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] /181Disp-Num
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    [1]  2022/09/11 14:26   60 years old level or over / A retired person / Very /
    Purpose of use
    To know how fast/slow building shadows lengthen so my morning walks are cooler. This may seem trivial compared with other users but I would really struggle with the trig calculations and I feel we ought to be able to know things like this. Thanks for making that possible.
    [2]  2022/09/02 22:51   60 years old level or over / A teacher / A researcher / Very /
    Purpose of use
    Solar Operated Pump Station
    [3]  2022/08/23 04:19   20 years old level / An engineer / Useful /
    Purpose of use
    To find solar elevation angle right now to estimate solar load.
    Comment/Request
    Clarify time zone
    [4]  2022/07/13 04:44   60 years old level or over / A retired person / Very /
    Purpose of use
    to be able to calculate the optimum adjustable solar panel tilt angle.
    Comment/Request
    Is it possible to permanently change the lat and long to my location, without having to input each time I logon?
    from Keisan
    How to store and read the input data.
    [5]  2022/07/11 01:54   60 years old level or over / A retired person / Useful /
    Purpose of use
    Want to know how much the sun will interfere with viewing today's rocket launch from Vandenberg.
    [6]  2022/06/30 18:08   50 years old level / Self-employed people / Very /
    Purpose of use
    Solar Installation
    [7]  2022/06/17 04:58   50 years old level / Self-employed people / Very /
    Purpose of use
    Enjoying the mathematical geography. Planning trips and activities.
    [8]  2022/05/20 01:23   40 years old level / Others / Very /
    Purpose of use
    Aerial Photography Mission Planning
    Comment/Request
    I do aerial photography for environmental surveying, engineering and photogrammetry purposes. I regularly use this tool to determine when I can acquire imagery on the coast without getting sun angle reflection off of the water.
    [9]  2022/04/20 13:39   20 years old level / High-school/ University/ Grad student / Useful /
    Purpose of use
    working on two axis sun tracking solar panel
    [10]  2022/04/19 06:43   30 years old level / An office worker / A public employee / Very /
    Purpose of use
    My company takes vertical imagery from fixed wing aircraft for use in mapping and engineering. Specifications of imagery products often hinge on certain sun angle windows.
    Comment/Request
    I use your 'Solar elevation angle (for a day) Calculator on a daily basis. I would also like to be able to look up a specific sun angle window and see a table that calculates all the dates where that range is possible at a certain location.

    For example, I'd like to be able to look up the city of Seattle, Washington, and specify a sun angle range of 30 degrees to 45 degrees. I would like to see a chart that shows me the dates and times that range occurs for a calendar year.

    Thank you for your website! I use it often!!

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