Date in year · 1972 · The 1970s
On June 30, 1972, the first leap second is added to the UTC time system. The year's #1 song was "The First Time Ever I Saw Your Face" by Roberta Flack. Aaron Lewis, Conchita Martínez, Tracy K. Smith would arrive in the same year.
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Year
1972
1970s
Featured · June 30, 1972
A leap second is a one-second adjustment occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between International Atomic Time (TAI), as measured precisely by atomic clocks, and observed solar time (UT1), which varies due to irregularities and long-term slowdown in the Earth's rotation.
Around 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.
What happened
Intermittent adjustment to UTC
A leap second is a one-second adjustment occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between International Atomic Time (TAI), as measured precisely by atomic clocks, and observed solar time (UT1), which varies due to irregularities and long-term slowdown in the Earth's rotation.
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Elsewhere that year
The class of 1972
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