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Which is (are) the shortest "days" of the year?



 
 
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  #1  
Old December 23rd 06, 12:33 PM posted to sci.astro.amateur
[email protected]
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Default Which is (are) the shortest "days" of the year?

Winter solstice was 0.22 dec 22nd, very close to midnight (in the uk).

How many minutes of daylight on the 21st?

How many on the 22nd?

Can there exist an adjacent day which has less daylight time than the
day on which the solstices fall?
  #2  
Old December 23rd 06, 12:52 PM posted to sci.astro.amateur
oriel36
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Default Which is (are) the shortest "days" of the year?


wrote:
Winter solstice was 0.22 dec 22nd, very close to midnight (in the uk).

How many minutes of daylight on the 21st?

How many on the 22nd?

Can there exist an adjacent day which has less daylight time than the
day on which the solstices fall?


You are very,very strange people.

The civil convenience of variations in daylight is mixed together with
planetary motions around the Sun while being described in a system of 3
years of 365 days and 1 year of 366 days.

5000 years ago there were men with enough sense to create a system
based on the annual cycle or at least use the daily cycle and annual
cycle together.The later calendrical system based on a 1461 day cycle
would have been a wonderful convenience and it still is however the
contemporary tendency to work the annual cycle through the calendrical
convenience of the Ra/Dec system is generating these incredible
questions on the length of daylight based on a civil day.

I did not know that a concept would emerge,at least after the
incredible power of Copernican reasoning,that would bypass even the
geocentric astronomers into sub-geocentric concepts with a celestial
sphere core.I clearly believe,even now,that it unfamiliarity with the
astronomical working principles based on the Earth's motions that is
creating a level of questioning that fall below entry level astronomy
even if I understand why the late 17th century guys what they did.

I hope to come back next year and have people throw back at me the
correct working principles which I have tried to promote for the last
number of years,apparently that is all I have left to give.

  #3  
Old December 23rd 06, 01:12 PM posted to sci.astro.amateur
Paul Schlyter[_2_]
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Default Which is (are) the shortest "days" of the year?

In article ,
wrote:
Winter solstice was 0.22 dec 22nd, very close to midnight (in the uk).

How many minutes of daylight on the 21st?

How many on the 22nd?


In Stockholm, Sweden, there were 365 minutes of daylight on Dec
20, 21, 22 and 23 this year. Dec 18, 19, 24 and 25 had 366 minutes of
daylight.

Can there exist an adjacent day which has less daylight time than the
day on which the solstices fall?


No. But the difference in daylight time will be minimal (i.e. measured
in seconds rather than minutes) on the days adjacent to the solstice.
The difference will be greater at higher latitudes, and is therefore
smaller in London than in Stockholm.




--
----------------------------------------------------------------
Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN
e-mail: pausch at stockholm dot bostream dot se
WWW: http://stjarnhimlen.se/
  #5  
Old December 24th 06, 11:02 AM posted to sci.astro.amateur
oriel36
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Posts: 1,189
Default Which is (are) the shortest "days" of the year?


Shawn wrote:
oriel36 wrote:
wrote:
Winter solstice was 0.22 dec 22nd, very close to midnight (in the uk).

How many minutes of daylight on the 21st?

How many on the 22nd?

Can there exist an adjacent day which has less daylight time than the
day on which the solstices fall?


You are very,very strange people.


Pot, kettle, black


There is only one precise astronomical meaning for the
longest/shortest day,the meaning generally given is a mere civil
convenience of longer or shorter daylight hours.

You are a strange bunch because the actual awareness for the varying
length of the natural daily cycle based on observing local noon is
crucial to discerning the magnificent human devised principles of the
24 hour day and how each of these days mesh with each other.Then you
move on to how the 16th century astronomers reworked this Equation of
Time system into a correlation between the pace of a clock in sync with
axial rotation at precisely 4 minutes for each degree of rotation.

I am a Christian who enjoys this time of year,not for the consumerist
event it has now become, but for the intutive faculty of faith to
appreciate how Christianity grafted in astronomical aspects of more
ancient traditions.The narrative of the synoptic gospel of Matthew is a
marvel at this,not just for the nod to the ancient sky watching
priests but for how it qualifies the antecedent genealogical structure.
-

http://en.wikipedia.org/wiki/Biblical_Magi

Indoctrination into the anti-intutive 'scientific method' has the
dubious reward of group ideology or the 'party line' whereas those who
are Christians enjoy the ability to look beyond the surface narratives
to a more satisfying message as an individual .The broad outlines of
these messages,held by genuine denominational Christianity become
sharper with familiarity and there is often no better Christian than
one who has previously rejected it and has come to see the point behind
it,more in surpassing denomination Christianity than bypassing it.

There is nothing stopping any Christian from investigating how the
Total length of the natural daily cycle was equalised to a 24 hour
cycle by very careful men who lived in antiquity.As for those who
beleive in less careful alternatives such as the justification of the
Earth's motions through a 'sidereal ' value then being neither
scientific nor Christian,there is nothing for you to do,say or
celebrate.

 




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