Tags: Year.
1972 (MCMLXXII)was a leap year starting on Saturday (link will display the full calendar) of the Gregorian calendar the 1972nd year of the Common Era (CE) and Anno Domini (AD) designations the 972nd year of the 2nd millennium the 72nd year of the 20th century and the 3rd year of the 1970s decade.Within the context of Coordinated Universal Time (UTC) it was the longest year ever as two leap seconds were added during this 366-day year an event which has not since been repeated.