Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 19:17 13 May 2026 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : Another question about ASTRO

Author Message
PhilP

Newbie

Joined: 25/01/2017
Location: United Kingdom
Posts: 40
Posted: 08:19am 13 May 2026
Copy link to clipboard 
Print this post

Good morning. I have been following at a distance Peter's extremely clever astronomy developments. I have been trying to calculate sunrise and sunset times using various algorithms from NASA and TassyJim's previous programmes but none seem to give a sensible result. There was a simple version of the FotS but it isn't there any more.
I am assuming that the maths needed to do the sunrise/sunset calculations are in some form behind the scenes in the ASTRO function. My question is could ASTRO be used to calculate sunrise and sunset times? From my reading of the function I think I would have to do iterative calculations testing date and time at a LOCATION and look for a sun elevation of zero.
Thanks for any feedback
Phil
 
Print this page


To reply to this topic, you need to log in.

The Back Shed's forum code is written, and hosted, in Australia.
© JAQ Software 2026