Wednesday, May 2, 2012

The Easter

Easter

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Easter
Pascha
Easter  Pascha
Depiction of the resurrection of Jesus
by Bernhard Plockhorst, 19th century
Type Christian, cultural
Significance Celebrates the resurrection of Jesus
2011 date 24 April (both Western and Eastern)
2012 date 8 April (Western)
15 April (Eastern)
2013 date 31 March (Western)
5 May (Eastern)
Celebrations Church services , festive family meals, Easter egg hunts and gift-giving
Observances Prayer, all-night vigil, sunrise service
Related to Passover, of which it is regarded the Christian equivalent; Septuagesima, Sexagesima, Quinquagesima, Shrove Tuesday, Ash Wednesday, Clean Monday, Lent, Great Lent, Palm Sunday, Holy Week, Maundy Thursday, Good Friday, and Holy Saturday which lead up to Easter; and Thomas Sunday, Ascension, Pentecost, Trinity Sunday, and Corpus Christi which follow it.
Easter (Old English: Ēostre) or Pascha (Greek: Πάσχα, Paskha; Aramaic: פַּסחאPasḥa; from Hebrew: פֶּסַחPesaḥ)[1] is a Christian festival and holiday celebrating the resurrection of Jesus Christ on the third day after his crucifixion at Calvary as described in the New Testament.[2][3] Easter is preceded by Lent, a forty-day period of fasting, prayer, and penance. The last week of Lent is called Holy Week, and it contains the days of the Easter Triduum, including Maundy Thursday, commemorating Maundy and the Last Supper,[4][5] as well as Good Friday, commemorating the crucifixion and death of Jesus.[6] Easter is followed by a fifty-day period called Eastertide or the Easter Season, ending with Pentecost Sunday. The festival is referred to in English by a variety of different names including Easter Day, Easter Sunday,[7] Resurrection Day and Resurrection Sunday.
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 northern hemisphere's vernal equinox.[8] Ecclesiastically, the equinox is reckoned to be on 21 March (even though the equinox occurs, astronomically speaking, on 20 March in most years), and the "Full Moon" is not necessarily the astronomically correct date. The date of Easter therefore varies between 22 March and 25 April. Eastern Christianity bases its calculations on the Julian calendar whose 21 March corresponds, during the 21st century, to 3 April in the Gregorian calendar, in which the celebration of Easter therefore varies between 4 April and 8 May.
Easter is linked to the Jewish Passover by much of its symbolism, as well as by its position in the calendar. In many languages, the words for "Easter" and "Passover" are etymologically related or homonymous.[9] Easter customs vary across the Christian world, but attending sunrise services, exclaiming the Paschal greeting, clipping the church and decorating Easter eggs, a symbol of the empty tomb, are common motifs.[10][11][12] Additional customs include egg hunting, the Easter Bunny, and Easter parades, which are observed by both Christians and some non-Christians.[13][14][15][16]

Contents

Etymology

A stained glass window depicting the Passover Lamb, a concept integral to the foundation of Easter (Pascha).[17][18]

2nd century

The second century equivalent of Easter and the Paschal Triduum was called by both Greek and Latin writers "Pascha (πάσχα)," a Greek transliteration of the Aramaic form of the Hebrew פֶּסַח, the Passover feast of Exodus 12.[19] Paul writes from Ephesus that "Christ our Pascha has been sacrificed for us," although the Ephesian Christians were not the first to hear that Exodus 12 spoke about the death of Jesus.[20] In most of the non-English speaking world, the feast today is known by the name Pascha and words derived from it.[1][17]

English and German

Ostara (1884) by Johannes Gehrts
The modern English term Easter developed from the Old English word Ēastre or Ēostre (IPA: [ˈæːɑstre, ˈeːostre]), which itself developed prior to 899, originally referring to the name of the Anglo-Saxon goddess Ēostre.[21] Bede notes that the native Old English month Ēostur-monath (Old English "Ēostre-month") was equivalent to the month of April, yet that feasts held in the goddess's honor during Ēostur-monath had gone out of use by the time of his writing and had been replaced with the Christian custom of the "Paschal season". The feast was also historically referred to in English as "Pash" or "Pace",[22][23] from the Latin pascha (see below).
Using comparative linguistic evidence from continental Germanic sources, the 19th century scholar Jacob Grimm proposed the existence of a cognate form of Ēostre among the pre-Christian beliefs of the continental Germanic peoples, whose name he reconstructed as *Ostara. Since Grimm's time, linguists have identified the goddess as a Germanic form of the reconstructed Proto-Indo-European goddess of the dawn, *Hausos. Theories connecting Ēostre with records of Germanic Easter customs (including hares and eggs) have been proposed.
Modern German features the cognate term Ostern, but otherwise, Germanic languages generally use the non-native term pascha for the event.

Semitic, Romance, Celtic and other Germanic languages

The Greek word Πάσχα and hence the Latin form Pascha is derived from Hebrew Pesach (פֶּסַח) meaning the festival of Passover. In Greek the word Ἀνάστασις Anástasis (upstanding, up-rising, resurrection) is used also as an alternative.
Christians speaking Arabic or other Semitic languages generally use names cognate to Pesaḥ. For instance, the second word of the Arabic name of the festival عيد الفصح ʿĪd al-Fiṣḥ, [ʕiːd ælfisˤħ] has the root F-Ṣ-Ḥ, which given the sound laws applicable to Arabic is cognate to Hebrew P-S-Ḥ, with "Ḥ" realized as /x/ in Modern Hebrew and /ħ/ in Arabic. Arabic also uses the term عيد القيامة ʿĪd al-Qiyāmah, [ʕiːd ælqiyæːmæh], meaning "festival of the resurrection", but this term is less common. In Maltese the word is L-Għid, where "Għ" stands for the common Semitic consonant Ayin, and is directly derived from Arabic ʿĪd, which in both cases means "festival". In Ge'ez and the modern Ethiosemitic languages of Ethiopia and Eritrea, two forms exist: ፋሲካ ("Fasika", fāsīkā) from Greek Pascha, and ትንሣኤ ("Tensae", tinśā'ē), the latter from the Semitic root N-Ś-', meaning "to rise" (cf. Arabic nasha'a—ś merged with "sh" in Arabic and most non-South Semitic languages).
In all Romance languages, the name of the Easter festival is derived from the Latin Pascha. In Spanish, Easter is Pascua, in Italian and Catalan Pasqua, in Portuguese Páscoa and in Romanian Paşti. In French, the name of Easter Pâques also derives from the Latin word but the s following the a has been lost and the two letters have been transformed into a â with a circumflex accent by elision. Additionally in Romanian, the only Romance language of an Eastern church, the word Înviere (resurrection, cf. Greek Ἀνάστασις, [anástasis]) is also used.
In all modern Celtic languages the term for Easter is derived from Latin. In Brythonic languages this has yielded Welsh Pasg, Cornish and Breton Pask. In Goidelic languages the word was borrowed before these languages had re-developed the /p/ sound and as a result the initial /p/ was replaced with /k/. This yielded Irish Cáisc, Gaelic Càisg and Manx Caisht. These terms are normally used with the definite article in Goidelic languages, causing lenition in all cases: An Cháisc, A' Chàisg and Y Chaisht.
In Dutch, Easter is known as Pasen and in the Scandinavian languages Easter is known as påske (Danish and Norwegian), påsk (Swedish), páskar (Icelandic) and páskir (Faeroese). The name is derived directly from Hebrew Pesach.[24] The letter å is pronounced /oː/, derived from an older aa, and an alternate spelling is paaske or paask.

Slavic languages

In most Slavic languages, the name for Easter either means "Great Day" or "Great Night". For example, Wielkanoc, Veľká noc, Velika noč and Velikonoce mean "Great Night" or "Great Nights" in Polish, Slovak, Slovenian and Czech, respectively. Велигден (Veligden), Великдень (Velykden), Великден (Velikden), and Вялікдзень (Vyalikdzyen') mean "The Great Day" in Macedonian, Ukrainian, Bulgarian, and Belarusian, respectively.
In Croatian, however, the day's name reflects a particular theological connection: it is called Uskrs, meaning "Resurrection". It is also called Vazam (Vzem or Vuzem in Old Croatian), which is a noun that originated from the Old Church Slavonic verb vzeti (now uzeti in Croatian, meaning "to take"). In Serbian Easter is called Vaskrs, a liturgical form inherited from the Serbian recension of Church Slavonic, corresponding to Croatian Uskrs. The archaic term Velja noć (velmi: Old Slavic for "great"; noć: "night") was used in Croatian while the term Velikden ("Great Day") was used in Serbian. It should be noted that in these languages the prefix Velik (Great) is used in the names of the Holy Week and the three feast days preceding Easter.
Another exception is Russian, in which the name of the feast, Пасха (Paskha), is a borrowing of the Greek form via Old Church Slavonic.[25]

Finno-Ugric languages

In Finnish the name for Easter pääsiäinen, traces back to the verb pääse- meaning to be released, as does the Sámi word Beassážat[citation needed]. The Estonian name lihavõtted and the Hungarian húsvét, however, literally mean the taking of the meat, relating to the end of the Great Lent fasting period.

Theological significance

The New Testament teaches that the resurrection of Jesus, which Easter celebrates, is a foundation of the Christian faith.[26] The resurrection established Jesus as the powerful Son of God[27] and is cited as proof that God will judge the world in righteousness.[28] God has given Christians "a new birth into a living hope through the resurrection of Jesus Christ from the dead".[29] Christians, through faith in the working of God[30] are spiritually resurrected with Jesus so that they may walk in a new way of life.[31]
Easter is linked to the Passover and Exodus from Egypt recorded in the Old Testament through the Last Supper and crucifixion that preceded the resurrection. According to the New Testament, Jesus gave the Passover meal a new meaning, as he prepared himself and his disciples for his death in the upper room during the Last Supper. He identified the loaf of bread and cup of wine as his body soon to be sacrificed and his blood soon to be shed. Paul states, "Get rid of the old yeast that you may be a new batch without yeast—as you really are. For Christ, our Passover lamb, has been sacrificed";[32] this refers to the Passover requirement to have no yeast in the house and to the allegory of Jesus as the Paschal lamb.
One interpretation of the Gospel of John is that Jesus, as the Passover lamb, was crucified at roughly the same time as the Passover lambs were being slain in the temple, on the afternoon of Nisan 14.[33] The scriptural instructions specify that the lamb is to be slain "between the two evenings", that is, at twilight. By the Roman period, however, the sacrifices were performed in the mid-afternoon. Josephus, Jewish War 6.10.1/423 ("They sacrifice from the ninth to the eleventh hour"). Philo, Special Laws 2.27/145 ("Many myriads of victims from noon till eventide are offered by the whole people"). This interpretation, however, is inconsistent with the chronology in the Synoptic Gospels. It assumes that text literally translated "the preparation of the passover" in John 19:14 refers to Nisan 14 (Preparation Day for the Passover) and not necessarily to Yom Shishi (Friday, Preparation Day for Sabbath)[34][35][36][37] and that the priests' desire to be ritually pure in order to "eat the passover"[38] refers to eating the Passover lamb, not to the public offerings made during the days of Unleavened Bread.[39]

In the early Church

The first Christians, Jewish and Gentile, were certainly aware of the Hebrew calendar (Acts 2:1; 12:3; 20:6; 27:9; 1 Cor 16:8), but there is no direct evidence that they celebrated any specifically Christian annual festivals. Direct evidence for the Easter festival begins to appear in the mid-2nd century. Perhaps the earliest extant primary source referencing Easter is a mid-2nd century Paschal homily attributed to Melito of Sardis, which characterizes the celebration as a well-established one.[40] Evidence for another kind of annual Christian festival, the commemoration of martyrs, begins to appear at about the same time as evidence for the celebration of Easter.[41] But while martyrs' days (usually the individual dates of martyrdom) were celebrated on fixed dates in the local solar calendar, the date of Easter was fixed by means of the local Jewish lunisolar calendar. This is consistent with the celebration of Easter having entered Christianity during its earliest, Jewish period, but does not leave the question free of doubt.[42]
The ecclesiastical historian Socrates Scholasticus (b. 380) attributes the observance of Easter by the church to the perpetuation of its custom, "just as many other customs have been established," stating that neither Jesus nor his Apostles enjoined the keeping of this or any other festival. Although he describes the details of the Easter celebration as deriving from local custom, he insists the feast itself is universally observed.[43]

Second-century controversy

By the later 2nd century, it was accepted that the celebration of Pascha (Easter) was a practice of the disciples and an undisputed tradition. The Quartodeciman controversy, the first of several Paschal/Easter controversies, then arose concerning the date on which Pascha should be celebrated.
The term "Quartodeciman" refers to the practice of celebrating Pascha or Easter on Nisan 14 of the Hebrew calendar, "the LORD's passover" (Leviticus 23:5). According to the church historian Eusebius, the Quartodeciman Polycarp (bishop of Smyrna, by tradition a disciple of John the Evangelist) debated the question with Anicetus (bishop of Rome). The Roman province of Asia was Quartodeciman, while the Roman and Alexandrian churches continued the fast until the Sunday following, wishing to associate Easter with Sunday. Neither Polycarp nor Anicetus persuaded the other, but they did not consider the matter schismatic either, parting in peace and leaving the question unsettled.
Controversy arose when Victor, bishop of Rome a generation after Anicetus, attempted to excommunicate Polycrates of Ephesus and all other bishops of Asia for their Quartodecimanism. According to Eusebius, a number of synods were convened to deal with the controversy, which he regarded as all ruling in support of Easter on Sunday.[44] Polycrates (c. 190), however wrote to Victor defending the antiquity of Asian Quartodecimanism. Victor's attempted excommunication was apparently rescinded and the two sides reconciled upon the intervention of bishop Irenaeus and others, who reminded Victor of the tolerant precedent of Anicetus.
Quartodecimanism seems to have lingered into the 4th century, when Socrates of Constantinople recorded that some Quartodecimans were deprived of their churches by John Chrysostom[45] and that some were harassed by Nestorius.[46]

Third/fourth-century controversy and Council

It is not known how long the Nisan 14 practice continued. But both those who followed the Nisan 14 custom, and those who set Easter to the following Sunday (the Sunday of Unleavened Bread) had in common the custom of consulting their Jewish neighbors to learn when the month of Nisan would fall, and setting their festival accordingly. By the later 3rd century, however, some Christians began to express dissatisfaction with the custom of relying on the Jewish community to determine the date of Easter. The chief complaint was that the Jewish communities sometimes erred in setting Passover to fall before the northern hemisphere spring equinox. Anatolius of Laodicea in the later 3rd century wrote:
Those who place [the first lunar month of the year] in [the twelfth zodiacal sign before the spring equinox] and fix the Paschal fourteenth day accordingly, make a great and indeed an extraordinary mistake[47]
Peter, bishop of Alexandria (died 312), had a similar complaint
On the fourteenth day of [the month], being accurately observed after the equinox, the ancients celebrated the Passover, according to the divine command. Whereas the men of the present day now celebrate it before the equinox, and that altogether through negligence and error.[48]
The Sardica paschal table[49] confirms these complaints, for it indicates that the Jews of some eastern Mediterranean city (possibly Antioch) fixed Nisan 14 on 11 March (Julian) in AD 328, on 5 March in AD 334, on 2 March in AD 337, and on 10 March in AD 339, all well before the spring equinox.[50]
Because of this dissatisfaction with reliance on the Jewish calendar, some Christians began to experiment with independent computations.[51] Others, however, felt that the customary practice of consulting Jews should continue, even if the Jewish computations were in error. A version of the Apostolic Constitutions used by the sect of the Audiani advised:
Do not do your own computations, but instead observe Passover when your brethren from the circumcision do. If they err [in the computation], it is no matter to you....[52]
Two other objections that some Christians may have had to maintaining the custom of consulting the Jewish community in order to determine Easter are implied in Constantine's letter from the Council of Nicea to the absent bishops:
It appeared an unworthy thing that in the celebration of this most holy feast we should follow the practice of the Jews...For we have it in our power, if we abandon their custom, to prolong the due observance of this ordinance to future ages by a truer order...For their boast is absurd indeed, that it is not in our power without instruction from them to observe these things....Being altogether ignorant of the true adjustment of this question, they sometimes celebrate Passover twice in the same year.[53]
The reference to Passover twice in the same year might refer to the geographical diversity that existed at that time in the Jewish calendar, due in large measure to the breakdown of communications in the Empire. Jews in one city might determine Passover differently from Jews in another city.[54] The reference to the Jewish "boast", and, indeed, the strident anti-Jewish tone of the whole passage, suggests another issue: some Christians thought that it was undignified for Christians to depend on Jews to set the date of a Christian festival.
This controversy between those who advocated independent computations, and those who wished to continue the custom of relying on the Jewish calendar, was formally resolved by the First Council of Nicaea in 325 (see below), which endorsed the move to independent computations, effectively requiring the abandonment of the old custom of consulting the Jewish community in those places where it was still used. That the older custom (called "protopaschite" by historians) did not at once die out, but persisted for a time, is indicated by the existence of canons[55] and sermons[56] against it.
Some historians have argued that mid-4th century Roman authorities, in an attempt to enforce the Nicene decision on Easter, attempted to interfere with the Jewish calendar. This theory was developed by S. Liebermann,[57] and is repeated by S. Safrai in the Ben-Sasson History of the Jewish People.[58] This view receives no support, however, in surviving mid-4th century Roman legislation on Jewish matters.[59] The Historian Procopius, in his Secret History,[60] claims that the emperor Justinian attempted to interfere with the Jewish calendar in the 6th century, and a modern writer has suggested[61] that this measure may have been directed against the protopaschites. However, none of Justinian's surviving edicts dealing with Jewish matters is explicitly directed against the Jewish calendar,[62] making the interpretation of Procopius's statement a complex matter.

Date

Dates for Easter
1982–2022
In Gregorian dates
Year Western Eastern
1982 11 April 18 April
1983 3 April 8 May
1984 22 April
1985 7 April 14 April
1986 30 March 4 May
1987 19 April
1988 3 April 10 April
1989 26 March 30 April
1990 15 April
1991 31 March 7 April
1992 19 April 26 April
1993 11 April 18 April
1994 3 April 1 May
1995 16 April 23 April
1996 7 April 14 April
1997 30 March 27 April
1998 12 April 19 April
1999 4 April 11 April
2000 23 April 30 April
2001 15 April
2002 31 March 5 May
2003 20 April 27 April
2004 11 April
2005 27 March 1 May
2006 16 April 23 April
2007 8 April
2008 23 March 27 April
2009 12 April 19 April
2010 4 April
2011 24 April
2012 8 April 15 April
2013 31 March 5 May
2014 20 April
2015 5 April 12 April
2016 27 March 1 May
2017 16 April
2018 1 April 8 April
2019 21 April 28 April
2020 12 April 19 April
2021 4 April 2 May
2022 17 April 24 April
Easter and the holidays that are related to it are moveable feasts, in that they do not fall on a fixed date in the Gregorian or Julian calendars (both of which follow the cycle of the sun and the seasons). Instead, the date for Easter is determined on a lunisolar calendar similar to the Hebrew 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 northern hemisphere's vernal equinox.[8] Ecclesiastically, the equinox is reckoned to be on 21 March (even though the equinox occurs, astronomically speaking, on 20 March in most years), and the "Full Moon" is not necessarily the astronomically correct date.
In Western Christianity, using the Gregorian calendar, Easter always falls on a Sunday between 22 March and 25 April, inclusively.[63] The following day, Easter Monday, is a legal holiday in many countries with predominantly Christian traditions.
Eastern Christianity bases its calculations on the Julian Calendar. Due to the 13-day difference between the calendars between 1900 and 2099, 21 March corresponds, during the 21st century, to 3 April in the Gregorian Calendar. Easter therefore varies between 4 April and 8 May on the Gregorian calendar (the Julian calendar is no longer used as the civil calendar of the countries where Eastern Christian traditions predominate). Among the Oriental Orthodox some churches have changed from the Julian to the Gregorian calendar and the date for Easter as for other fixed and moveable feasts is the same as in the Western church.[64]
The precise date of Easter has at times been a matter for contention. At the First Council of Nicaea in 325 it was decided that all Christian churches would celebrate Easter on the same day, which would be computed independently of any Jewish calculations to determine the date of Passover. It is however probable (though no contemporary account of the Council's decisions has survived) that no method of determining the date was specified by the Council. Epiphanius of Salamis wrote in the mid-4th century:
...the emperor...convened a council of 318 bishops...in the city of Nicea...They passed certain ecclesiastical canons at the council besides, and at the same time decreed in regard to the Passover that there must be one unanimous concord on the celebration of God's holy and supremely excellent day. For it was variously observed by people....[65]
In the years following the council, the computational system that was worked out by the church of Alexandria came to be normative. It took a while for the Alexandrian rules to be adopted throughout Christian Europe, however. The Church of Rome continued to use an 84-year lunisolar calendar cycle from the late 3rd century until 457. It then switched to an adaptation by Victorius of Aquitaine of the Alexandrian rules. Because this Victorian cycle differed from the Alexandrian cycle in the dates of some of the Paschal Full Moons, and because it tried to respect the Roman custom of fixing Easter to the Sunday in the week of the 16th to the 22nd of the lunar month (rather than the 15th to the 21st as at Alexandria), by providing alternative "Latin" and "Greek" dates in some years, occasional disagreements from the date of Easter as fixed by Alexandrian rules continued.[66][67] The Alexandrian rules were adopted in their entirety in the 6th century. From this time, therefore, all disputes between Alexandria and Rome as to the correct date for Easter cease, as both churches were using identical tables.
Early Christians in Britain and Ireland also used an 84-year cycle. From the 5th century onward this cycle set its equinox to 25 March and fixed Easter to the Sunday falling in the 14th to the 20th of the lunar month inclusive.[68][69] This 84-year cycle was replaced by the Alexandrian method in the course of the 7th and 8th centuries. Churches in western continental Europe used a late Roman method until the late 8th century during the reign of Charlemagne, when they finally adopted the Alexandrian method. Since 1582, when the Catholic Church adopted the Gregorian calendar while the Eastern Orthodox and most Oriental Orthodox Churches retained the Julian calendar, the date on which Easter is celebrated has again differed.

Computations

In 725, Bede succinctly wrote, "The Sunday following the full Moon which falls on or after the equinox will give the lawful Easter."[70] However, this does not reflect the actual ecclesiastical rules precisely. One reason for this is that the full moon involved (called the Paschal full moon) is not an astronomical full moon, but the 14th day of a calendar lunar month. Another difference is that the astronomical vernal equinox is a natural astronomical phenomenon, which can fall on 19, 20 March, or 21, while the ecclesiastical date is fixed by convention on 21 March.[71]
In applying the ecclesiastical rules, Christian churches use 21 March as the starting point in determining the date of Easter, from which they find the next full moon, etc. The Eastern Orthodox and Oriental Orthodox Churches continue to use the Julian calendar. Their starting point in determining the date of Orthodox Easter is also 21 March, but according to the Julian reckoning, which currently corresponds to 3 April in the Gregorian calendar. In addition, the lunar tables of the Julian calendar are four days (sometimes five days) behind those of the Gregorian calendar. The 14th day of the lunar month according to the Gregorian system is only the 9th or 10th day according to the Julian. The result of this combination of solar and lunar discrepancies is divergence in the date of Easter in most years (see table).
Easter is determined on the basis of lunisolar cycles. The lunar year consists of 30-day and 29-day lunar months, generally alternating, with an embolismic month added periodically to bring the lunar cycle into line with the solar cycle. In each solar year (1 January to 31 December inclusive), the lunar month beginning with an ecclesiastical new moon falling in the 29-day period from 8 March to 5 April inclusive is designated as the paschal lunar month for that year. Easter is the third Sunday in the paschal lunar month, or, in other words, the Sunday after the paschal lunar month's 14th day. The 14th of the paschal lunar month is designated by convention as the Paschal full moon, although the 14th of the lunar month may differ from the date of the astronomical full moon by up to two days.[72] Since the ecclesiastical new moon falls on a date from 8 March to 5 April inclusive, the paschal full moon (the 14th of that lunar month) must fall on a date from 21 March to 18 April inclusive.
Accordingly, Gregorian Easter can fall on 35 possible dates—between 22 March and 25 April inclusive.[73] It last fell on 22 March in 1818, and will not do so again until 2285. It fell on 23 March in 2008, but will not do so again until 2160. Easter last fell on the latest possible date, 25 April, in 1943 and will next fall on that date in 2038. However, it fell on 24 April, just one day before this latest possible date, in 2011 and will not do so again until 2095. The cycle of Easter dates repeats after exactly 5,700,000 years, with 19 April being the most common date, happening 220,400 times or 3.9%, compared to the median for all dates of 189,525 times or 3.3%.
The Gregorian calculation of Easter was based on a method devised by the Calabrian doctor Aloysius Lilius (or Lilio) for adjusting the epacts of the moon,[74] and has been adopted by almost all Western Christians and by Western countries who celebrate national holidays at Easter. For the British Empire and colonies, a determination of the date of Easter Sunday using Golden Numbers and Sunday letters was defined by the Calendar (New Style) Act 1750 with its Annexe. This was designed to exactly match the Gregorian calculation.

Relationship to date of Passover

In determining the date of the Gregorian and Julian Easter a lunisolar cycle is followed. In determining the date of the Jewish Passover a lunisolar calendar is also used, and because Easter always falls on a Sunday it usually falls up to a week after the first day of Passover (Nisan 15 in the Hebrew calendar). However, the differences in the rules between the Hebrew and Gregorian cycles results in Passover falling about a month after Easter in three years of the 19-year cycle. These occur in years 3, 11, and 14 of the Gregorian 19-year cycle (corresponding respectively to years 19, 8, and 11 of the Jewish 19-year cycle).
The reason for the difference is the different scheduling of embolismic months in the two cycles.
In addition, without changes to either calendar, the frequency of monthly divergence between the two festivals will increase over time as a result of the differences in the implicit solar years: the implicit mean solar year of the Hebrew calendar is 365.2468 days while that of the Gregorian calendar is 365.2425 days. In years 2200–2299, for example, the start of Passover will be about a month later than Gregorian Easter in four years out of nineteen.
Since in the modern Hebrew calendar Nisan 15 can never fall on Monday, Wednesday, or Friday, the seder of Nisan 15 never falls on the night of Maundy Thursday. The second seder, observed in some Jewish communities on the second night of Passover can, however, occur on Thursday night.[citation needed]
Because the Julian calendar's implicit solar year has drifted further over the centuries than those of the Gregorian or Hebrew calendars, Julian Easter is a lunation later than Gregorian Easter in five years out of nineteen, namely years 3, 8, 11, 14, and 19 of the Christian cycle. This means that it is a lunation later than Jewish Passover in two years out of nineteen, years 8 and 19 of the Christian cycle. Furthermore, because the Julian calendar's lunar age is now about four to five days behind the mean lunations, Julian Easter always follows the start of Passover. This cumulative effect of the errors in the Julian calendar's solar year and lunar age has led to the often-repeated, but false, belief that the Julian cycle includes an explicit rule requiring Easter always to follow Jewish Passover.[75][76] The supposed "after Passover" rule is called the Zonaras proviso, after Joannes Zonaras, the Byzantine canon lawyer who may have been the first to formulate it.[77][78]

Reform of the date

The congregation lighting their candles from the new flame, just as the priest has retrieved it from the altar—note that the picture is flash-illuminated; all electric lighting is off, and only the oil lamps in front of the Iconostasis remain lit. (St. George Greek Orthodox Church, Adelaide)
An Orthodox congress of Eastern Orthodox bishops met in Istanbul in 1923 under the presidency of Patriarch Meletios IV, where the bishops agreed to the Revised Julian calendar. This congress did not have representatives from the remaining Orthodox members of the original Pentarchy (the Patriarchates of Jerusalem, Antioch, and Alexandria) or from the largest Orthodox church, the Russian Orthodox Church, then under persecution from the Bolsheviks, but only effective representation from the Patriarch of Constantinople and the Patriarch of Serbia.[79] The original form of this calendar would have determined Easter using precise astronomical calculations based on the meridian of Jerusalem.[80][81] However, all the Eastern Orthodox countries that subsequently adopted the Revised Julian calendar adopted only that part of the revised calendar that applied to festivals falling on fixed dates in the Julian calendar. The revised Easter computation that had been part of the original 1923 agreement was never permanently implemented in any Orthodox diocese.[citation needed]
At a summit in Aleppo, Syria, in 1997, the World Council of Churches (WCC) proposed a reform in the calculation of Easter which would have replaced the present divergent practices of calculating Easter with modern scientific knowledge taking into account actual astronomical instances of the spring equinox and full moon based on the meridian of Jerusalem, while also following the Council of Nicea position of Easter being on the Sunday following the full moon.[82] The WCC presented comparative data of the relationships:

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