Okay, that’s good to hear. …& thanks clearing it up.
On Sun, Oct 16, 2022 at 3:54 PM Steve Lelievre <
steve.lelievre.can...@gmail.com> wrote:
> Michael,
>
> On 2022-10-16 1:40 p.m., Michael Ossipoff wrote:
> > Thank you for mentioning that I answered Steve's question.
> > ...something not
Michael,
On 2022-10-16 1:40 p.m., Michael Ossipoff wrote:
Thank you for mentioning that I answered Steve's question.
...something not acknowledged by Steve for some reason.
Please be assured that no slight was intended. Thank you for taking the
time to reply to my question.
I did not
Frank--
Thank you for mentioning that I answered Steve's question. ...something
not acknowledged by Steve for some reason.
I didn't notice that when I first read your post. Thanks for setting the
record straight !
So, to the list I just want to clarify that, when Steve asked how to
determine
[quote]
At the moment we are in Vintagarious, the
first month, and you will see that each
day has the symbol for Aries.
[/quote]
Then you have an error, because Vendemiaire doesn't roughly approximate
Aries. Vendemiaire
roughly approximates Libra.
As for the nature of the French Republican
Dear Steve,
Michael, Werner and Fabio have provided some
excellent responses to your question.
If you are ONLY interested in relating three
ANGLES - solar longitude, solar declination
and the obliquity - then this relationship is
indeed all you need:
sin(lambda).sin(obliquity) = sin
My thanks go Werner for his detailed and helpful response to my
question, and Fabio for his interesting comments on the astrolabe.
I learned some new things today, and it was nice to see a diagram of the
offset circles on the back of the astrolabe. Clever.
Cheers,
Steve
Dear Steven,
The relation of solar declination delta(t) to ecliptic longitude lambda(t)
delta(t) = ArcSin[Sin[23.44]*Sin[lambda[t]]
You are interested in the relation of solar declination to time since the
equinox.
Your formula delta(t) = 23.44*Sin(t), with t being the time (in degrees
erably also for some fractions of each
> ecliptic-month, such as 1/3 & 2/3.
>
> On Fri, Oct 14, 2022 at 10:16 PM Michael Ossipoff
> wrote:
>
>>
>>
>> -- Forwarded message -
>> From: Michael Ossipoff
>> Date: Fri, Oct 14, 2022 at 10:16 PM
Ossipoff
wrote:
>
>
> -- Forwarded message -
> From: Michael Ossipoff
> Date: Fri, Oct 14, 2022 at 10:16 PM
> Subject: Re: How to turn ecliptic longitude into solar declination?
> To: Steve Lelievre
>
>
>
>
> Or you could just use the ecliptic lo
-- Forwarded message -
From: Michael Ossipoff
Date: Fri, Oct 14, 2022 at 10:16 PM
Subject: Re: How to turn ecliptic longitude into solar declination?
To: Steve Lelievre
Or you could just use the ecliptic longitude, reckoned as usual from the
Vernal Equinox…multiply its sine
wrote:
> Hi,
>
> For a little project I did today, I needed the day's solar declination
> for the start, one third gone, and two-thirds gone, of each zodiacal
> month (i.e. approximately the 1st, 11th and 21st days of the zodiacal
> months).
>
> I treated each of the requ
Hi,
For a little project I did today, I needed the day's solar declination
for the start, one third gone, and two-thirds gone, of each zodiacal
month (i.e. approximately the 1st, 11th and 21st days of the zodiacal
months).
I treated each of the required dates as a multiple of 10 degrees
Yesterday the Solar-declination reached and passed the point 1/3 of the
way, back up from the Winter-Solstice, toward the Celestial-Equator.
7 Th (South-Solstice WeekDate Calendar)
Aquarius 19th (South-Solstice Ecliptic-Months Calendar)
Februarius 7th (Roman-Gregorian Calendar)
Michael Ossipoff
lto:rtbai...@telus.net> ; sundial@uni-koeln.de
<mailto:sundial@uni-koeln.de>
*Subject:* Re: Solar Declination
Hi Roger,
I had to change the date format in colum A and in the formula of colum
E. Maybe this is of concern for others too.
It is a matter of taste of course to use a spreadsheet for
to a free spreadsheet
calculation, which I provided.
Regards, Roger Bailey
From: Helmut Haase
Sent: Wednesday, October 26, 2016 12:07 PM
To: Roger Bailey ; sundial@uni-koeln.de
Subject: Re: Solar Declination
Hi Roger,
I had to change the date format in colum A and in the formula of colum E
<mailto:sundial@uni-koeln.de>
*Subject:* Solar Declination
Hello,
Can you provide a free accurate spreadsheet for the calculation of
daily solar declination across a leap year as well as non-leap ye
ger Bailey
From: Dan-George Uza
Sent: Tuesday, October 25, 2016 9:38 AM
To: sundial@uni-koeln.de
Subject: Solar Declination
Hello,
Can you provide a free accurate spreadsheet for the calculation of daily solar
declination across a leap year as well as non-leap year?
Thanks,
he most
renowned ephemeris sources (f.i. Astronomical Almanac or JPL Horizon).
Ciao.
Gian
2016-10-25 18:38 GMT+02:00 Dan-George Uza <cerculdest...@gmail.com>:
> Hello,
>
> Can you provide a free accurate spreadsheet for the calculation of daily
> solar declination across a leap year a
ool...@dickkoolish.com>:
> The Stellarium program will give you solar declination and also
> has an equation-of-time plugin.
>
> For smart phones, there is the LunaSolCal application.
>
>
>
>
> - Original Message -
> From:
> "Dan-George Uza" <cerculdest
this just say.
Regards Patrick
From: Dan-George Uza
Sent: Tuesday, October 25, 2016 5:38 PM
To: sundial@uni-koeln.de
Subject: Solar Declination
Hello,
Can you provide a free accurate spreadsheet for the calculation of daily solar
declination across a leap year as well as non-leap year?
Thanks
l Almanac or JPL Horizon).
> Ciao.
> Gian
>
>
> 2016-10-25 18:38 GMT+02:00 Dan-George Uza <cerculdest...@gmail.com>:
>
>> Hello,
>>
>> Can you provide a free accurate spreadsheet for the calculation of daily
>> solar declination across a leap year
ources (f.i. Astronomical Almanac or JPL Horizon).
> Ciao.
> Gian
>
>
> 2016-10-25 18:38 GMT+02:00 Dan-George Uza <cerculdest...@gmail.com>:
> Hello,
>
> Can you provide a free accurate spreadsheet for the calculation of daily
> solar declination across a lea
George Uza <cerculdest...@gmail.com>:
> Hello,
>
> Can you provide a free accurate spreadsheet for the calculation of daily
> solar declination across a leap year as well as non-leap year?
>
> Thanks,
>
> Dan Uza
>
> ---
Hello,
Can you provide a free accurate spreadsheet for the calculation of daily
solar declination across a leap year as well as non-leap year?
Thanks,
Dan Uza
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
shouldobserve its shadow whenthe
solar declination equals zero, not when it is equinox.If this moment
occurs at night, you're out of luck.Because if you check it the next day,
the shadow will already be north of the equinox line.
Thanks you all for your help with the
numbers.
Can't wait to check it each
: equinox solar declination
Hi, John!
Per the Dialist's Companion, I find the time of solar declination zero
to be 15:40:03. (I'm using somewhat central Tucson's coordinates as
32.22N, 110.97W) At 09:00, I get declination = 0.108127 deg (North).
Altitude is 33.679622 deg. I'll have to let you
Author - The Sun API
-Original Message-From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On
Behalf Of John CarmichaelSent: Saturday, 22 September 2001 8:53
AMTo: sundial@rrz.uni-koeln.deSubject: equinox solar
declination
Hi all:
I'm getting this message out a little l
Bailey
Walking Shadow Designs
N 51 W 115
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of John Carmichael
Sent: September 22, 2001 7:47 AM
To: Dave Bell
Cc: sundial@rrz.uni-koeln.de
Subject: Re: equinox solar declination
Dave:
Thanks so much Dave
:
[EMAIL PROTECTED]
To: John Carmichael ; sundial@rrz.uni-koeln.de
Sent: Saturday, September 22, 2001 8:19
AM
Subject: RE: equinox solar
declination
Dear John,
I calculated what you need (according to
Meeus' truncated VSOP87 theory
Hi all:
I'm getting this message out a little late, but
tomorrow on the equinox, I'd like to check the solar declination of the
nodus's shadow. (Ofthe Flandrau heliochronometer).I want to see if
the center of the shadow is centered exactly on the 0 degree line at the exact
moment
2 39.62
1.003346948
-Original Message-From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On
Behalf Of John CarmichaelSent: Friday, September 21, 2001 6:53
PMTo: sundial@rrz.uni-koeln.deSubject: equinox solar
declination
Hi all:
I'm getting this message out a little l
Hello Art,
Gianni has previously sent to this list (in 12/96, 2/98, and other
dates) some methods for calculating EoT and solar declination. I'm
sure he will be posting that material once more, perhaps in a new and
and even better version. Else I can send you copies of his earlier
am a relatively new list subscriber so I don't have the items you refer to.
Could you send me a copy of any expressions which give EoT as a
function of solar
declination.
About 10 years ago I wrote an Excel program giving EoT as a function of
Julian
date and faintly remember a recursion
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