20th century, and the 1st year of the 1950s decade. It is also the index year, or year 0, that scientists use for Before Present figures.