Back 1972 Abkhazian 1972 Afrikaans 1972 ALS 1972 እ.ኤ.አ. Amharic 1972 AN 1972 Arabic 1972 ARY 1972 ARZ 1972 AST 1972 сон AV
 | This article needs additional citations for verification. (July 2017) |
| Millennium: | 2nd millennium |
|---|---|
| Centuries: | |
| Decades: | |
| Years: |
| 1972 by topic |
|---|
| Subject |
| By country |
|
| Lists of leaders |
| Birth and death categories |
| Establishments and disestablishments categories |
| Works category |
Wikimedia Commons has media related to 1972.
1972 (MCMLXXII) was a leap year starting on Saturday 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. (If its start and end are defined using mean solar time [the legal time scale], its duration was 31622401.141 seconds of Terrestrial Time (or Ephemeris Time), which is slightly shorter than 1908).[1]
- ^ Stephenson, F. R.; Morrison, L. V. (1984). "Long-Term Changes in the Rotation of the Earth: 700 B. C. to A. D. 1980". Philosophical Transactions of the Royal Society A. 313 (1524). Royal Society: 47–70. Bibcode:1984RSPTA.313...47S. doi:10.1098/rsta.1984.0082. S2CID 120566848.