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A leap year is a calendar year that contains an additional day compared to a common year. The 366th day is added to keep the calendar year synchronised with the astronomical year or seasonal year. Since astronomical events and seasons do not repeat in a whole number of days, calendars having a constant number of days each year will unavoidably drift over time with respect to the event that the year is supposed to track, such as seasons. By inserting ("intercalating") an additional day—a leap day—or month—a leap month—into some years, the drift between a civilization's dating system and the physical properties of the Solar System can be corrected.
The Revised Julian calendar, or less formally the new calendar and also known as the Milanković calendar, is a calendar proposed in 1923 by the Serbian scientist Milutin Milanković as a more accurate alternative to both Julian and Gregorian calendars. At the time, the Julian calendar was still in use by all of the Eastern Orthodox Churches and affiliated nations, while the Catholic and Protestant nations were using the Gregorian calendar. Thus, Milanković's aim was to discontinue the divergence between the naming of dates in Eastern and Western churches and nations. It was intended to replace the Julian calendar in Eastern Orthodox Churches and nations. From 1 March 1600 through 28 February 2800, the Revised Julian calendar aligns its dates with the Gregorian calendar, which had been proclaimed in 1582 by Pope Gregory XIII.
Pentecost is a Christian holiday which takes place on the 50th day after Easter Sunday. It commemorates the descent of the Holy Spirit upon the Virgin Mary and the Apostles of Jesus Christ while they were in Jerusalem celebrating the Feast of Weeks, as described in the Acts of the Apostles.
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.
In British and Irish tradition, the quarter days were the four dates in each year on which servants were hired, school terms started, and rents were due. They fell on four religious festivals roughly three months apart and close to the two solstices and two equinoxes.
In the Western liturgical year, Lady Day is the traditional name in some English-speaking countries of the Feast of the Annunciation, which is celebrated on 25 March, and commemorates the visit of the archangel Gabriel to the Virgin Mary, during which he informed her that she would be the mother of Jesus Christ, the Son of God.
Michaelmas is a Christian festival observed in many Western Christian liturgical calendars on 29 September, and on 8 November in the Eastern Christian traditions. Michaelmas has been one of the four quarter days of the English and Irish financial, judicial, and academic year.
Whitsunday, also known as Whitsun, is the celebration in England of the Christian feast of Pentecost, observed 7 weeks after Easter.
Little Christmas, also known as Old Christmas, Green Christmas, or Twelfth Night, is one of the traditional names among Irish Christians and Amish Christians for 6 January, which is also known more widely as the Feast of the Epiphany, celebrated after the conclusion of the twelve days of Christmastide. It is the traditional end of the Christmas season and until 2013 was the last day of the Christmas holidays for both primary and secondary schools in Ireland.
Ember days are quarterly periods of prayer and fasting in the liturgical calendar of Western Christian churches. These fasts traditionally take place on the Wednesday, Friday, and Saturday of the weeks following St Lucy's Day, the first Sunday in Lent, Pentecost (Whitsun), and Holy Cross Day, though some areas follow a different pattern. The Catholic Church ended its practice of fasting on these days in 1966, and the Anglican Communion made fasting optional in 1976. Ordination ceremonies are often held on Ember Saturdays or the following Sunday.
An academic term is a portion of an academic year during which an educational institution holds classes. The schedules adopted vary widely. Specific synonyms are commonly used to denote the duration or a term. In most countries, the academic year begins in late summer or early autumn and ends during the following spring or summer.
Old Style (O.S.) and New Style (N.S.) indicate dating systems before and after a calendar change, respectively. Usually, this is the change from the Julian calendar to the Gregorian calendar as enacted in various European countries between 1582 and 1923.
The Eastern Orthodox liturgical calendar describes and dictates the rhythm of the life of the Eastern Orthodox Church. Passages of Holy Scripture, saints and events for commemoration are associated with each date, as are many times special rules for fasting or feasting that correspond to the day of the week or time of year in relationship to the major feast days.
Hilary term is the second academic term of the University of Oxford and Trinity College Dublin. It runs from January to March and is so named because the feast day of St Hilary of Poitiers, 14 January, falls near the beginning of this term. All terms are dated from this day in the following way:
The Calendar Act 1750, also known as Chesterfield's Act or the British Calendar Act of 1751, is an Act of the Parliament of Great Britain. Its purpose was for Great Britain and the British Empire to adopt the Gregorian calendar. The Act also rectified other dating anomalies, such as changing the start of the legal year from 25 March to 1 January.
Dual dating is the practice, in historical materials, of indicating a date with what appear to be duplicate or excessive digits: these may be separated by a hyphen or a slash, or placed one above the other. The need for dual dating arose from the transition from an older calendar to a newer one. Another method used is to give the date of an event according to one calendar, followed in parentheses by the date of the same event in the other calendar, appending an indicator to each to specify which reference calendar applies.
The following are 11 public holidays in Ukraine.
The Term and Quarter Days (Scotland) Act 1990 is an Act of the Parliament of the United Kingdom which defined the dates of the Scottish Term and Quarter Days. These are customary divisions of the legal year when contracts traditionally begin and end and payments are due. It received royal assent on 13 July 1990 and immediate commencement, with the dates of the days changing twelve months later. The changes arose from a Scottish Law Commission Report on the Scottish Term and Quarter Days.
Alexander Philip was a Scottish solicitor and campaigner for calendar reform. He was elected a Fellow of the Royal Society of Edinburgh in 1913
References
- ↑ Folklore Myths and Legends of Britain (2 ed.). Great Britain: Reader's Digest Association Ltd. 1977. p. 23. ISBN 9780276000393.
- ↑ Vyst, R. K. The Calendar and Related Problems Archived 2010-01-19 at the Wayback Machine from the Scottish Records Association website. Retrieved 2008-05-23.
- ↑ "Sittings of the Court of Session for the Legal Years 2012/2013, 2013/2014 and 2014/2015" (PDF). Court of Session. 8 August 2011. Retrieved 3 January 2012.
- ↑ "Particle Physics Experiment Seminar Series". University of Glasgow . Retrieved 3 January 2012.
- ↑ "Semester dates". University of St Andrews . Retrieved 3 January 2012.