I have an excel workbook that can calculate the time of twilight, based on a few variables (in amber on the second sheet of the workbook). The workbook has a series of calculations, to calculate the time from a custom altitude of the sun.
I want to keep the variables of longitude and latitude, and height above the horizon and time zone the same. However, I want to calculate different twilight times, for different days of the year, with a custom altitude (see amber cells in the second sheet).
The sheet works really well for individual days, for a specific custom altitude. However, I want to create a table, given on the first sheet, which pulls the variables and automatically creates the output into column C. Please see the spreadsheet for instructions of the variables.
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