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Equinox
Posted: Fri Sep 22, 2017 1:27 pm
by Semtex
Today is equinox
is this value correct?
- Screenshot-2017-9-22 MeteoBasaldella_LI (3).jpg (170.81 KiB) Viewed 8495 times
Re: Equinox
Posted: Fri Sep 22, 2017 1:43 pm
by Jachym
Yes, this is correct, the equinox is at one particular time of the day, I cant remember what the block uses, either midnight or 12:00, and at that time it is already different
Re: Equinox
Posted: Fri Sep 22, 2017 3:52 pm
by Reinhard
Would it be possible to make Equinox realtime, just like the sunplot? Or at least to see from when on the +8 min xx sec we shall count on?
Re: Equinox
Posted: Fri Sep 22, 2017 4:04 pm
by Jachym
The block is based on days, it doesnt show real time info, that would be very complicated to calculate and it is not 100% accurate anyway, all these PHP scripts have several minutes inaccuracy, which is one of the reasons I avoided using exact times. It is due to the fact that the number of equations is huge and there is lot of rounding going on.
Re: Equinox
Posted: Sun Sep 24, 2017 7:00 am
by iatros
Wondering why two days after "equinox" my riset block still shows a day length longer than the night's I found out that "equinox" means the sun's crossing of the equator (actually Sep 22 20:02 UTC) and not the equal length of day and night which will be the case only between Sep 25 and 30 - depending on the latitude of your location!
- Clipboard.jpg (23.29 KiB) Viewed 8446 times
Re: Equinox
Posted: Wed Sep 27, 2017 2:29 pm
by Jachym
iatros wrote: ↑Sun Sep 24, 2017 7:00 am
Wondering why two days after "equinox" my riset block still shows a day length longer than the night's I found out that "equinox" means the sun's crossing of the equator (actually Sep 22 20:02 UTC) and not the equal length of day and night which will be the case only between Sep 25 and 30 - depending on the latitude of your location!
Clipboard.jpg
Yup
