Scratch

Well, you could the fact that 1 year is actually 365.25 days long....are you trying to do a days till this date thing?  That'd be hard...but might be possible if compile a list of data such as how many days of each month in one list and the corresponding name in another, along with a designated year to be the standard for the calculator...

if you're just trying to tell the user if a year is a leap year or not, that's a lot simpler:
when flag clicked
forever
  ask "Year?" and wait
  if (2000-answer) mod (4) = 0
    say "You typed a leap year!"
  else
    say "You didn't type a leap year."
end

Basically, since the year 2000 was a leap year, if 2000-(the desired year) is evenly divisible by 4, it's a leap year.

jji7skyline wrote:

An explanation of the Gregorian calendar and leap years.

According to this website, a solar year is actually not 365.25 days but a little less than that, so every 100 years, the leap year is NOT a leap year. That last statement defines the difference between the Gregorian calendar which we use and the Julian calendar which didn't not have a leap year every century.

Even with all these complicated changes to the calendar, it is still very slightly off by a few seconds, so we don't not have a leap year (i.e. we have a leap year) every 400 years. This makes it almost exact.

Here is the link to the website. It explains it quite well I think.

http://www.straightdope.com/columns/rea … leap-years

I hope that helps!    It's much more complicated than I previously thought. I had to research this for school