20 including today (in my time zone)
20
20 leap years.
23
From 1933 to 2012, there have been 19 leap years. 1932 was a leap year but the next one wasn't until 1936.
As of 2017, there have been 16 leap days since the 10th of February, 1955.
28 days since it is not leap year. You have to be able to divide exactly by 4 to be leap year.
366. 1940 is a leap year, since it is divisible by 4.366. 1940 is a leap year, since it is divisible by 4.366. 1940 is a leap year, since it is divisible by 4.366. 1940 is a leap year, since it is divisible by 4.
182.5 or 183 in a leap year
Since 1966 was not a leap year, February 1966 contained 28 days.
Since 1988 is a leap year (divisible by 4), February has 29 days.
20 including today (in my time zone)
Including 2012 itself, there have been 20 leap days from 1933 to 2012. They were in the years: 1936 1940 1944 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988 1992 1996 2000 2004 2008 2012