Solar elevation angle (for a day) Calculator

Calculates a table of changes in the solar elevation and azimuth angles for a day and draws the chart.

Input negative degree for west longtitude and south latitude.
If your local time is on Daylight Saving time, select 'ON' from DST mode.
Solar elevation angle (for a day)
Longitude
    1. ,
    2. Latitude
Date
    1.  /
    2. ,
    3. (1900~2099)
    1. Time zone
    2. h, 
    3. DST

Solar elevation angle (for a day)
azimuth angle: north=0, east=90, south=180, west=270 degree
    Solar elevation angle (for a day)
    [1-10] /142Disp-Num
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    [1]  2021/03/27 22:39   Male / 60 years old level or over / Self-employed people / Very /
    Purpose of use
    To work out the date [by trial & error] the midday solar elevation exceeds 45degrees when your skin begins to make vitamin D from UVC radiation which doesn't penetrate the atmosphere below that angle. Answer: April 6th in London at latitude 51.5. [April 2nd southern tip of Cornwall, April 15th Carlisle]
    [2]  2021/03/23 00:05   Female / 30 years old level / An engineer / Useful /
    Purpose of use
    Verification of independent solar azimuth angle calculations.
    [3]  2021/03/19 09:53   - / 60 years old level or over / High-school/ University/ Grad student / Very /
    Purpose of use
    To make an auto-support for a smal solar panel
    [4]  2021/03/14 04:19   Female / 60 years old level or over / A retired person / Very /
    Purpose of use
    To plan at which angle and where to site a greenhouse for growing winter vegetables and spring seedlings when I have trees to my south which block the sun in the winter.
    [5]  2021/03/02 14:42   Female / 30 years old level / Others / Very /
    Purpose of use
    Calculating roof overhang necessary to shade windows and prevent solar gain during summer
    Comment/Request
    Thanks for the useful tool
    [6]  2021/02/23 03:48   Male / 50 years old level / A teacher / A researcher / A little /
    Purpose of use
    Illustration for class.
    [7]  2021/02/18 05:39   Male / 40 years old level / An engineer / Very /
    Purpose of use
    find angle for pv system
    [8]  2021/02/03 21:32   Male / 60 years old level or over / An engineer / Very /
    Purpose of use
    Predict sun position shining thru a church window to highlight a specific spot.
    [9]  2021/01/20 06:39   Male / 50 years old level / An engineer / Useful /
    Purpose of use
    Determine sun elevation for possible solar panel installation.
    [10]  2021/01/16 23:40   Male / 60 years old level or over / Others / Very /
    Purpose of use
    Determine the azimuth of the sun at Morehead City, NC on January 28, 1986 when Space Shuttle Challenger exploded for purposes of orienting a monument
    Comment/Request
    Easy usage

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