This year is a leap year, which supposedly occurs every 4 years—and today, 29 February is a leap day.

But that's not necessarily true, although a common belief.

Under the Gregorian calendar, a leap year must be able to be divided by 4 and by 100. But it also must

be able to be divided by 400 with no remainder. So, for example, the year 2000 was a leap year, as it can

be divided into 500, 20 and 5. But 1900 was not. Although it can be divided by 4 and 100 (475 and 19) it

can't be evenly divided by 400.

And neither will 2100 be a leap year. Or 2200 or 2300.

Why? Instead of having 100 leap years every 400 years the Gregorian calendar has 97, which refines the

number of days in a year down to 365.2425 (when compared to the earlier Julian calendar of 365.25 days).

—Confused?

But that's not necessarily true, although a common belief.

Under the Gregorian calendar, a leap year must be able to be divided by 4 and by 100. But it also must

be able to be divided by 400 with no remainder. So, for example, the year 2000 was a leap year, as it can

be divided into 500, 20 and 5. But 1900 was not. Although it can be divided by 4 and 100 (475 and 19) it

can't be evenly divided by 400.

And neither will 2100 be a leap year. Or 2200 or 2300.

Why? Instead of having 100 leap years every 400 years the Gregorian calendar has 97, which refines the

number of days in a year down to 365.2425 (when compared to the earlier Julian calendar of 365.25 days).

—Confused?

I'm a creationist; I believe that man created God.