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Talk:Holidays related to Easter: Difference between revisions
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== Description ==
''"Eastern Orthodox Church eventually adopted the Gregorian calendar for the fixed holidays and no longer observes Christmas on its Julian date"'' - what? Christmas is celebrated on January 7th according to the Gregorian calendar, not December 25th. [[User:Русский|Русский]] ([[User talk:Русский|talk]]) 20:42, 6 March 2021 (UTC)
Also, there is some ambiguity in the page about which Easter calculus should be used and which calendar to display dates on the screen. If the computus depends on the church and there are only two of them, then the date on the screen, in my opinion, should be done using the civil (secular) calendar.
For example, Russian Easter is accurately calculated by the year number with just two expressions: d = (y % 19 * 19 + 15) % 30; d + = (y % 4 * 2 + y % 7 * 4 + 6 * d + 6) % 7. This rule was established by the Church Fathers and has not changed since 325 (for Russians, this is more important than for Catholics , because it is Easter that is the main holiday in Orthodox Christianity). Further, if the year is less than 1918 then we add the resulting number to March 22 and get the date according to the Julian calendar. Otherwise, we calculate the correction for the Gregorian calendar and display the date in the new style. Everything is simple and clear here.
For western churches, the situation is different: the Roman Church introduced a new algorithm in 1582, but countries adopted the new calendar gradually, until the mid-20th century. Therefore, it is difficult to determine in which calendar for which year to display the date. That is, the year 1582 has neither astronomical nor political significance, it is just the time of the proposal for a new calendar. I guess it should be parameterizable values. But most of the algorithms do not even take this into account, calculating the date of Easter in 400 according to the Catholics algorithm and displaying the date according to the Gregorian calendar, which, in my opinion, is absurd (remember that from the point of view of Christianity, all regulations and innovations of Catholics are heresy). [[User:Русский|Русский]] ([[User talk:Русский|talk]]) 10:21, 8 March 2021 (UTC)
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