Lueke,
That is really cool stuff. And it runs fastl
Here's another idea if you're interested. I tried to do this a few years
ago just using a spreadsheet to do the plots; I think I got it working
eventually, but the display left a lot to be desired.
Having lived at different latitudes, I was always intrigued by the rate of
change in the length of the day. It always changes fastest at the equinox,
but the change is much more abrupt at higher latitudes so that in Helsinki,
for example, winter turns abruptly to summer with its long days, lingering
twighlight and (almost) midnight sun. In Kinshasa, the length of the day
is virtually constant and there is almost no twilight.
The idea is to plot the daylight hours (hours against date) as a function
of latitude: Chose the latitude and show the daylight length over a year.
At the equator it will be flat. Moving north, it would become a sine
curve until the arctic circle where the top and bottom of the curve would
be truncated by the 24 hour limit of the day and it would look like four
almost-vertical lines.
At 05:08 PM 6/24/99 -0800, Luke Coletti wrote:
If you are interested in site specific solar data try using my Solar
>Calculator, URL below.......
>http://www.gcstudio.com/suncalc.html
>
>http://www.gcstudio.com/cgi-bin/sunmap
>
>Enjoy,
>
>Luke
>
>
>John Carmichael wrote:
>>
>> Hello dialists:
>>
>> The Arizona Daily Star did a little story today on a great website which
>> will give you the exact time of sunrise and sunset for 130,406 U.S.
>> locations for any date! David Shaw's easy-to-use site also indicates the
>> exact latitude and longitude of these locations. It is fun to see by how
>> much the moment of sunrise and sunset changes even at different locations
>> within the same city.
>>
>> check it out: http://www.jabberwocky.com/photo/suntimes.html
>>
>> John Carmichael
>> http://www.azstarnet.com/~pappas
