28
Do you know of any good reference projects to calculate sunrise and sunset times from NTP? (lemmy.world)
submitted 10 months ago by to c/asklemmy@lemmy.world
8 comments fedilink hide all child comments
 

I'm specifically looking for small microcontroller implementations for a simple clock project. I want to use a good temperature compensated real time clock and/or network time protocol-only (no sunrise/sunset APIs), to calculate local solar noon, sun rise, and sunset times. Then I want to make my own local time where midnight/bedtime is simply 9 hours before sunrise on any given day. I am in special life circumstances where I have no real use for daily coordinated time. This is a little psychology experiment more than anything else. I'm super rusty on the math.

you are viewing a single comment's thread
view the rest of the comments
[–] 3 points 10 months ago (1 child)

https://github.com/dmkishi/Dusk2Dawn

  • permalink
  • fedilink
  • source
  • hideshow 1 child comment
    •
  • [–] [S] 2 points 10 months ago

    Thanks! This repo's readme leads to gml.noaa.gov/grad/solcalc/calcdetails.html. This then references Astronomical Algorithms by Jean Meeus. That is available from the above linked archive.org page.

    This is much closer to the real reason I was asking, as this little clock is intended as a primer for understanding object tracking for both astronomical observations and local rocket launches or transits.

  • permalink
  • fedilink
  • source
  • parent