Gauge for Length of Day (showing Solstices & Equinoxes)


#103

Happy Winter Solstice everyone!

Thanks to TWC’s seconds, my dials were more accurate this year than ever before…

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When I examine the code, today’s day length was actually 6 seconds off from my actual location. I cannot blame my math… I cannot blame webCoRE… It is simply TWC reports the sunrise and sunset for a station a few miles away.


If anyone else wants to calibrate THEIR piston, I recommend running these two expressions today… right now… before midnight hits

$twcweather.conditions.sunriseTimeLocal
$twcweather.conditions.sunsetTimeLocal

Save the results to a text file, then later on, when you are bored, you can do the math to find the shortest day that TWC sees for your location.


#104

Wow… Sometimes I am really impressed with my math…

Earlier this year, I estimated that using TWC for sunrise & sunset times will bring the results within 0.007% of accuracy…

The results for this year are in…

This Winter Solstice returned 0.042%… (instead of 0%)
(Which is exactly 6 seconds off, due to my location)
and of course…
0.007 x 6 = 0.042

The math could not be any more perfect!!
(not that anyone else cares, LOL)


#105

First full day of Winter, and the new colors switched over on schedule…

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The next six months, the dial will be moving towards the right…