Saturday, June 20, 2020

First day of summer



Technically, it is about now, which is a little after 4pm Sat. 6.20.20.

At this time of the day, the sun is still fairly high in the sky, but the longest day of the year is winding down. According to the source, the sun is nearly at 270 degrees, which places it due west.

In the winter, it never gets to this point in the sky. It sets about 17 degrees south of this position. The highest the sun gets in the sky in the winter is lower than what it is now. In fact, most of the summer day, the sun is higher in the sky than at its highest point in the winter.

At its highest point today, the sun was at 83 degrees high, which is just 7 degrees short of vertical. The latitude here is also about 7 degrees north of the tropics. This is likely not a mere coincidence. Seems like in science class, it was mentioned that the sun goes directly overhead in the tropics. This location is 7 degrees north of the tropics. Consequently, it is 7 degrees short of vertical 90 degrees on its highest point.

This short little essay is probably quite boring, but it has real world applications when building something. If it is placed just right, the sun will work in your favor. Otherwise, you will have to fight it. That costs more energy for air conditioning or cooling. In the winter, the sun can warm up and thus reduce heating costs.

That is makes me interested in it. This is in reference to my off-grid project. Resources will be limited out there, and it behooves me to plan everything so that there will be enough energy to run the place.

That is all.





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