Nope. The only leap years of the 1980s were:
The leap year immediately previous to 1934 would have been 1932.
It did not fit the rules to be a leap year. Leap years are evenly divisible by 4, they are also evenly divisible by 100 but NOT evenly divisible by 400. 1974 is not evenly divisible by 4. 1972 and 1976 were leap years. It is usually only every second even year that is a leap year. So 1970, 1974 and 1978 were not leap years, but 1972, 1976 and 1980 were leap years.
366 days (it was a leap year)
Nope. The only leap years of the '70s were 1972 and 1976.
1898, 1910, 1916 (leap year), 1921, 1927, 1938, 1944 (leap year), 1949, 1955, 1966, 1972 (leap year), 1977, 1983, 1994, 2000 (leap year), 2005, 2011
1898, 1910, 1916 (leap year), 1921, 1927, 1938, 1944 (leap year), 1949, 1955, 1966, 1972 (leap year), 1977, 1983, 1994, 2000 (leap year), 2005, 2011
Yes. 68 is a multiple of 4. Since every hundredth year is a leap year, and a leap year occurs every four years, any year in which the last 2 digits are divisible by 4 is a leap year.
1972 was the only leap year between 1969 and 1975.
No, but 2004 and 2008 were both leap years.
There were. 1972 and 1976 were intercalary years (leap years), as was 1980. Such years are sometimes called bissextile years.
The first leap second was added on June 30, 1972. Leap seconds are added to Coordinated Universal Time (UTC) to account for the slowing of the Earth's rotation.
In a milenium there are none.However, in a millennium, there are approximately31,557,600,000 (32.6 billion) of them. The exact number will depend on the number of leap seconds.Between 1972 and 2012 a leap second has been inserted about every 18 months on average. However, unlike leap days which appear every fourth year (with an adjustment for Century years), leap seconds are not spaced evenly. There were 9 leap seconds in the 8-year period 1972-1979 but none in the 7-year period covering 1999 to 2005 (both inclusive).