A leap year is a year containing one additional day added to keep the calendar
year ... By this rule, the average number of days per year is 365 + <sup>1</sup>⁄4 − <sup>...
There is a leap year every year whose number is perfectly divisible by four -
except for years which are both divisible by 100 and not divisible by 400.
This new rule, whereby a century year is a leap year only if divisible by 400, is the
sole feature that distinguishes the Gregorian calendar from the Julian calendar ...
Feb 28, 2011 ... The following rule, devised recently by British maths brainiac Adam P Goucher, is
much cleverer: years divisible by 128 are not a leap year, ...
Find out the next Leap Day, how to calculate Leap Years, Leap Year folklore, and
more on ... Here are the rules for leap year, just to set the record straight.
Q: Is the year 2000 a leap year? A: Yes, because the rule is: in the Gregorian
calendar, leap years occur in years exactly divisible by four, except that years ...
Putting all of these rules together, you can see that a year is a leap year not only
if it is divisible by 4 -- it also has to be divisible by 400 if it is a centurial year.
Mar 1, 2016 ... Leap Year 2016: Why does February have 29 days every four years? .... The
added rule about centuries (versus just every four years) was an ...
Any year that is evenly divisible by 4 is a leap year: for example, 1988, 1992, and
... only the year 1900 is subject to the 100/400 exclusion rule of leap years in ...
A leap year is a year in which an extra day is added to the calendar in order to ...
The extra rule involving centuries is an additional correction to make up for the ...