Ab urbe condita
Ab urbe condita, or Anno urbis conditæ abbreviated as AUC in either case, is a convention, used in antiquity and by classical historians to refer to a given year in Ancient Rome. Ab urbe condita means "from the founding of the City," while anno urbis conditæ means "in the year since the City's founding." Therefore, the traditional year of the foundation of Rome, 753 BC, would be written AUC 1, while AD 1 would be AUC 754. The foundation of the Empire in 27 BC would be AUC 727. Usage of the term was more common during the Renaissance, when editors sometimes added AUC to Roman manuscripts they published, giving the false impression that the convention was used in antiquity. In reality, the dominant method of identifying years in Roman times was to name the two consuls who held office that year. In late antiquity, regnal years were in use, as was the Diocletian era in Roman Egypt after AD 293, in the Byzantine Empire after AD 537, following a decree by Justinian; the traditional date for the founding of Rome, 21 April 753 BC, is due to Marcus Terentius Varro.
Varro may have used the consular list and called the year of the first consuls "ab urbe condita 245," accepting the 244-year interval from Dionysius of Halicarnassus for the kings after the foundation of Rome. The correctness of this calculation has not been confirmed. From the time of Claudius onward, this calculation superseded other contemporary calculations. Celebrating the anniversary of the city became part of imperial propaganda. Claudius was the first to hold magnificent celebrations in honor of the anniversary of the city, in AD 48, the eight hundredth year from the founding of the city. Hadrian and Antoninus Pius held similar celebrations, in AD 121, in AD 147 and AD 148, respectively. In AD 248, Philip the Arab celebrated Rome's first millennium, together with Ludi saeculares for Rome's alleged tenth sæculum. Coins from his reign commemorate the celebrations. A coin by a contender for the imperial throne, explicitly states "ear one thousand and first", an indication that the citizens of the empire had a sense of the beginning of a new era, a Sæculum Novum.
The Anno Domini year numbering was developed by a monk named Dionysius Exiguus in Rome in AD 525, as a result of his work on calculating the date of Easter. Dionysius did not use the AUC convention, but instead based his calculations on the Diocletian era; this convention had been in use since AD 293, the year of the tetrarchy, as it became impractical to use regnal years of the current emperor. In his Easter table, the year AD 532 was equated with the 248th regnal year of Diocletian; the table counted the years starting from the presumed birth of Christ, rather than the accession of the emperor Diocletian on 20 November AD 284, or as stated by Dionysius: "sed magis elegimus ab incarnatione Domini nostri Jesu Christi annorum tempora praenotare". Blackburn and Holford-Strevens review interpretations of Dionysius which place the Incarnation in 2 BC, 1 BC, or AD 1, it has been calculated that the year AD 1 corresponds to AUC 754, based on the epoch of Varro. Thus, AUC 1 = 753 BC AUC 753 = 1 BC AUC 754 = AD 1 AUC 1000 = AD 247 AUC 1229 = AD 476 AUC 2206 = AD 1453 AUC 2753 = AD 2000 AUC 2772 = AD 2019 List of Latin phrases
Edward IV of England
Edward IV was the King of England from 4 March 1461 to 3 October 1470, again from 11 April 1471 until his death. He was the first Yorkist King of England; the first half of his rule was marred by the violence associated with the Wars of the Roses, but he overcame the Lancastrian challenge to the throne at Tewkesbury in 1471 to reign in peace until his sudden death. Before becoming king, he was Duke of Earl of March, Earl of Cambridge and Earl of Ulster. Edward of York was born at Rouen in Normandy, the second son of Richard, 3rd Duke of York, Cecily Neville, he was the eldest of the four sons. He bore the title Earl of March before his accession to the throne. Edward's father Richard, Duke of York, had been heir to King Henry VI until the birth of Henry's son Edward in 1453. Richard carried on a factional struggle with the king's Beaufort relatives, he established a dominant position after his victory at the First Battle of St Albans in 1455, in which his chief rival Edmund Beaufort, Duke of Somerset, was killed.
However, Henry's Queen, Margaret of Anjou, rebuilt a powerful faction to oppose the Yorkists over the following years. In 1459 Margaret moved against the Duke of York and his principal supporters—his brother-in-law Richard Neville, Earl of Salisbury, Salisbury's son Richard Neville, Earl of Warwick, who rose in revolt; the Yorkist leaders fled from England after the collapse of their army in the confrontation at Ludford Bridge. The Duke of York took refuge in Ireland, while Edward went with the Nevilles to Calais where Warwick was governor. In 1460 Edward landed in Kent with Salisbury and Salisbury's brother William Neville, Lord Fauconberg, raised an army, occupied London. Edward and Fauconberg left Salisbury besieging the Tower of London and advanced against the king, with an army in the Midlands, defeated and captured him in the Battle of Northampton. York returned to England and was declared the king's heir by parliament, but Queen Margaret raised a fresh army against him, he was killed at the Battle of Wakefield on 30 December 1460, along with his second surviving son Edmund, Earl of Rutland, the Earl of Salisbury.
This left Edward, now Duke of York, at the head of the Yorkist faction. He defeated a Lancastrian army at Mortimer's Cross in Herefordshire on 2–3 February 1461, he united his forces with those of Warwick, whom Margaret's army had defeated at the Second Battle of St Albans, during which Henry VI had been rescued by his supporters. Edward's father had restricted his ambitions to becoming Henry's heir, but Edward now took the more radical step of proclaiming himself king in March 1461, he advanced against the Lancastrians, having his life saved on the battlefield by the Welsh Knight Sir David Ap Mathew. He defeated the Lancastrian army in the exceptionally bloody Battle of Towton in Yorkshire on 29 March 1461. Edward had broken the military strength of the Lancastrians, he returned to London for his coronation. King Edward IV named Sir David Ap Mathew Standard Bearer of England and allowed him to use "Towton" on the Mathew family crest. Lancastrian resistance continued in the north, but posed no serious threat to the new regime and was extinguished by Warwick's brother John Neville in the Battle of Hexham in 1464.
Henry VI had escaped into the Pennines, where he spent a year in hiding, but was caught and imprisoned in the Tower of London. Queen Margaret fled abroad with many of their leading supporters. Edward IV had deposed Henry VI, but there was little point in killing the ex-king as long as Henry's son remained alive, since this would have transferred the Lancastrian claim from a captive king to one, at liberty. At the age of nineteen, Edward exhibited remarkable military acumen, he had a notable physique and was described as handsome and affable. His height is estimated at 6 feet 4.5 inches, making him the tallest among all English and British monarchs to date. Most of England's leading families had remained loyal to Henry VI or remained uncommitted in the recent conflict; the new regime, relied on the support of the Nevilles, who held vast estates and had been so instrumental in bringing Edward to the throne. However, the king became estranged from their leader the Earl of Warwick, due to his marriage.
Warwick, acting on Edward's behalf, made preliminary arrangements with King Louis XI of France for Edward to marry either Louis' daughter Anne or his sister-in-law Bona of Savoy. He was humiliated and enraged to discover that, while he was negotiating, Edward had secretly married Elizabeth Woodville, the widow of John Grey of Groby, on 1 May 1464. Edward's marriage to Elizabeth Woodville has been criticised as an impulsive action that did not add anything to the security of England or the York dynasty. A horrified Privy Council told him with unusual frankness, when he announced the marriage to them, "that he must know that she was no wife for a prince such as himself, for she was not the daughter of a duke or earl... but a simple knight." Christine Carpenter argues against the idea that it had any political motivation, that Edward's creation of a strong Yorkist nobility meant that he did not need the "lightweight connections" of the Woodvilles, whereas Wilkinson described the marriage as both a "love match, a cold and calculated political move".
J. R. Lander suggested in 1980 that the King was "infatuated," echoing P. M. Kendall's view that he was acting out of lust. Elizabeth's mother was Jacquetta of Luxembourg, wi
The Ethiopian calendar or Eritrean calendar is the principal calendar used in Ethiopia and serves as the liturgical year for Christians in Eritrea and Ethiopia belonging to the Eritrean Orthodox Tewahedo Church, Ethiopian Orthodox Tewahedo Church, Eastern Catholic Churches, the Coptic Orthodox Church of Alexandria, Ethiopian-Eritrean Evangelicalism. It is a solar calendar which in turn derives from the Egyptian calendar, but like the Julian calendar, it adds a leap day every four years without exception, begins the year on August 29 or August 30 in the Julian calendar. A gap of 7–8 years between the Ethiopian and Gregorian calendars results from an alternative calculation in determining the date of the Annunciation. Like the Coptic calendar, the Ethiopic calendar has 12 months of 30 days plus 5 or 6 epagomenal days, which comprise a thirteenth month; the Ethiopian months begin on the same days as those of the Coptic calendar, but their names are in Ge'ez. A 6th epagomenal day is added every 4 years, without exception, on August 29 of the Julian calendar, 6 months before the corresponding Julian leap day.
Thus the first day of the Ethiopian year, 1 Mäskäräm, for years between 1900 and 2099, is September 11. However, it falls on September 12 in years before the Gregorian leap year. Enkutatash is the word for the Ethiopian New Year in Amharic, the official language of Ethiopia, while it is called Ri'se Awde Amet in Ge'ez, the term preferred by the Ethiopian & Eritrean Orthodox Tewahedo Churchs, it occurs on September 11th in the Gregorian Calendar. The Ethiopian Calendar Year 1998 Amätä Məhrät began on the Gregorian Calendar Year on September 11th, 2005. However, the Ethiopian Years 1992 and 1996 began on the Gregorian Dates of'September 12th 1999' and'2003' respectively; this date correspondence applies for the Gregorian years 1900 to 2099. The Ethiopian leap year is every four without exception, while Gregorian centurial years are only leap years when divisible by 400; as the Gregorian year 2000 is a leap year, the current correspondence lasts two centuries instead. The start of the Ethiopian year falls on August 30th.
This date corresponds to the Old-Style Julian Calendar. This deviation between the Julian and the Gregorian Calendar will increase with the passing of the time. You can observe the real start date in the future centuries in a Gregorian to Ethiopian Date Converter. To indicate the year and followers of the Eritrean churches today use the Incarnation Era, which dates from the Annunciation or Incarnation of Jesus on March 25, AD 9, as calculated by Annianus of Alexandria c. 400. Meanwhile, Europeans adopted the calculations made by Dionysius Exiguus in AD 525 instead, which placed the Annunciation 8 years earlier than had Annianus; this causes the Ethiopian year number to be 8 years less than the Gregorian year number from January 1 until September 10 or 11 7 years less for the remainder of the Gregorian year. In the past, a number of other eras for numbering years were widely used in Ethiopia and the Kingdom of Aksum; the most important era – once used by the Eastern Christianity, still used by the Coptic Orthodox Church of Alexandria – was the Era of Martyrs known as the Diocletian Era, or the era of Diocletian and the Martyrs, whose first year began on August 29, 284.
Respective to the Gregorian and Julian New Year's Days, 31⁄2 to 4 months the difference between the Era of Martyrs and the Anni Domini is 285 years. This is because in AD 525, Dionysius Exiguus decided to add 15 Metonic cycles to the existing 13 Metonic cycles of the Diocletian Era to obtain an entire 532 year medieval Easter cycle, whose first cycle ended with the year Era of Martyrs 247 equal to year DXXXI, it is because 532 is the product of the Metonic cycle of 19 years and the solar cycle of 28 years. Around AD 400, an Alexandrine monk called Panodoros fixed the Alexandrian Era, the date of creation, on 29 August 5493 BC. After the 6th century AD, the era was used by Ethiopian chronologists; the twelfth 532 year-cycle of this era began on 29 August AD 360, so 4×19 years after the Era of Martyrs. Bishop Anianos preferred the Annunciation style as 25 March, thus he shifted the Panodoros era by about six months, to begin on 25 March 5492 BC. In the Ethiopian calendar this was equivalent to 15 Magabit 5501 B.
C.. The Anno Mundi era remained in usage until the late 19th century; the 4 year leap-year cycle is associated with the four Evangelists: the first year after an Ethiopian leap year is named the John-year, followed by the Matthew-year, the Mark-year. The year with the 6th epagomenal day is traditionally designated as the Luke-year. There are no exceptions to the 4 year leap-year cycle, like the Julian calendar but unlike the Gregorian calendar; these dates are valid only from March 1900 to February 2100. This is because 1900 and 2100 are not leap years in the Gregorian calendar, while they are still leap year
As a means of recording the passage of time, the 14th century was a century lasting from January 1, 1301, to December 31, 1400. During this period and natural disasters ravaged both Europe and the four khanates of the Mongol Empire; the Mongol court was driven out of China and retreated to Mongolia, the Ilkhanate collapsed in Persia, the Chaghatayid dissolved and broke into two parts, the Golden Horde lost its position as a great power in Eastern Europe. In Europe, the Black Death claimed between 75 and 200 million lives – wiping out over 60 percent of European society – while England and France fought in the protracted Hundred Years' War after the death of Charles IV, King of France led to a claim to the French throne by Edward III, King of England; this period is considered the height of chivalry and marks the beginning of strong separate identities for both England and France. The transition from the Medieval Warm Period to the Little Ice Age. Beginning of the Ottoman Empire, early expansion into the Balkans.
Early 14th century: Attributed to Kao Ninga Monk Sewing is made. Kamakura period, it is now kept at The Cleveland Museum of Art. An account of Buddha's life, translated earlier into Greek by Saint John of Damascus and circulated to Christians as the story of Barlaam and Josaphat, became so popular that the two were venerated as saints. Singapore emerges for the first time as a fortified trading centre of some importance. Islam reaches Terengganu, on the Malay Peninsula; the Hausa found several city-states in the south of modern Niger. The poet Petrarch coins the term Dark Ages to describe the preceding 900 years in Europe, beginning with the fall of the Western Roman Empire in 476 through to the renewal embodied in the Renaissance. Iwan vault, Jamé Mosque of Isfahan, Persia, is built. Work begins on the Great Enclosure at Great Zimbabwe, built of dressed stone; the city's population is now between 10,000 and 40,000. 1309 — King Jayanegara succeeds Kertarajasa Jayawardhana as ruler of Majapahit. 1309-1377 — The Avignon papacy transfers the seat of the Popes from Italy to France The Great Famine of 1315-1317 kills millions of people in Europe.
1318-1330 — An Italian Franciscan friar, Mattiussi visited Sumatra and Banjarmasin in Borneo. In his record he described the kingdom of Majapahit. 1320 — Władysław I the Elbow-high is crowned King of Poland which leads to its unification 1323 — Malietoafaiga ordered cannibalism to be abolished in Tutuila, now known as American Samoa. 1325 — Forced out of previous locations, the Mexica found the city of Tenochtitlan 1328 — Tribhuwana Wijayatunggadewi succeeds Jayanegara as ruler of Majapahit. Beginning of the Renaissance in Italy 1335 — The death of the Ilkhan Abu Said, causes the disintegration of the Mongol rule in Persia. 1336 — The Vijayanagara Empire is founded in South India by Harihara 1337 — The Hundred Years' War begins when Edward III of England lays claim to the French throne. 1345–1346 — The French recruit troops and ships in Genoa and Nice. 1346 — English forces led by Edward III defeat a French army led by Philip VI in The Battle of Crécy, a major point in the Hundred Years' War which marks the rise of the longbow as a dominant weapon in Western Europe.
1347–1351 — The Black Death kills around a third of the population of Europe. 1347 — Adityawarman moved the capital of Dharmasraya and established the kingdom of Malayupura in Pagarruyung, West Sumatra. 1350 — Hayam Wuruk, styled Sri Rajasanagara, succeeds Tribhuwana Wijayatunggadewi as ruler of Majapahit. Under its military commander Gajah Mada, Majapahit stretches over much of modern-day Indonesia. 1356 — The Imperial Diet of the Holy Roman Empire headed by Emperor Charles IV issues the Golden Bull of 1356, establishing various constitutional aspects of the Empire, the most significant being the electoral college to elect future emperors. 1356 — The Diet of the Hansa is held in Lübeck, formalising what up until had only been a loose alliance of trading cities in northern Europe and founding the Hanseatic League. 1357 — Scotland retains its independence with the signing of the Treaty of Berwick, thus ending the Wars of Scottish Independence. 1357 — In the Battle of Bubat, the Sundanese royal family is massacred by the Majapahit army by the order of Gajah Mada.
1363 — The Battle of Lake Poyang, a naval conflict between Chinese rebel groups led by Chen Youliang and Zhu Yuanzhang, takes place from August to October, constituting one of the largest naval battles in history. 1365 — The Old Javanese text Nagarakertagama is written. 1366 — Tepanec Tlatoani Acolnahuácatl accepts Acamapichtli as the first tlatoani of Tenochtitlan for the Mexica Empire. 1368 — The end of the Mongol Yuan Dynasty in China and the beginning of the Ming Dynasty. 1377 — Majapahit sends a punitive expedition against Palembang in Sumatra. Palembang's prince, Parameswara flees finding his way to Malacca and establishing it as a major international port. 1378 — The Great Schism of the West begins leading to 3 simultaneous popes. 1378-1382 — Ciompi Revolt occurs in Florence 1381 — John Wycliffe is dismissed from the University of Oxford for criticism of the Roman Catholic Church thus, the Lollardy movement rises in England. 1381 — Peasants' Revolt in England. 1385 — Battle of Aljubarrota between Portugal and Castile.
Portugal maintains independence. 1385 — Union of Krewo between Poland and Lithuania. 1389 — Battle of Kosovo between Serbs and Ottoman Turks, Prince Lazar, sultan Murat I and Miloš Obilić were killed. 1389 — Wikramawardhana succeeds Sri Rajasanagara as ruler of Majapahit. 1392 — Taejo
Vikram Samvat. It uses solar sidereal years; the Vikram Samvat is notable because many medieval era inscriptions use it. It is said to be named after the legendary king Vikramaditya, but the term "Vikrama Samvat" does not appear in the historical records before the 9th century, rather the same calendaring system is found by other names such as Krita and Malava. In the colonial era scholarship, the era was believed to be based on the commemoration of King Vikramaditya expelling the Sakas from Ujjain; however epigraphical evidence and scholarship suggest that this theory has no historical basis and likely was an error. Starting in the 9th century and thereafter, epigraphical artwork uses Vikrama-Samvat, suggesting that sometime around the 9th-century, the Hindu calendar era, in use became popular as Vikram Samvat, while Buddhist and Jain epigraphy continued to use an era based on the Buddha or the Mahavira. According to popular tradition, the legendary king Vikramaditya of Ujjain established the Vikrama Samvat era after defeating the Śakas.
Kalakacharya Kathanaka by the Jain sage Mahesarasuri gives the following account: Gandharvasena, the then-powerful king of Ujjain, abducted a nun called Sarasvati, the sister of the monk. The enraged monk sought the help of the Śaka ruler King Sahi in Sistan. Despite heavy odds but aided by miracles, the Śaka king defeated Gandharvasena and made him a captive. Sarasvati was repatriated; the defeated king retired to the forest. His son, being brought up in the forest, had to rule from Pratishthana. On, Vikramaditya invaded Ujjain and drove away from the Śakas. To commemorate this event, he started a new era called the "Vikrama era"; the Ujjain calendar started around 58–56 BCE, the subsequent Shaka era calendar was started in 78 CE at Pratishthana. The association of the era beginning in 57 BCE with Vikramaditya is not found in any source before the 9th century CE; the earlier sources call this era by various names, including Kṛṭa, the era of the Malava tribe, or Samvat. The earliest known inscription that calls the era "Vikrama" is from 842 CE.
This inscription of Chauhana ruler Chandamahasena was found at Dholpur, is dated Vikrama Samvat 898, Vaishakha Shukla 2, Chanda. The earliest known inscription that associates this era with a king called Vikramaditya is dated 971 CE; the earliest literary work that connects the era to Vikramaditya is Subhashita-Ratna-Sandoha by the Jain author Amitagati. For this reason, multiple authors believe that the Vikram Samvat was not started by Vikramaditya, who might be a purely legendary king or the title adopted by a king who renamed the era after himself. V. A. Smith and D. R. Bhandarkar believed that Chandragupta II adopted the title Vikramaditya, changed the name of the era to "Vikrama Samvat". According to Rudolf Hoernlé, the king responsible for this change was Yashodharman: Hoernlé believed that he conquered Kashmir, is the same person as the "Harsha Vikramaditya" mentioned in Kalhana's Rajatarangini. Earlier, some scholars believed that the Vikrama Samavat corresponded to the Azes era of the Indo-Scythian king King Azes.
However, this was disputed by Robert Bracey following the discovery of an inscription of Vijayamitra, dated in two eras. The theory seems to be now discredited by Falk and Bennett, who place the inception of the Azes era in 47–46 BCE; the traditional New Year of Vikram Samvat is one of the many festivals of Nepal, marked by parties, family gatherings, the exchange of good wishes, participation in rituals to ensure good fortune in the coming year. It occurs in mid-April each year, coincides with the traditional new year in Assam, Burma, Kerala, Manipur, Punjab, Sri Lanka, Tamil Nadu and Thailand. In addition to Nepal, the Vikram Samvat calendar is recognized in North and East India, in Gujarat among Hindus. Hindu religious festivals are based on a Luni-Solar calendar, not Solar calendar, based on Vikram Samvat. In North India, the new year in Vikram Samvat starts from the first day of Chaitra Skukla paksha. In Buddhist communities, the month of Baishakh is associated with Buddha's Birthday, it commemorates the birth and passing of Gautama Buddha on the first full moon day in May, except in a leap year when the festival is held in June.
Although this festival is not held on the same day as Pahela Baishakh, the holidays fall in the same month of the Bengali and Theravada Buddhist calendars, are related through the spread of Hinduism and Buddhism in the Indian subcontinent. In Gujarat, the day after Diwali is celebrated as the first day of the Vikram Samvat calendar, the first day of the month Kartik; the Vikrami era is an ancient calendar and has been used by Hindus and Sikhs. It is one of the several regional Hindu calendars that have been in use on the Indian subcontinent, it is based on twelve synodical lunar months and 365 solar days; the lunar new year starts on the new moon in the month of Chaitra. This day, known as Chaitra Sukhladi, is a restricted holiday in India; the Vikrami Samvat has been in use in the Indian subcontinent since ancient times, remains in use by the Hindus in north, w
1470s in architecture
1470 – Church and lighthouse tower, Walcheren, completed 1471 – Provand's Lordship, Scotland, built 1472–1474 – The Ordos Wall, first substantial section of the Ming Great Wall of China, built 1475–1479 – Dormition Cathedral, designed by Aristotele Fioravanti, built 1479 – Munich Frauenkirche completed by Jörg von Halsbach 1475: March 6 – Michelangelo, born Michelangelo di Lodovico Buonarroti Simoni in Caprese, Italian sculptor, architect and engineer 1475: September 6 – Sebastiano Serlio born in Bologna, Italian Mannerist architect and theoretician working in France 1472: April 25 – Leon Battista Alberti, Italian architect and polymath 1472? – Michelozzo, Florentine architect and sculptor
Indian national calendar
The Indian national calendar, sometimes called the Shalivahana Shaka calendar. It is used, alongside the Gregorian calendar, by The Gazette of India, in news broadcasts by All India Radio and in calendars and communications issued by the Government of India; the Saka calendar is used in Java and Bali among Indonesian Hindus. Nyepi, the "Day of Silence", is a celebration of the Saka new year in Bali. Nepal's Nepal Sambat evolved from the Saka calendar. Prior to colonization, the Philippines used to apply the Saka calendar as well as suggested by the Laguna Copperplate Inscription; the term may ambiguously refer to the Hindu calendar. The historic Shalivahana era calendar is still used, it has years. The calendar months follow the signs of the tropical zodiac rather than the sidereal zodiac used with the Hindu calendar. Chaitra has 30 days and starts on March 22, except in leap years, when it has 31 days and starts on March 21; the months in the first half of the year all have 31 days, to take into account the slower movement of the sun across the ecliptic at this time.
The names of the months are derived from older, Hindu lunisolar calendars, so variations in spelling exist, there is a possible source of confusion as to what calendar a date belongs to. Years are counted in the Saka era. To determine leap years, add 78 to the Saka year – if the result is a leap year in the Gregorian calendar the Saka year is a leap year as well, its structure is just like the Persian calendar. Senior Indian Astrophysicist Meghnad Saha was the head of the Calendar Reform Committee under the aegis of the Council of Scientific and Industrial Research. Other members of the Committee were: A. C. Banerjee, K. K. Daftari, J. S. Karandikar, Gorakh Prasad, R. V. Vaidya and N. C. Lahiri, it was Saha's effort. The task before the Committee was to prepare an accurate calendar based on scientific study, which could be adopted uniformly throughout India, it was a mammoth task. The Committee had to undertake a detailed study of different calendars prevalent in different parts of the country. There were thirty different calendars.
The task was further complicated by the fact that religion and local sentiments were integral to those calendars. India's first prime minister, Jawaharlal Nehru, in his preface to the Report of the Committee, published in 1955, wrote: “They represent past political divisions in the country.... Now that we have attained Independence, it is desirable that there should be a certain uniformity in the calendar for our civic and other purposes, this should be done on a scientific approach to this problem.” Usage started at 1 Chaitra 1879, Saka Era, or 22 March 1957. Report of the Calendar Reform Committee – online link. Mapping Time: The Calendar and its History by E. G. Richards, 1998, pp. 184–185. Calendars and their History Indian Calendars Positional astronomy in India Indian National Calendar abstract