Hi Mac (or anybody else):
For several years I have been looking for a website that gives maps showing
the amount of average annual sunshine. Could you please tell us the URL of
the website you used?
Thanks,
John
----- Original Message -----
From: "Frank King" <[EMAIL PROTECTED]>
To: "Mac Oglesby" <[EMAIL PROTECTED]>
Cc: "Sundial List" <sundial@uni-koeln.de>
Sent: Friday, May 05, 2006 11:59 PM
Subject: Re: Buyer's Guide
Dear Mac,
I would have wagered a small amount that I had seen
a map showing average annual sunshine in Vermont to
be less than 30% of possible sunshine. However, I
just found a NOAA map which appears to show mean
annual sunshine here as 51 - 55 percent.
That's pretty good by U.K. standards!
... my point remains that, since a sundial functions
as a sundial only part of the time, it really ought
to be a pleasant thing to look at when it's not working.
Yes, agreed 100%.
Do you have an estimate for the percentage of working
hours during a year for a sundial at your location?
That's an embarrassing question and I have had to look
up the answer. It seems that in Cambridge, England, we
average about 1700 hours of sunshine a year.
If you take the year as being 8766 hours this means we
get sun about 19% of the year. This is about 40% of
daylight hours.
As this list has been reminded in recent weeks, even
when the sun is shining there are many reasons why a
sundial might still be in shadow. The sun might be
on the `wrong' side of the dial or blocked by trees,
buildings, hills or other items of horizon pollution.
I see, from Wikipedia that the maximum sunshine ever
recorded in the U.K. in a single month was 383.9 hours
at Eastbourne (East Sussex) in July 1911. That is
almost 52% of the total hours in the month.
You are right. We had better make our sundials good
to look at even when they are in the shade!
Best wishes
Frank
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