There were 15 leap years in that period:
Here they are:
There are only leap years on Earth, so there is no such thing as a leap year on Jupiter.
As of and including 2012, there have been twelve leap years since 1966. Simply taking the number of elapsed years and dividing by four will only get you the correct answer part of the time, since it mathematically assumes the year before you start counting is a leap year.
if no leap years: 52.56 minutes if all leap years: 52.704 minutes if standard century: 52.59492 minutes
Look for a perpetual calendar on the Net, that should help. You would think there would be 25 but I am not sure they didn't skip a leap year in the year 2000 (which was the final year of the 20th century, not the first of the current one).
150 years
There were 24 leap years in that period:185218561860186418681872187618801884188818921896190419081912191619201924192819321936194019441948
3 years, as 2012 was the next leap year after 2009.
Disregarding the leap years, 17598840 hours Regarding leap years, about 17610888 hours
There were two leap years from 1999 to 2009: 2000 and 2004. Leap years occur every four years to account for the extra 0.25 days in a solar year.
Just three:200020042008
1949 was not a leap year, so there were 28 days in February 1949.
16 leap years
24 leap years
Leap years occur every 4 years.
without leap years 60153 With leap years 60174
7 leap years!
1 if it is a leap year