Recurly 'Leap Day' Party

It's a Leap Year, and we're throwing a party. Here's why:
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It takes the earth approximately 365.2422 days to go around the sun. The normal calendar year is only 365 days.

The extra fraction of a day adds up over the time.

After four years we would have 1460.9688 days. Four calendar years adds up to 1460 days (365 x 4).

The .9688 is... [read more]

It's a Leap Year, and we're throwing a party. Here's why:
----------------------------------------------
It takes the earth approximately 365.2422 days to go around the sun. The normal calendar year is only 365 days.

The extra fraction of a day adds up over the time.

After four years we would have 1460.9688 days. Four calendar years adds up to 1460 days (365 x 4).

The .9688 is very close to a full day, so we round up.

Every 4 years we add an extra day in February. Consequently leap years are always divisible by 4.

However, since we have been rounding up, we end up adding back too many days. So in 1582 Pope Gregory made up a new set of rules. The previous Julien calendar was replaced by the Gregorian Calendar which has the following rules:

Every fourth year is a leap year.
e.g., 2008, 2012, 2016 are leap years
Every hundredth year is not a leap year.
e.g., 1900, 2100, 2200, 2300 are not leap years
Every four hundred years has a leap year.
e.g., 2000, 2400, 2800 are leap years

We couldn't help ourselves. The math made us do it.

Come on over to our offices and we'll have good Beer / Music / Food / People.

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