Easter, also called Pascha or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in the New Testament as having occurred on the third day of his burial following his crucifixion by the Romans at Calvary c. 30 AD. It is the culmination of the Passion of Jesus Christ, preceded by Lent, a 40-day period of fasting, prayer, and penance.
The Hebrew calendar, also called the Jewish calendar, is a lunisolar calendar used today for Jewish religious observance and as an official calendar of Israel. It determines the dates of Jewish holidays and other rituals, such as yahrzeits and the schedule of public Torah readings. In Israel, it is used for religious purposes, provides a time frame for agriculture, and is an official calendar for civil holidays alongside the Gregorian calendar.
A moveable feast is an observance in a Christian liturgical calendar which occurs on different dates in different years.
Passover, also called Pesach, is a major Jewish holiday, one of the three pilgrimage festivals, that celebrates the Biblical story of the Israelites' escape from slavery in Egypt. Pesach starts on the 15th day of the Hebrew month of Nisan which is considered the first month of the Hebrew year. The Hebrew calendar is adjusted to align with the solar calendar in such a way that 15 Nisan always coincides with Sunday, Tuesday, Thursday, or Saturday. The Hebrew day starts and ends at sunset, so the holiday starts at sunset the day before. For example, in 2023, 15 Nisan coincides with Thursday April 6. Therefore, Pesach starts at sundown Wednesday April 5. The word Pesach or Passover can also refer to the Korban Pesach, the paschal lamb that was offered when the Temple in Jerusalem stood; to the Passover Seder, the ritual meal on Passover night; or to the Feast of Unleavened Bread. One of the biblically ordained Three Pilgrimage Festivals, Passover is celebrated for seven days in Israel and for eight days among the Jewish diaspora, based on the concept of yom tov sheni shel galuyot. In the Bible, the seven-day holiday is known as Chag HaMatzot, the feast of unleavened bread (matzah).
Nisan in the Babylonian and Hebrew calendars is the month of the barley ripening and first month of spring. The name of the month is an Akkadian language borrowing, although it ultimately originates in Sumerian nisag "first fruits". In the Hebrew calendar it is the first month of the ecclesiastical year, called the "first of the months of the year", "first month", and the month of Aviv בְּחֹ֖דֶשׁ הָאָבִֽיב ḥōḏeš hā-’āḇîḇ). It is called Nisan in the Book of Esther in the Tanakh and later in the Talmud, which calls it the "New Year", Rosh HaShana, for kings and pilgrimages. It is a month of 30 days. In the year 2024, 1 Nisan will occur on 9 April. Counting from 1 Tishrei, the civil new year, it would be the seventh month, but in contemporary Jewish culture, both months are viewed as the first and seventh simultaneously, and are referred to as one or the other depending on the specific religious aspects being discussed.
The liturgical year, also called the church year, Christian year or kalendar, consists of the cycle of liturgical seasons in Christian churches that determines when feast days, including celebrations of saints, are to be observed, and which portions of Scripture are to be read either in an annual cycle or in a cycle of several years.
Dionysius Exiguus was a 6th-century Eastern Roman monk born in Scythia Minor. He was a member of a community of Scythian monks concentrated in Tomis, the major city of Scythia Minor. Dionysius is best known as the inventor of Anno Domini (AD) dating, which is used to number the years of both the Gregorian calendar and the (Christianised) Julian calendar. Almost all churches adopted his computus for the dates of Easter.
As a moveable feast, the date of Easter is determined in each year through a calculation known as computus. Easter is celebrated on the first Sunday after the Paschal full moon, which is the first full moon on or after 21 March. Determining this date in advance requires a correlation between the lunar months and the solar year, while also accounting for the month, date, and weekday of the Julian or Gregorian calendar. The complexity of the algorithm arises because of the desire to associate the date of Easter with the date of the Jewish feast of Passover which, Christians believe, is when Jesus was crucified.
The Swedish calendar or Swedish style was a calendar in use in Sweden and its possessions from 1 March 1700 until 30 February 1712. It was one day ahead of the Julian calendar and ten days behind the Gregorian calendar. Easter was calculated astronomically, with a minor exception, from 1740 to 1844.
Melito of Sardis was the bishop of Sardis near Smyrna in western Anatolia, and a great authority in early Christianity. Melito held a foremost place in terms of bishops in Asia due to his personal influence and his literary works, most of which have been lost. What has been recovered, however, has provided a great insight into Christianity during the second century. Jerome, speaking of the Old Testament canon established by Melito, quotes Tertullian to the effect that he was esteemed as a prophet by many of the faithful. This work by Tertullian has been lost but Jerome quotes pieces regarding Melito for the high regard in which he was held at that time. Melito is remembered for his work on developing the first Old Testament Canon. Though it cannot be determined what date he was elevated to an episcopacy, it is probable that he was bishop during the arising controversy at Laodicea in regard to the observance of Easter, which resulted in him writing his most famous work, an Apology for Christianity to Marcus Aurelius. Little is known of his life outside what works are quoted or read by Clement of Alexandria, Origen, and Eusebius. A letter of Polycrates of Ephesus to Pope Victor about 194 states that "Melito the eunuch [this is interpreted "the virgin" by Rufinus in his translation of Eusebius], whose whole walk was in the Holy Spirit", was buried at Sardis. His feast day is celebrated on April 1.
Hillel II, also known simply as Hillel, was an amora of the fifth generation in the Land of Israel. He held the office of Nasi of the Sanhedrin between 320 and 385 CE. He was the son and successor of Judah III. He is sometimes confused with Hillel the Elder, as the Talmud sometimes simply uses the name "Hillel".
Quartodecimanism is the name given to the practice of celebrating the death of Christ on the day of Passover on the 14th of Nisan according to the biblical dating, being on whatever day of the week. The Quartodeciman controversy in the Church was over the question of celebrating Easter on the first day of the week, Sunday, or Passover at the same time as the sacrifice of the Passover lamb.
A chronology of Jesus aims to establish a timeline for the events of the life of Jesus. Scholars have correlated Jewish and Greco-Roman documents and astronomical calendars with the New Testament accounts to estimate dates for the major events in Jesus's life.
A golden number is a number assigned to each year in sequence which is used to indicate the dates of all the calendric new moons for each year in a 19-year Metonic cycle. They are used in computus and also in Runic calendars. The golden number of any Julian or Gregorian calendar year can be calculated by dividing the year by 19, taking the remainder, and adding 1.
Anno Mundi, abbreviated as AM or A.M., or Year After Creation, is a calendar era based on the biblical accounts of the creation of the world and subsequent history. Two such calendar eras have seen notable use historically:
Christian observance of Passover is found among Assemblies of Yahweh, Messianic Jews, and some congregations of the Church of God. It is often linked to the Christian holiday and festival of Easter. Often, only an abbreviated seder is celebrated to explain the meaning in a time-limited ceremony. The redemption from the bondage of sin through the sacrifice of Christ is celebrated, a parallel of the Jewish Passover's celebration of redemption from bondage in the land of Egypt.
The controversy over the correct date for Easter began in Early Christianity as early as the 2nd century AD. Discussion and disagreement over the best method of computing the date of Easter Sunday has been ongoing ever since and remains unresolved. Different Christian denominations continue to celebrate Easter on different dates, with Eastern and Western Christian churches being a notable example.
An ecclesiastical full moon is formally the 14th day of the ecclesiastical lunar month in an ecclesiastical lunar calendar. The ecclesiastical lunar calendar spans the year with lunar months of 30 and 29 days which are intended to approximate the observed phases of the Moon. Since a true synodic month has a length that can vary from about 29.27 to 29.83 days, the moment of astronomical opposition tends to be roughly 14.75 days after the previous conjunction of the Sun and Moon. The ecclesiastical full moons of the Gregorian lunar calendar tend to agree with the dates of astronomical opposition, referred to a day beginning at midnight at 0 degrees longitude, to within a day or so. However, the astronomical opposition happens at a single moment for the entire Earth: The hour and day at which the opposition is measured as having taken place will vary with longitude. In the ecclesiastical calendar, the 14th day of the lunar month, reckoned in local time, is considered the day of the full moon at each longitude.
Peri Pascha is a 2nd-century homily of Melito of Sardis written between A.D.160 and 170 in Asia Minor. It was discovered last century and first published in 1940. It describes Christian doctrine on the Paschal mystery in the style of Second Sophistic period. It was originally conjectured to have probably been recited with the kind of cantillation customary in scripture reading. Its first editor, Campbell Bonner, entitled it mistakenly On the Passion. It was corrected to On the Pascha, thanks to the title found in the Papyrus Bodmer XIII, one of the Bodmer Papyri.
When Constantine the Great came to power in 306, he worked to stop the persecution of Christians in the Roman Empire. However, this led to a large split in the treatment of Christians and Jews.
