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The perpetual calendar



 
 
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  #11  
Old February 19th 10, 11:19 AM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
James Hogg
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Default The perpetual calendar

Ruud Harmsen wrote:
Fri, 19 Feb 2010 10:34:10 +0100: James Hogg :
in sci.lang:

What could be simpler?


The Jewish calendar.


Is Pesach easier to calculate than Easter?

--
James
  #12  
Old February 19th 10, 12:47 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Ruud Harmsen
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Posts: 2
Default The perpetual calendar

Fri, 19 Feb 2010 11:19:32 +0100: James Hogg :
in sci.lang:

Ruud Harmsen wrote:
Fri, 19 Feb 2010 10:34:10 +0100: James Hogg :
in sci.lang:

What could be simpler?


The Jewish calendar.


Is Pesach easier to calculate than Easter?


Yes, because it's always on the same date (like all the other Festive
Days) in the Jewish calendar.

14-21/22 Nisan.
http://nl.wikipedia.org/wiki/Pesach

--
Ruud Harmsen, http://rudhar.com

  #13  
Old February 19th 10, 01:00 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Trond Engen
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Posts: 9
Default The perpetual calendar

John Atkinson skrev:

Halmyre wrote:

On 19 Feb, 04:58, "Ray O'Hara" wrote:

"Andrew Usher" wrote in message
...

Owing to the inconveniences which attend the shifting of the
calendar, and attempting in passing to create a more perfect Church
calendar, I say the following: [...]

The calendar has several sources, not just the Rome and the onewe habe
in fine as it is


I just wish they'd settle on a date for Easter and be done with it.


But, the whole point of Easter is that it has a full moon! You might as
well scrap the whole thing otherwise.


True. When accompanied by clear weather, as it often is, the full Easter
moon on the snow gives enough light to perform most tasks unaided. A
great help for those who spend Easter carrying a tent around in the
mountains. Clearly, a calendar that doesn't accomodate the needs of such
an important group isn't worth the van Gogh reproductions.

--
Trond Engen
  #14  
Old February 19th 10, 01:55 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Elijahovah
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Posts: 79
Default The perpetual calendar

THANK GOD OR THE DEVIL that NONE OF YOU RULE
  #15  
Old February 19th 10, 02:24 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Peter T. Daniels
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Posts: 200
Default The perpetual calendar

On Feb 19, 4:34*am, James Hogg wrote:
John Atkinson wrote:
Halmyre wrote:
On 19 Feb, 04:58, "Ray O'Hara" wrote:
"Andrew Usher" wrote in message


....


Owing to the inconveniences which attend the shifting of the
calendar, and attempting in passing to create a more perfect
Church calendar, I say the following: 1. That Christmas day
should be fixed to a Sunday, and this should be the Sunday
between Dec. 21 and 27, and that in all civilised countries the
Monday should be considered a holiday, or the Saturday if not
normally. 2. That similarly Easter day should be fixed to the
Sunday which is 15 weeks following Christmas. 3. That the leap
year rule be changed to have a leap year occur every fourth
save that it be delayed when the leap year would start on a
Thursday, and that this gives 7 leap years in every 29, which
is near enough. 4. That the perpetual calendar can be made, by
considering the first day of the year of weeks to occur on the
Sunday after the Assumption, and if this is the first possible
calendar day, it is called week 1, and otherwise week 2, and
every year runs through week 53. And this calendar ensures that
everything can be fixed to a day of a certain week, in
particular the American Thanksgiving must be made 31 days
before Christmas. 6. This is surely the best possible
arrangement that can be made, without disturbing the cycle of
weeks or that of calendar days inherited from the Romans.
Andrew Usher
The calendar has several sources, not just the Rome and the onewe
habe in fine as it is
I just wish they'd settle on a date for Easter and be done with it.


But, the whole point of Easter is that it has a full moon! *You might
as well scrap the whole thing otherwise. *Or are you suggesting that
we only take holidays at Easter every four years or so, when your
“settled” date just happens to correspond with the right lunar phase?


My Book of Common Prayer makes things easy by pointing out that "the
moon referred to in the definition of Easter Day is not the actual moon
of the heavens, but the Calendar Moon, or Moon of the Lunar Cycle, which
is counted as full on its fourteenth day, reckoned from the day of the
Calendar New Moon inclusive." Also, in a Bissextile Year "the number of
Sundays after Epiphany will be the same, as if Easter Day had fallen one
day later than it really does."


Which is why Easter and Passover rarely coincide -- we happen to have
had a spate of coincidence in recent years, but that'll soon be over.

What could be simpler?


The Muslim calendar -- no intercalated months, and no connection with
the solar year. So Ramadan drifts through the seasons.
  #16  
Old February 19th 10, 03:49 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
António Marques[_2_]
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Posts: 32
Default The perpetual calendar

Last time I looked, Symmetry454 was the epitome of calendar reform:

http://individual.utoronto.ca/kalendis/symmetry.htm

  #17  
Old February 19th 10, 04:22 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
António Marques[_2_]
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Posts: 32
Default The perpetual calendar

Zhang Dawei wrote (19-02-2010 15:08):
António Marques wrote:

Last time I looked, Symmetry454 was the epitome of calendar reform:

http://individual.utoronto.ca/kalendis/symmetry.htm


I wonder whether this is supposed to be a proposal for a universal
change in the calendar, though? If it is, then I question the need for
every country in the world to celebrate purely USA political and
social events (the yellow shaded days), which were said to be
"permanently fixed". On that basis alone, I would say it resoundingly
fails.


How can you even *think* that is the case?? How can you even *notice* the
holidays shown are US-specific? Obviously the US holidays are there to
illustrate how it works, not to be used universally. Likewise the numerals
and month names. Sheesh.
  #18  
Old February 19th 10, 04:23 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Antares 531
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Posts: 124
Default The perpetual calendar

On Fri, 19 Feb 2010 00:02:47 -0800 (PST), Halmyre
wrote:

On 19 Feb, 04:58, "Ray O'Hara" wrote:
"Andrew Usher" wrote in message

...





Owing to the inconveniences which attend the shifting of the calendar,
and attempting in passing to create a more perfect Church calendar, I
say the following:


1. That Christmas day should be fixed to a Sunday, and this should be
the Sunday between Dec. 21 and 27, and that in all civilised countries
the Monday should be considered a holiday, or the Saturday if not
normally.


2. That similarly Easter day should be fixed to the Sunday which is 15
weeks following Christmas.


3. That the leap year rule be changed to have a leap year occur every
fourth save that it be delayed when the leap year would start on a
Thursday, and that this gives 7 leap years in every 29, which is near
enough.


4. That the perpetual calendar can be made, by considering the first
day of the year of weeks to occur on the Sunday after the Assumption,
and if this is the first possible calendar day, it is called week 1,
and otherwise week 2, and every year runs through week 53. And this
calendar ensures that everything can be fixed to a day of a certain
week, in particular the American Thanksgiving must be made 31 days
before Christmas.


6. This is surely the best possible arrangement that can be made,
without disturbing the cycle of weeks or that of calendar days
inherited from the Romans.


Andrew Usher


The calendar has several sources, not just the Rome and the onewe habe in
fine as it is


I just wish they'd settle on a date for Easter and be done with it.

Back before it became "Easter" and was still a celebration of Queen
Ishtar's glory, with the rabbit and the egg as fertility symbols, what
date was used? Gordon
  #19  
Old February 19th 10, 04:30 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Yusuf B Gursey
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Posts: 78
Default The perpetual calendar

On Feb 19, 8:24*am, "Peter T. Daniels" wrote:
On Feb 19, 4:34*am, James Hogg wrote:





John Atkinson wrote:
Halmyre wrote:
On 19 Feb, 04:58, "Ray O'Hara" wrote:
"Andrew Usher" wrote in message


...


Owing to the inconveniences which attend the shifting of the
calendar, and attempting in passing to create a more perfect
Church calendar, I say the following: 1. That Christmas day
should be fixed to a Sunday, and this should be the Sunday
between Dec. 21 and 27, and that in all civilised countries the
Monday should be considered a holiday, or the Saturday if not
normally. 2. That similarly Easter day should be fixed to the
Sunday which is 15 weeks following Christmas. 3. That the leap
year rule be changed to have a leap year occur every fourth
save that it be delayed when the leap year would start on a
Thursday, and that this gives 7 leap years in every 29, which
is near enough. 4. That the perpetual calendar can be made, by
considering the first day of the year of weeks to occur on the
Sunday after the Assumption, and if this is the first possible
calendar day, it is called week 1, and otherwise week 2, and
every year runs through week 53. And this calendar ensures that
everything can be fixed to a day of a certain week, in
particular the American Thanksgiving must be made 31 days
before Christmas. 6. This is surely the best possible
arrangement that can be made, without disturbing the cycle of
weeks or that of calendar days inherited from the Romans.
Andrew Usher
The calendar has several sources, not just the Rome and the onewe
habe in fine as it is
I just wish they'd settle on a date for Easter and be done with it.


But, the whole point of Easter is that it has a full moon! *You might
as well scrap the whole thing otherwise. *Or are you suggesting that
we only take holidays at Easter every four years or so, when your
“settled” date just happens to correspond with the right lunar phase?


My Book of Common Prayer makes things easy by pointing out that "the
moon referred to in the definition of Easter Day is not the actual moon
of the heavens, but the Calendar Moon, or Moon of the Lunar Cycle, which
is counted as full on its fourteenth day, reckoned from the day of the
Calendar New Moon inclusive." Also, in a Bissextile Year "the number of
Sundays after Epiphany will be the same, as if Easter Day had fallen one
day later than it really does."


Which is why Easter and Passover rarely coincide -- we happen to have
had a spate of coincidence in recent years, but that'll soon be over.

What could be simpler?


The Muslim calendar -- no intercalated months, and no connection with
the solar year. So Ramadan drifts through the seasons.


Ramadan is celebrated according to the actual siting of the crescent,
not the (various) algorithms used for civil purposes, though I think
some "cheat" by using the algorithms (there are a couple most
frequently used). last time in Iraq the Shia and the Sunni observed it
at different dates. so it is rather complicated.
  #20  
Old February 19th 10, 04:35 PM posted to sci.math,sci.physics,sci.astro,sci.lang,alt.usage.english
Yusuf B Gursey
external usenet poster
 
Posts: 78
Default The perpetual calendar

On Feb 19, 4:34*am, James Hogg wrote:
John Atkinson wrote:
Halmyre wrote:
On 19 Feb, 04:58, "Ray O'Hara" wrote:
"Andrew Usher" wrote in message


....


Owing to the inconveniences which attend the shifting of the
calendar, and attempting in passing to create a more perfect
Church calendar, I say the following: 1. That Christmas day
should be fixed to a Sunday, and this should be the Sunday
between Dec. 21 and 27, and that in all civilised countries the
Monday should be considered a holiday, or the Saturday if not
normally. 2. That similarly Easter day should be fixed to the
Sunday which is 15 weeks following Christmas. 3. That the leap
year rule be changed to have a leap year occur every fourth
save that it be delayed when the leap year would start on a
Thursday, and that this gives 7 leap years in every 29, which
is near enough. 4. That the perpetual calendar can be made, by
considering the first day of the year of weeks to occur on the
Sunday after the Assumption, and if this is the first possible
calendar day, it is called week 1, and otherwise week 2, and
every year runs through week 53. And this calendar ensures that
everything can be fixed to a day of a certain week, in
particular the American Thanksgiving must be made 31 days
before Christmas. 6. This is surely the best possible
arrangement that can be made, without disturbing the cycle of
weeks or that of calendar days inherited from the Romans.
Andrew Usher
The calendar has several sources, not just the Rome and the onewe
habe in fine as it is
I just wish they'd settle on a date for Easter and be done with it.


But, the whole point of Easter is that it has a full moon! *You might
as well scrap the whole thing otherwise. *Or are you suggesting that
we only take holidays at Easter every four years or so, when your
“settled” date just happens to correspond with the right lunar phase?


My Book of Common Prayer makes things easy by pointing out that "the
moon referred to in the definition of Easter Day is not the actual moon
of the heavens, but the Calendar Moon, or Moon of the Lunar Cycle, which
is counted as full on its fourteenth day, reckoned from the day of the
Calendar New Moon inclusive." Also, in a Bissextile Year "the number of
Sundays after Epiphany will be the same, as if Easter Day had fallen one
day later than it really does."


the Orthodox (Eastern) churches have a slightly different system.
dunno exactly what it is.

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

Easter

....

Easter is a moveable feast, meaning it is not fixed in relation to the
civil calendar. The First Council of Nicaea (325) established the date
of Easter as the first Sunday after the full moon (the Paschal Full
Moon) following the vernal equinox.[3] Ecclesiastically, the equinox
is reckoned to be on March 21 (regardless of the astronomically
correct date), and the "Full Moon" is not necessarily the
astronomically correct date. The date of Easter therefore varies
between March 22 and April 25. Eastern Christianity bases its
calculations on the Julian Calendar whose March 21 corresponds, during
the twenty-first century, to April 3 in the Gregorian Calendar, in
which calendar their celebration of Easter therefore varies between
April 4 and May 8.




What could be simpler?

--
James


 




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