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] /95Disp-Num
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    [1]  2019/03/19 15:59   Male / 60 years old level or over / Self-employed people / Very /
    Purpose of use
    Calculate correct position of solar panel. Excellent chart, thank you!
    Comment/Request
    I suggest you add explanation of "time zone" since it does not adjust automatically based on longitude. For example USA Eastern time zone normal designation is "GMT-5:00" but you want me to enter "19" ... How is the user supposed to know this?
    [2]  2019/03/16 02:34   Male / 60 years old level or over / A retired person / Useful /
    Purpose of use
    Solving geometry problem
    [3]  2019/03/07 07:32   Male / 60 years old level or over / A retired person / Very /
    Purpose of use
    Correlating sun elevation with PV production figures related to panel orientations.
    [4]  2019/03/04 18:24   Male / 60 years old level or over / A retired person / Useful /
    Purpose of use
    To understand weather Change
    [5]  2018/11/07 07:21   Male / 60 years old level or over / High-school/ University/ Grad student / Very /
    Purpose of use
    Looking for hours of sunlight available to a tree given the sunrise, sunset and angle.
    I have found charts for the first two and the last one but not together.
    Is this possible?
    [6]  2018/08/22 14:51   Male / 20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    Personal
    Comment/Request
    Need to know the formula you used for elevation and azimuth angle.
    [7]  2018/07/26 02:03   Male / 60 years old level or over / High-school/ University/ Grad student / Very /
    Purpose of use
    personal
    [8]  2018/06/11 23:11   Male / 30 years old level / A teacher / A researcher / - /
    Purpose of use
    research
    Comment/Request
    I would like to ask whether the algorithm of this calculator has been published so it could be properly cited in a research paper. I would be grateful for the citation. Thank you.
    [9]  2018/05/06 21:59   Male / 60 years old level or over / A retired people / Very /
    Purpose of use
    to calculate the sun elevation angle prior installation of PV panels
    [10]  2018/05/05 21:08   Male / 50 years old level / Others / Very /
    Purpose of use
    Determine safe times for sun exposure using the rule of thumb that 45 degrees of elevation and above as unsafe.
    Comment/Request
    Even though I used the map search to find my location, the time zone was incorrectly shown as 9 hours (when it should have been 0 hours for GMT.)

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