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tomorrowdaylength tag

Discussion and questions about Cumulus weather station software version 1. This section is the main place to get help with Cumulus 1 software developed by Steve Loft that ceased development in November 2014.
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daj
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tomorrowdaylength tag

Post by daj »

I'm wondering about the <#tomorrowdaylength> tag
Tomorrow will be 4min 40s longer than today
There are always 24 hours in a day, surely (give or take a millisecond a year) ;)

Would it be better to say something like...
There will be 4 mins 40s more daylight tomorrow
Or am I missing what it is trying to tell me?
David
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Re: tomorrowdaylength tag

Post by Hillbilly »

No, you're absolutely right!
Many thanks
Helen

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Re: tomorrowdaylength tag

Post by steve »

Fair point. But people do tend to say "the days are getting longer". But your suggested version is much clearer than the existing one; I'll change it.
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Re: tomorrowdaylength tag

Post by silverview »

David, strangely enough, not five minutes ago a friend was commenting on my weather website and made that very remark.

Actually, is that tag measuring the change in the length daylight, or the amount of time between sunrise and sunset? Both are expressed in the almanac.
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Re: tomorrowdaylength tag

Post by Kjeldstroem »

Hello All
My first reply in the forum, after nearly a year as member.
Why not only let the <#tomorrowdaylength> tag be xxmin yys,
then I can write, in my words, what it means ( in Danish ).
Hilsen Kurt
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Re: tomorrowdaylength tag

Post by Hillbilly »

The French weather bulletins show a panel at the end which gives the name of the saints day for tomorrow, sunrise, sunset and how many minutes longer tomorrow will be than today! So they use that wording, but it stood out last night.
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Helen

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Re: tomorrowdaylength tag

Post by steve »

Kjeldstroem wrote:Hello All
My first reply in the forum, after nearly a year as member.
Why not only let the <#tomorrowdaylength> tag be xxmin yys,
then I can write, in my words, what it means ( in Danish ).
Hilsen Kurt
Yes indeed, it should really have been like that in the first place. As with many things, I have no idea why I did it this way :). There should be two extra tags, I think, one with just the minutes and the other with just the seconds.

Except that the whole thing is broken anyway and I should probably just remove it ;)
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Re: tomorrowdaylength tag

Post by bnwrx »

steve wrote:
Kjeldstroem wrote:Hello All
My first reply in the forum, after nearly a year as member.
Why not only let the <#tomorrowdaylength> tag be xxmin yys,
then I can write, in my words, what it means ( in Danish ).
Hilsen Kurt
Yes indeed, it should really have been like that in the first place. As with many things, I have no idea why I did it this way :). There should be two extra tags, I think, one with just the minutes and the other with just the seconds.

Except that the whole thing is broken anyway and I should probably just remove it ;)
Steve, please don't remove this webtag. I really prefer having this information no matter how it comes across. I think most people can decipher that it means daylight length is changing. Consider rephrasing perhaps but not removal.
Thanks ;)
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Re: tomorrowdaylength tag

Post by steve »

bnwrx wrote:Steve, please don't remove this webtag. I really prefer having this information no matter how it comes across. I think most people can decipher that it means daylight length is changing. Consider rephrasing perhaps but not removal.
Thanks ;)
It's not so much the phrasing, it's the fact that it's actually wrong!
Steve
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Re: tomorrowdaylength tag

Post by daj »

steve wrote:It's not so much the phrasing, it's the fact that it's actually wrong!
:o I just added it to my web page too! I will take it off for now. LOL
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Re: tomorrowdaylength tag

Post by steve »

daj wrote: :o I just added it to my web page too! I will take it off for now. LOL
Ah, sorry; I thought everyone knew it was deficient, as we discovered at the solstice.
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Re: tomorrowdaylength tag

Post by bnwrx »

I guess I don't understand.... Whats wrong with it? :?:
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Re: tomorrowdaylength tag

Post by Hillbilly »

I like this feature and didn't know it was wrong as I wasn't using the system at solstice. How wrong is it?!
Many thanks
Helen

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Re: tomorrowdaylength tag

Post by bnwrx »

The data Cumulus supplied for the webtag matches the data WeatherUnderground posted on their page. At least for my location.
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Re: tomorrowdaylength tag

Post by steve »

The problem as I understand it is that the library routines I use for calculating length of daylight etc are apparently accurate to the nearest minute, which is fine for most uses, but when you start subtracting today's from tomorrow's and displaying it to the nearest second, it's meaningless. At the Winter solstice, Cumulus was still saying that the following day would be shorter by a few seconds.

But it's interesting that Wunderground says that tomorrow for me is 5m 8s longer and Cumulus says 5m 7s longer, so maybe I don't understand the problem after all.

Also of interest, perhaps, is that Wunderground also uses the "Tomorrow will be x longer" phrase.
Steve
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