Page 1 of 1
Not every 4 years a leap year
Posted: Dec 3rd, 2012, 6:37 pm
by kelvin911
Re: Not every 4 years a leap year
Posted: Dec 3rd, 2012, 10:24 pm
by Glacier
I don't know what school that guy went to, but I distinctly remember learning that 1900 was not a leap year because 19 is not divisible by 4. Something about there not being exactly 365.25 days in a year, so the calender had to take out the odd leap year.
The old Julian was imprecise, so the Gregorian calender came along whereby leap years on centuries that aren't divisible by 400 (or 4 if you ignore the zeros) were subtracted.
Re: Not every 4 years a leap year
Posted: Dec 3rd, 2012, 10:27 pm
by Captain Awesome
If February had 29 days, it would have 3 pay periods in it.
Too bad!
Re: Not every 4 years a leap year
Posted: Dec 3rd, 2012, 11:34 pm
by grammafreddy
Captain Awesome wrote:If February had 29 days, it would have 3 pay periods in it.
Too bad!
That's an odd kind of a thought - the shortest month having three pay periods. Tickles my funny bone somehow. LOL
Re: Not every 4 years a leap year
Posted: Dec 4th, 2012, 3:40 am
by oneh2obabe
Glacier wrote:I don't know what school that guy went to, but I distinctly remember learning that 1900 was not a leap year because 19 is not divisible by 4. Something about there not being exactly 365.25 days in a year, so the calender had to take out the odd leap year.
The old Julian was imprecise, so the Gregorian calender came along whereby leap years on centuries that aren't divisible by 400 (or 4 if you ignore the zeros) were subtracted.
We must have had the same math teach ... funny the things we remember from school. The Gregorian Calendar omits 3 leap days every 400 years, omitting February 29 in the 3 century years (integer multiples of 100) that are not also integer multiples of 400 ... 1600 was a leap year, but 1700, 1800 and 1900 were not. 2000 was a leap year, but 2100, 2200, and 2300 will not be.
