I am holding a collection of items in my hands.
I throw two of the items away.

I want to divide it into different groups, but I can only see one half of each item in my hands.

I can easily divide the items into the same amount of groups:

as there are day and night.
as there are seasons.
as there are lunar months.
as there are weeks in the year.

If I add up all the values together,
I get the amount of days in a year (minus 1 for the two items I threw away.)

What do I have?

(In reply to re: you have....Good Point by cges)

In a true lunar calendar, each month is from the full moon to full moon (or new moon to new moon) -- just under 4 1/2 weeks. But us westerners with our solar calendar, and seven day weeks round that out to an even 4 weeks, of which there are 13 in the course of the solar year.

Posted by TomM on 2002-12-20 07:10:04