every four years
24 years
Leap years occur every four years.
Just do the multiplications. 60 seconds per minute, times 60 minutes per hour, times 24 hours per day, times 365.25 days per year, times 34 years. If you need to be absolutely accurate, you need to specify the years, and whether or not they are leap years. For two of the four possible sequences of leap- and non leap years covering a stretch of 34 years, there are 9 leap years and 25 non leap years. For the other two possible sequences there are 8 leap years and 26 non leap years. You would still need to specify the exact years, because according to the full rules for assigning intercalary days to a year, now and then the usual leap year arrangement is interrupted.
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
4380+ the amount of times a leap year occured in any of the years since you were born.
There are 4 years between every leap year. Correction: There are 4 years between MOST leap years. That's the case 99.25% of the time. For the other 0.75% of the time, there are 8 years between leap years.
Between 1962 and 2011, there were 12 leap years: every four years from 1964 through 2008 inclusive.