Interesting one??

Question

How many leap years have been till now frm the begining of the universe
This question was in my mind frm many time

tell me the no. of leap years after the formation of earth

Answer 1

a leap year is just a human invention to account for the subtle change between the length of an actual year and our clocks an calanders...

after we figured out over time they weren't in sync so they calculated it out and just added a day....the earth takes 365.25 days to go around. SO if your still asking the question would be how many leap years since the earth was formed.

Answer 2

Using the modern calendar, every year divisible by 4 is a leap year, except when that year is divisible by 100, in which case it is not a leap year unless it is also divisible by 400 and then it is still a leap year.
Since the present calendar stared at 1AD, there have been 2006 years (not counting 2007 as it is not complete). 2006/4=501 years divisible by 4. 20 of those have also been divisible by 100. (100AD, 200AD, 300AD,...2000AD) And of those 20 years that were divisible by 100, 5 were also divisible by 400. (400AD, 800AD, 1200AD, 1600AD, 2000AD) So the number of leap years is 501-20+5=486 leap years since the modern calendar began.
Before that, there were other types of calendars that go back at least as far as 238BC. Some of them used leap years, and others didn't. Even today the modern calender is not used all over the world universally (although it is rapidly becoming so).
Before the earliest calendars, though, there were no leap years. So asking how many since the earth was formed is somewhat speculative. You should instead ask how many since we started them.