From: Marcin Borkowski <mbork@mbork.pl>
To: "Óscar Fuentes" <ofv@wanadoo.es>
Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Re: Wrong times for sunrise/sunset?
Date: Thu, 24 Jan 2019 18:01:23 +0100 [thread overview]
Message-ID: <87a7jq7zx8.fsf@mbork.pl> (raw)
In-Reply-To: <87pnsrv0fj.fsf@telefonica.net>
On 2019-01-20, at 16:00, Óscar Fuentes <ofv@wanadoo.es> wrote:
> One possible reason is refraction. A cursory look at solar.el gives the
> impression that refraction is not considered, but the astronomy website
> you referenced does. This can cause a difference of several minutes.
>
> Another possible reason is not using the same geographical point. 20
> kilometers to the west or east can result in minutes of difference.
>
> However, the difference you observe in sunrise (3 minutes) is quite
> larger than the diference in sunset (1 minute). At this time of year,
> this can mean that your position and the position used by the website
> differ on the N/S axis.
>
> Just guessing.
Thanks, one learns something every day!
Best,
--
Marcin Borkowski
http://mbork.pl
next prev parent reply other threads:[~2019-01-24 17:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-19 15:25 Wrong times for sunrise/sunset? Marcin Borkowski
2019-01-20 5:52 ` ken
2019-01-20 6:10 ` Marcin Borkowski
2019-01-20 7:17 ` Bob Proulx
2019-01-24 17:04 ` Marcin Borkowski
2019-01-20 15:00 ` Óscar Fuentes
2019-01-24 17:01 ` Marcin Borkowski [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-01-19 19:17 Pierpaolo Bernardi
2019-01-20 5:38 ` Marcin Borkowski
2019-01-26 2:02 Van L
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