given the day of the year, if its am or pm, sun angle, and your latitude, this project can give you the time (solar time) this formula can be solved by hand and a mechanical calculator. using a mechanical calculator I was 48 minutes off from actual time, using a digital calculator I was 12 minutes off
this project is set to my latitude at my house adjust if needed, this project does not track actual time but it does track the day of the year 3d print this https://www.thingiverse.com/thing:5444034 for the sun angle, if you don't have a 3d printer, use a protractor with a string attracted to it.
