13
There are 50 years between 1961 and 2011. You can work this out by subtracting 1961 from 2011.
Since 1966 was not a leap year, February 1966 contained 28 days.
Depending on the number of leap years in the period (14 or 15), there will be 1893369600 or 1893456000 seconds - plus any leap seconds which may be added.
Depending on what day you start it can vary from 90580-90582 days. We have a leap year every 4 years except on years that are divisible by 100 like the year 1900 for example, but years that are divisible by 400 we have a leap year like the year 2000 for example. So i factored in that and came up with the answer.
Well, isn't that a happy little question? In most years, there are 365 days. However, every four years we add an extra day — that's called a leap year. So when it's a leap year, there are 366 days in total. That's like adding a touch of extra color to our year, making it special. Happy painting!
16 leap years
There have been 25 leap years since 1910.
There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012There have been 15 leap years since 1955:195619601964196819721976198019841988199219962000200420082012
From 1870 to 2011 there have been 34 leap years.
Since September 13, 1961, there have been 13 leap years. They were 1964, 1968, 1972, 1976, 1980, 1984, 1988, 1992, 1996, 2000, 2004, 2008 and 2012. The next leap year will be 2016.
As of 2011, the leap years since 1986 have been: 1988 1992 1996 2000 2004 2008 This is a total of six leap years.
12
1
23
4
20 leap years.
130 years