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Jun-01-08-Pg 08-09-Ror.Indd January 08, 2012 Junior Observer Junior Observer 09 08 Ancient and modern Pope Gregory XIII Gregorian calendar The Gregorian calendar A Gregorian year is divided is the calendar that is used into twelve “months”. calendars nearly everywhere in the Despite the name these are world. A modification of the not synchronised with the Julian calendar, it was first phases of the Moon; the termi- proposed by the Calabrian nology derives from the Julius Caesar changed the Roman doctor Aloysius Lilius, and Roman calendar that preced- year to his own Julian was decreed by Pope ed the Julian calendar. The calendar Gregory XIII, for whom it twelve months are of irregular was named, on February 24 lengths. Fast facts 1582 via the papal bull A calendar date is fully Inter gravissimas. Its years specified by the year (num- *Length of the tropical his calendar with the solar are numbered per the per- bered by some scheme beyond year, defined as the average year ceived birth year of Jesus the scope of the calendar interval between vernal equi- * During 1582-1584 most Christ, which is labeled the itself), the month (identified noxes is 365 days, 5 hours, 49 Catholic countries accepted “Anno Domini” era. by name or number), and the minutes (365.2424 Universal the Gregorian calendar. This era was created in day of the month (numbered days).. This calendar year * Protestant Germany the 6th century by Roman sequentially starting at 1).The was the objective of the accepted the Gregorian monk Dionysius Exiguus. leap years are all years divisi- Gregorian calendar reform, calendar,partially in 1700 The Gregorian Calendar ble by 4, with the exception which finalised the calendar and fully in 1773. was devised both because that those divisible by 100, as we use it today. * In 1752 Great Britain the mean year in the Julian but not by 400, are common * Lengthening of the vernal (and the American colonies) Calendar was slightly too years. These 366-day years equinox year over the last two accepted the Gregorian cal- long, causing the vernal add a 29th day to February, millennia is about 10 seconds endar. entry from Pisces to Aries. Meena to of the movement of sun, moon and equinox to slowly drift which normally has 28 days. (0.0001 universal days per * Eleven days were elimi- Mesha rashi - to start another cycle. stars. They were aware of the days get- backwards in the calendar The intercalary day in a leap year).Variation of this length nated by the British long summer vacation. In America they You may have heard of the ‘Saka The exact time of the Sun’s entry into ting shorter and the nights longer, and year, and because the lunar year is known as a leap day. in the next few millennia is Parliament to realign the say schools start “in the fall,” which Varsha’. Saka also known as Sali Mesha rashi is calculated by astrolo- then gradually daylight continuing for calendar used to compute Since Roman times 24 less than 5 seconds old Julian calendar with the means in the autumn when the leaves Vaahana was a king who ruled in north- gers, and the public informed, 13/14 is longer hours. As long ago as 2000 BC, the date of Easter had February (bissextile) was * The earliest known date Gregorian calendar. fall. west India, now Pakistan. He must then our New Year’s Day. It is also New the Sumerians in Mesopotamia calcu- grown conspicuously in counted as the leap day, but of the founding of the * In 1873 Japan accepted In Australia, New Zealand and other have introduced a new calendar, just as Year’s Day in the Buddhist countries of lated the new year by the new moon Egyptian calendar is 4236 the Gregorian calendar. countries south of the Tropic of Julius Ceasar did. S.E. Asia. People in Myanmar, nearest to the equinox. B.C.E. * In 1917 (and again in Capricorn, the school year begins in The Saka era began in 78 AD. So this Thailand, Cambodia, Laos, Vietnam, all They would have noted the nights * Early Greek year was 354 1940) Russia accepted the late February or early March, after the year will be Saka Varsha 1934. The celebrate the dawn of a new year on this getting shorter and the days longer, day days, with days added,Jewish Gregorian calendar. This is also the beginning of a new summer vacation. It is midsummer Saka Varsha is counted from the day the day as do the Buddhists in Bangladesh. by day. The plants were beginning to Year was 354 days, with days * China accepted the anuary 1st is the first day of a new school year. But International Schools now in the southern hemisphere, south Sun begins a new cycle of the Zodiac The Chinese, wherever they are will put out tender shoots, animals waking added and early Roman year Gregorian calendar system year. The first day of the 12th year start their new school year or academic of the Tropic of Capricorn. which is on April 13/14 in the Gregorian be celebrating the new year. Sometime up from their winter sleep and wild 304 days, amended in 700 in 1949. Jin the 21st century. The year is year in September. Why so late in the As I said earlier, this year is 2012 AD. duck and other birds flying back to C.E. to 355 days. * 1 hour and 20 minutes 2012 AD. What do the two letters AD year? To be in line with the schools in You would have noticed that some years their homeland. Then came a day when * The year according to is the length of time the stand for? They stand for two Latin England and America, because they fol- have the letters BC after them. Julius hours of daylight and darkness were Julius Caesar was 365 days. Gregorian calendar has words Anno Domini which means ‘in low the same course of studies as those Caesar introduced a calendar in 46 BC. equal or almost equal. Also known as The Julian become misaligned with the the year of the Lord.’ This is the schools in England and America. Your history books give the year that That day was the beginning of a new calendar. vernal equinox over the 2012th year since the birth of Jesus In those temparate lands - countries the Buddha passed away as 544 BC and year; and that day may have been the * On January 1, 45 B.C.E years since Gregory’s reform Christ. north of the Tropic of Cancer - the that Mahinda Thera came to Lanka in nearest if not the day of the equinox, Caesar changed the Roman in 1582. The calendar which is now used school year starts in autumn after the 234 BC. when the Sun is directly overhead the year to his own Julian calen- * By 4th or 5th millenni- worldwide is called the Gregorian BC stands for Before Christ. Jesus equator, which is March 21 in the dar. um C.E. the Gregorian cal- Calendar, because it was intro- Christ was born 46 years after the Gregorian calendar. error as well. The Gregorian nowadays February 29 is * On October 15, 1582, the endar will become twelve duced by Pope Gregory XIII in Julian Calendar was introduced. The In the ancient Roman calendar fol- solar calendar is an arith- regarded as the leap day in Gregorian calendar replaced calendar hours ahead of the the 16th century. What was Buddha passed away 544 years before lowed for centuries before the birth of metical calendar. It counts most countries. This year is a the Julian calendar, in use astronomer’s mean tropical in use earlier was the cal- the birth of Jesus Christ - 2012 plus 544 Christ, March was the first month of days as the basic unit of leap year. since 45 BC. year.Beyond the 7th millen- endar introduced in is 2556; this number of years will be the year, and the year had only 10 time, grouping them into Although the calendar year nium C.E. the Gregorian 46BC by Julius Caesar, completed on Vesak Day this year, months, until the calendar was revised years of 365 or 366 days. runs from January 1 to * Length of time the Julian calendar will become twelve the emperor of Rome. which is the anniversary of the calendar. between mid January and mid February. by Julius Ceasar in 46BC and two The calendar repeats com- December 31, sometimes year calendar overestimates our cal- calendar hours ahead of the The Julian calendar Parinirvana. There are calendars other than that The Muslim year doesn’t start on a months added on the suggestion of the pletely every 146,097 days, numbers are based on a differ- endar year per year, as deter- mean vernal-equinox year* was found to be not The Christian era is calculated now used world-wide, followed by dif- fixed date as the months in the year are Egyptian astronomer Alexander the cycle consisting of 400 ent starting point within the mined by Pope Gregory was 10 In 1972 the Atomic Time quite accurate; so, it from the birth of Jesus Christ, but ferent people for religious purposes or lunar months. Sosigenes. So March became the third years, of which 303, the “com- calendar. Confusingly, the minutes 48 seconds . replaced Earth Time as the was corrected by the the Buddhist era from the day the other traditional ceremonies. In these A lunar month is a period from one month. In Iran today, the New Year is mon years”, have 365 days, term “Anno Domini” is not October 5-14, 1582 Dates world’s official scientific Jesuit astronomer Buddha passed away.
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