PsykoKidd questions a 'yes' response to:

>To paraphrase:  The question was, "Over the span of a year do all 
>places on earth recieve on average exactly 12 hours of daylight 
>and 12 hours of night." 

(The phrasing in the Sunday weekend paper was a little different:
"... Does the sun shine equally all over the Earth on an annual
basis?")
 
Interpreting the question as in the paraphrase above:

It would appear that since the year is approximately 365.25 days long,
then the quarter-day's endpoint will occur at varying phases of the day-
night cycle at different places around the world.  Hence, the correct 
answer appears to be 'no.'

Example: At a point on the equator where a year began exactly at
sunrise, it will again be sunrise 365 days later in that year.  However,
the year will not end until after 6 more hours of sunlight.  Since days
are divided equally into 12 daylight hrs and 12 night hrs at the equator,
the location will have had a total of 12 * 365 = 4380 hrs of darkness, 
but will have had 12 * 365 + 6 = 4386 hrs of light for the year.  A spot 
180° away in longitude, but also on the equator, will have had 4386 
hrs of darkness but only 4380 hrs of light for that year.

Bill Maddux

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