Solar astro azimuth

I know it’s been asked about before, but…

Is there a proper astro azimuth reduction program out there?

For no good reason I do a lot of solar azimuths. And I reduce my observations in a spreadsheet, using MICA ephemeris, that I wrote a few years ago. But I’d like to compare my output to a current published program.

I do have a working copy of Elgin & Knowles Astro83, dated 1996, which is clunky and 27 yrs old. My output differs from E&K by only 4”, but it’s god awful to use as it’s a classic DOS exe.

Just wondering if there is a survey grade current program, or is solar observation that far removed from land surveying.