What is the angle of the Sun on June 21 & Dec 21 at US Zip Code 37129?

In summary, using the Reed's Astro Navigation Tables and the latitude of 39 deg 54 min North, the Sun's altitude at zip code 37129 on June 21 is approximately 74 degrees 32 minutes, on December 21 is approximately 26 degrees 40 minutes, and on February 20 is approximately 39 degrees 15 minutes. This information can be used to determine the best angle for a solar project during the coldest part of winter.
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gary350
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TL;DR Summary
What is angle of sun June 21 & Dec 21 at 37129
What is angle of Sun June 21 & Dec 21 at zip code 37129. I need lowest angle & highest angle and probably angle of sun about Feb 20.

Google word search shows nothing. I am probably need using correct word search to find what I want. Several years ago I accidently found a calendar that showed angle of sun buy date & zip code. I have no clue what word search is needed to find what I need.

I think our sun at 37129 is about 34° Dec 21 and about 88° June 21. I also need Feb 20.

I am setting up a solar project for the best angle for coldest part of winter.
 
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gary350 said:
TL;DR Summary: What is angle of sun June 21 & Dec 21 at 37129

What is angle of Sun June 21 & Dec 21 at zip code 37129. I need lowest angle & highest angle and probably angle of sun about Feb 20.

Google word search shows nothing. I am probably need using correct word search to find what I want. Several years ago I accidently found a calendar that showed angle of sun buy date & zip code. I have no clue what word search is needed to find what I need.

I think our sun at 37129 is about 34° Dec 21 and about 88° June 21. I also need Feb 20.

I am setting up a solar project for the best angle for coldest part of winter.
I have referred to Reed's Astro Navigation Tables for a random year.
On 21 June the Sun's Declination is about 23 deg 26 min North of the equator. On 21 Dec it is 23 deg 26 min South of the equator. On 20 Feb it is 10 deg 51 min South of the equator. You are in latitude 39 deg 54 min North according to this web site: https://www.freemaptools.com/convert-us-zip-code-to-lat-lng.htm
To find the Sun's altitude, we use some simple geometry, see this web site:
https://sciencing.com/calculate-suns-altitude-8556649.html
At 21 June, Sun's Altitude is 90 - Latitude + Sun's Dec
Sun's Alt = (89d 60m) - (39d 54m) + ( 23d 26m) = 74d 32m
At 21 December, Sun's Altitude is 90 - Latitude - Sun's Dec
Sun's Alt = (89d 60m) - (39d 54m) - ( 23d 26m) = 26d 40m
At 10 Feb, Sun's Altitude is 90 - Latitude + sun's Dec
Sun's Alt = (89d 60m - (39d 54m) - (10d 51m) = 39d 15m
 
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1. What is the angle of the Sun on June 21 at US Zip Code 37129?

The angle of the Sun on June 21 at US Zip Code 37129 varies depending on the time of day. At solar noon, the angle will be at its highest point, known as the solar altitude, which can range from 60-90 degrees depending on the latitude of the location. However, if you are looking for the angle of the Sun at a specific time, you can use a solar calculator or online tool to determine the exact angle.

2. What is the angle of the Sun on Dec 21 at US Zip Code 37129?

Similar to June 21, the angle of the Sun on Dec 21 at US Zip Code 37129 also varies based on the time of day. However, due to the tilt of the Earth's axis, the angle will be lower on this day compared to June 21. Again, the best way to determine the angle at a specific time is to use a solar calculator or online tool.

3. How does the angle of the Sun on June 21 compare to Dec 21 at US Zip Code 37129?

The angle of the Sun on June 21 will be higher than on Dec 21 at US Zip Code 37129. This is because June 21 is the summer solstice, when the Earth's axis is tilted towards the Sun, resulting in longer days and higher solar altitudes. On the other hand, Dec 21 is the winter solstice, when the Earth's axis is tilted away from the Sun, resulting in shorter days and lower solar altitudes.

4. Does the angle of the Sun on June 21 and Dec 21 change every year at US Zip Code 37129?

Yes, the angle of the Sun on June 21 and Dec 21 can vary slightly each year at US Zip Code 37129. This is due to the Earth's orbit around the Sun, which can cause minor changes in the position of the Sun in the sky. However, these changes are usually very small and may not be noticeable to the naked eye.

5. How does the angle of the Sun on June 21 and Dec 21 at US Zip Code 37129 affect the length of daylight?

The angle of the Sun on June 21 and Dec 21 at US Zip Code 37129 directly affects the length of daylight. On June 21, the higher angle results in longer days, while on Dec 21, the lower angle results in shorter days. This is due to the amount of direct sunlight that reaches the Earth's surface at different angles, which in turn affects the amount of daylight hours.

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