Thanks Bob for this link. This date may be true for NYC but the date varies
with latitude. It is 7 Dec for NYC at 40.7° but 28/29 Nov for Miami at 25.7°
and 10 Dec where I live in Sidney by the Sea BC at 48.6°. Some time ago I
developed a spreadsheet to calculate sunrise and sunset times. Input the
location, Lat and Long, and the starting date and the spreadsheet calculates
the equation of time, declination rise and set times for a two month period.
The results for my location are plotted in the chart attached, a 25 kb file.
The spreadsheet is too big at 87 kb to attach but I would be happen to send it
to anyone for their use.
Helmut Sonderegger programmed the equation of time and declination algorithms
in a spreadsheet that I imported into this spreadsheet for these calculations.
It works well to show what happens around the solstice.
Regards,
Roger Bailey
Walking Shadow Designs
From: Robert Terwilliger
Sent: Wednesday, December 07, 2016 6:34 AM
To: sundial@uni-koeln.de
Subject: New York Times - Today will be the earliest sunset of the year.
http://www.twigsdigs.com/annex/sunset.html
Bob
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Solstice Rise Set.doc
Description: MS-Word document
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