Re: how to detect holiDays in ASP?

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Date: Sat, 5 Jun 2004 21:15:01 +0200

Dr John Stockton wrote:

>>The varying christian holidays depend on easter. And easter sunday is
>>IIRC the 3rd sunday after new/full moon in spring.
>
>You do not recall correctly. That is not the true rule, although it may
>often give the right result in Europe.
>
OK ok, I didn't claim my memory will withstand a scientific approval.

>For example, for Easter Sunday to be on the same date everywhere, one
>must effectively define the location whose date is given to the Full
>Moon. Hawaiian Full Moons are generally dated a day earlier than Maori
>ones.
Since these rules are originating from Rome or more precise the vatican,
it's the moon from there.

<snip>
>>To calculate the easter date was one of the very first things done by
>>computers. AFAIK the formula is from Gauss.
>
>Gauss is but one of those who have provided methods in full agreement
>with the Papal Rules. Not all of those who have provided methods have
>provided only methods reliable for all years.
>
ACK, the link in your posting is quite useful. I fear there is more
information provided the average user will ever need, meaning to much
information may hide the relevant parts.
IMO a solution for say the years 1900-2100 will suffice for most.
Who is in need to do astronomical calculations should also know where to
get more exact formulas for his range of years.
>
>BTW, the Papal Bull of 1582, which is the relevant originating authority
>for Leap Years and Easter, gives the Leap Rules explicitly but refers to
>some form of annexe for the Easter Rules themselves; the UK Acts of
>about 1751, which are the authority for the UK and its then and future
>colonies, omitting AU & NZ, similarly use an annexe. Does anyone know
>of a Web URL for either annexe?
>
Sorry no.
<snip>

-- 
Greetings
Matthias

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