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From:
Stuart Henderson <stu@spacehopper.org>
Subject:
Re: NEW: astro/py-ephem
To:
Mikolaj Kucharski <mikolaj@kucharski.name>, ports@openbsd.org
Date:
Mon, 9 Jun 2025 11:45:15 +0100

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On 2025/06/09 11:44, Stuart Henderson wrote:
> On 2025/06/09 10:37, Stuart Henderson wrote:
> > On 2025/06/09 09:21, Mikolaj Kucharski wrote:
> > > Hi.
> > > 
> > > I needed to get info about sunrise and sunset. I am aware of py3-astral
> > > but wanted to compare both, ephem and astral.
> > 
> > Given the warnings on https://rhodesmill.org/pyephem/, I'm wondering
> > if this is really a good idea to import unless there's some other
> > software intended to be ported that needs it? Skyfield (largely
> > from the same author and more actively developed) generally seems
> > a better idea, for sunrise and sunset calcs see e.g.
> > https://techoverflow.net/2022/06/19/how-to-compute-sunrise-sunset-in-python-using-skyfield/
> > 
> > If it is still worthwhile, here's a slightly tweaked version.
> > 
> 
> If it's of interest, here are a few ports for a cli tool providing a
> simple interface to display rise and set times for sun, moon, planets
> and a former planet, using skyfield as the backend.

oh, and here's sample output for that:

$ kosmorro
Monday, June 9, 2025

Object     Rise time    Culmination time    Set time
--------  -----------  ------------------  ----------
Sun         4:01 AM         12:12 PM        8:24 PM
Moon        7:17 PM         11:00 PM        2:18 AM
Mercury     4:36 AM         1:06 PM         9:36 PM
Venus       2:12 AM         9:09 AM         4:05 PM
Mars        9:36 AM         4:54 PM         12:14 AM
Jupiter     4:47 AM         1:00 PM         9:13 PM
Saturn      1:12 AM         7:09 AM         1:05 PM
Uranus      2:58 AM         10:46 AM        6:35 PM
Neptune     1:09 AM         7:11 AM         1:13 PM
Pluto      11:24 PM         3:29 AM         7:30 AM

Moon phase: Waxing Gibbous
Full Moon on Wednesday, June 11, 2025 at 7:43 AM

Note: All the hours are given in UTC.