To: WSFAlist at keithlynch.net
Date: Wed, 20 Nov 2002 04:35:15 -0500
Subject: [WSFA] Re: 1/3 century
From: ronkean at juno.com
Reply-To: WSFA members <WSFAlist at keithlynch.net>

On Wed, 20 Nov 2002 00:57:42 -0500 (EST) "Keith F. Lynch"
<kfl at KeithLynch.net> writes:
> Today (November 20th) marks exactly one third of a century since the
> first manned moon landing.
> --

If one counts time by Gregorian calendar months, taking the interval from
July 20, 1969 to August 20, 1969 to be one month, and to the 20th of
September 1969 to be two months, etc., then indeed it has been exactly
400 months since the July 20, 1969 moon landing.  And 400 is exactly one
third of 1200, and 1200 would be the number of months in a century using
that counting procedure.  But, if one were to count by days, rather than
by months, 11/20/2002 might not be _exactly_ one third of a century since
7/20/1969 (but it would be mighty close).  Also, some centuries have
36,525 days, and some have only 36,524 days, and the average duration of
a century, in days, is somewhere in between those two numbers of days.
At least 36,525 is evenly divisible by three.

Ron Kean

.

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