[Remind-Fans] sunrise() and sunset() are 1 hour behind
Dougie Lawson
dl1ims at gmail.com
Fri Jul 29 05:16:13 EDT 2016
Using the cookbook receipe for sunrise, sunset and full moon. I get
sunrise at 04:25, sunset at 19:56, next full moon at 09:29 on 2016/08/18
that's running on a system that has the local clock set to GMT/UTC all year
round.
So we need to know whether remind is using dawn (0°), civil (6°), nautical
(12°) or astronomical (18°) twilight as the sun's angle for its
calculations.
The online charts at http://aa.usno.navy.mil/data/docs/RS_OneYear.php for
my LAT/LONG (UK: N51° 14', W001° 08') match the remind values. The values
from Remind also match the BBC Weather app that runs on my Android tablet.
Have a look at http://www.risacher.org/sunwait/ it's another way to get the
sunrise/sunset times. I write the output of that to a file in /var/run
twice a day. Unfortunately today's sunrise times got wiped out as my whole
collection of Raspberry Pis got a reboot today.
Regards, Dougie
On 28 July 2016 at 21:08, Larry Hynes <larry at larryhynes.com> wrote:
> Dianne Skoll wrote:
> > On Thu, 28 Jul 2016 20:03:25 +0100
> > Conor Matthew <conormatthew at openmailbox.org> wrote:
> >
> > > However sunrise() and sunset() are 1 hour behind.
> >
> > I get the correct results. Anyone else in the UK able to
> > try this? Are your sunrise/sunset results off by an hour?
>
> I'm in Ireland, currently in Daylight Savings Time (Irish Summer Time,
> similar to British Summer Time in the UK) and sunrise / sunset are OK
> for me.
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--
http://twitter.com/DougieLawson
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