The Byzantine calendar called "Creation Era of Constantinople" or "Era of the World", was the calendar used by the Eastern Orthodox Church from c. 691 to 1728 in the Ecumenical Patriarchate. It was the official calendar of the Byzantine Empire from 988 to 1453, of Kievan Rus' and Russia from c. 988 to 1700. Since "Byzantine" is a historiographical term, the original name uses the noun "Roman" as it was how the Eastern Roman Empire continued calling itself; the calendar was based on the Julian calendar, except that the year started on 1 September and the year number used an Anno Mundi epoch derived from the Septuagint version of the Bible. It placed the date of creation at 5509 years before the Incarnation, was characterized by a certain tendency, a tradition among Jews and early Christians to number the years from the calculated foundation of the world, its Year One, marking the supposed date of creation, was September 1, 5509 BC, to August 31, 5508 BC. It is not known when; the first appearance of the term is in the treatise of a certain "monk and priest", who mentions all the main variants of the "World Era" in his work.
Georgios argues that the main advantage of the World era is the common starting point of the astronomical lunar and solar cycles, of the cycle of indictions, the usual dating system in Byzantium since the 6th century. He already regards it as the most convenient for the Easter computus. Complex calculations of the 19-year lunar and 28-year solar cycles within this world era allowed scholars to discover the cosmic significance of certain historical dates, such as the birth or the crucifixion of Jesus; this date underwent minor revisions before being finalized in the mid-7th century, although its precursors were developed c. AD 412. By the second half of the 7th century, the Creation Era was known in Western Europe, at least in Great Britain. By the late 10th century around AD 988, when the era appears in use on official government records, a unified system was recognized across the Eastern Roman world; the era was calculated as starting on September 1, Jesus was thought to have been born in the year 5509 since the creation of the world.
Historical time was thus calculated from the creation, not from Christ's birth, as in the west after the Anno Domini system was adopted between 6th and 9th centuries. The Eastern Church avoided the use of the Anno Domini system of Dionysius Exiguus, since the date of Christ's birth was debated in Constantinople as late as the 14th century. Otherwise the Byzantine calendar was identical to the Julian Calendar except that: the names of the months were transcribed from Latin into Greek; the leap day of the Byzantine calendar was obtained in an identical manner to the bissextile day of the original Roman version of the Julian calendar, by doubling the sixth day before the calends of March, i.e. by doubling 24 February. The Byzantine World Era was replaced in the Orthodox Church by the Christian Era, utilized by Patriarch Theophanes I Karykes in 1597, afterwards by Patriarch Cyril Lucaris in 1626, formally established by the Church in 1728. Meanwhile, as Russia received Orthodox Christianity from Byzantium, she inherited the Orthodox Calendar based on the Byzantine Era.
After the collapse of the Byzantine Empire in 1453, the era continued to be used by Russia, which witnessed millennialist movements in Moscow in AD 1492. It was only in AD 1700 that the Byzantine World Era in Russia was changed to the Julian Calendar by Peter the Great, it still forms the basis of traditional Orthodox calendars up to today. September AD 2000 began the year 7509 AM; the earliest extant Christian writings on the age of the world according to the Biblical chronology are by Theophilus, the sixth bishop of Antioch from the Apostles, in his apologetic work To Autolycus, by Julius Africanus in his Five Books of Chronology. Both of these early Christian writers, following the Septuagint version of the Old Testament, determined the age of the world to have been about 5,530 years at the birth of Christ. Ben Zion Wacholder points out that the writings of the Church Fathers on this subject are of vital significance, in that through the Christian chronographers a window to the earlier Hellenistic biblical chronographers is preserved: An immense intellectual effort was expended during the Hellenistic period by both Jews and pagans to date creation, the flood, building of the Temple...
In the course of their studies, men such as Tatian of Antioch, Clement of Alexandria, Hippolytus of Rome
Balinese saka calendar
The Balinese saka calendar is one of two calendars used on the Indonesian island of Bali. Unlike the 210-day pawukon calendar, it is based on the phases of the Moon, is the same length as the Gregorian year. Based on a lunar calendar, the saka year comprises sasih, of 30 days each. However, because the lunar cycle is shorter than 30 days, the lunar year has a length of 354 or 355 days, the calendar is adjusted to prevent it losing synchronization with the lunar or solar cycles; the months are adjusted by allocating two lunar days to one solar day every 9 weeks. This day is called ngunalatri, Sanskrit for "minus one night". To stop the Saka from lagging behind the Gregorian calendar – as happens with the Islamic calendar, an extra month, known as an intercalary month, is added after the 11th month, or after the 12th month; the length of these months is calculated according to the normal 63-day cycle. An intercalary month is added whenever necessary to prevent the final day of the 7th month, known as Tilem Kapitu, from falling in the Gregorian month of December.
The names the twelve months are taken from a mixture of Old Balinese and Sanskrit words for 1 to 12, are as follows: Kasa Karo Katiga Kapat Kalima Kanem Kapitu Kawalu Kasanga Kadasa Jyestha SadhaEach month begins the day after a new moon and has 15 days of waxing moon until the full moon 15 days of waning, ending on the new moon. Both sets of days are numbered 1 to 15; the first day of the year is the day after the first new moon in March. Note, that Nyepi falls on the first day of Kadasa, that the years of the Saka era are counted from that date; the calendar is 78 years behind the Gregorian calendar, is calculated from the beginning of the Saka Era in India. It is used alongside the 210-day Balinese pawukon calendar, Balinese festivals can be calculated according to either year; the Indian saka calendar was used for royal decrees as early as the ninth century CE. The same calendar was used in Java until Sultan Agung replaced it with the Javanese calendar in 1633; the Balinese Hindu festival of Nyepi, the day of silence, marks the start of the Saka year.
Tilem Kepitu, the last day of the 7th month, is known as Siva Ratri, is a night dedicated to the god Shiva. Devotees stay up all meditate. There are another 24 ceremonial days in the Saka year celebrated at Purnama. Eiseman, Fred B. Jr, Bali: Sekalia and Niskala Volume I: Essays on Religion and Art pp 182–185, Periplus Editions, 1989 ISBN 0-945971-03-6 Haer, Debbie Guthrie. ISBN 981 3018 496 Hobart, Angela. ISBN 0 631 17687 X Ricklefs, M. C.
Árpád was the head of the confederation of the Hungarian tribes at the turn of the 9th and 10th centuries. He might have been either the sacred ruler or kende of the Hungarians, or their military leader or gyula, although most details of his life are debated by historians, because different sources contain contradictory information. Despite this, many Hungarians refer to him as the "founder of our country", Árpád's preeminent role in the Hungarian conquest of the Carpathian Basin has been emphasized by some chronicles; the dynasty descending from Árpád ruled the Kingdom of Hungary until 1301. Árpád was the son of Álmos, mentioned as the first head of the confederation of the Hungarian tribes by all Hungarian chronicles. His mother's name and family are unknown. According to historian Gyula Kristó, Árpád was born around 845, his name derived from the Hungarian word for barley, árpa, of Turkic origin. The Byzantine Emperor Constantine Porphyrogenitus states that the Hungarians "had never at any time had any other prince" before Árpád, in sharp contrast to the Hungarian chronicles' report of the position of Árpád's father.
In Porphyrogenitus's narration, the Khazar khagan initiated the centralization of the command of the Hungarian tribes in order to strengthen his own suzerainty over them. The khagan wanted to appoint a chieftain named Levedi to lead the Hungarians. However, Levedi did not accept this offer and suggested that either Álmos or Árpád should be promoted instead of him; the khagan approached the Hungarians with this new proposal. They preferred Árpád to his father, because he was "greatly admired for wisdom and counsel and valour, capable of this rule". Thereafter, Árpád was made "prince according to the custom... of the Chazars, by lifting him upon a shield." Constantine Porphyrogenitus refers to Árpád as "great prince of Turkey". The reliability of the Byzantine emperor's report of Árpád's election is debated by modern historians: for instance, Victor Spinei states that it is "rather vague and scarcely credible", but András Róna-Tas writes that its core is reliable; the latter historian adds that Árpád's election was promoted by Álmos who forced Levedi kende to renounce.
Accordingly, in Róna-Tas's view, Árpád succeeded Levedi as sacred ruler or kende, which enabled his father to preserve his own position of the actual leader of the Hungarians or gyula. The earliest reliable source of Árpád's life is an early 10th-century document, the Continuation of the Chronicle by George the Monk, it narrates that the Byzantine Emperor Leo VI the Wise sent his envoy Nicetas Sclerus to the Hungarians in 894 or 895 "to give presents" and incite them against the Bulgarian Empire. Sclerus met with Árpád and Kurszán, at the Lower Danube. Sclerus's mission succeeded: a Hungarian army soon crossed the Danube on Byzantine ships against Bulgaria. An interpolation in Porphyrogenitus's text suggests that the invading Hungarians were under the command of Árpád's son, Liüntika; the positions held by Árpád and Kurszán at the time of their negotiations with Sclerus are debated by historians. Spinei wrote that Árpád was the gyula, Kurszán was the kende. In contrast, Kristó said that Kurszán was the gyula and Árpád represented his father, Álmos kende.
At that time, the Bulgarians had disregarded the peace treaty and were raiding through the Thracian countryside. Justice pursued them for breaking their oath to Christ our God, the emperor of all, they met up with their punishment. While our forces were engaged against the Saracens, divine Providence led the, in place of the Romans, to campaign against the Bulgarians. Our Majesty's fleet of ships supported them and ferried them across the Danube. sent them out against the army of the Bulgarians that had so wickedly taken up arms against Christians and, as though they were public executioners, they decisively defeated them in three engagements, so that the Christian Romans might not willingly stain themselves with the blood of the Christian Bulgarians. The Hungarian army defeated the Bulgarians; the Bulgarians and Pechenegs invaded the Hungarians' territories in the western regions of the Pontic steppes in 895 or 896. The destruction of their dwelling places by the Pechenegs forced the Hungarians to leave for a new homeland across the Carpathian Mountains towards the Pannonian Plain.
The Illuminated Chronicle says that Árpád's father Álmos "could not enter Pannonia, for he was killed in Erdelw" or Transylvania. Engel, Kristó and Molnár, who accept the reliability of this report, wrote that Álmos's death was a ritual murder, similar to the sacrifice of the Khazar khagans in case of a disaster affecting their people. In contrast with them, Róna-Tas states that if the report on Álmos's murder "reflects true event, the only possible explanation would be that Árpád or someone in his entourage" killed the aged prince. Spinei rejects the Illuminated Chronicle's report on Álmos's murder in Transylvania, because the last mention of Álmos in the contrasting narration of the Gesta Hungarorum is connected to a siege of Ungvár by the Hungarians; the latter chronicle says that Álmos appointed Árpád "as leader and master" of the Hungarians on this occasion. Árpád's name "is unknown" to all sources written in East Francia, one of the main powers of the Carpathian Basin at the turn of the 9th and 10th centuries.
These sources, including the Annales Alamannici and the Annales Eisnidlenses, only mention another Hungarian leader, Kurszán. According to Kristó and other historians, these sources suggest that Kurszán must have been the
The 10th century was the period from 901 to 1000 in accordance with the Julian calendar, the last century of the 1st millennium. In China the Song dynasty was established; the Muslim World experienced a cultural zenith in al-Andalus under the Caliphate of Córdoba. Additionally, it was the zenith for the Bulgarian Empires. Medievalist and historian of technology Lynn White said that "to the modern eye, it is nearly the darkest of the Dark Ages", but concluded that "... if it was dark, it was the darkness of the womb." Helen Waddell wrote that the 10th century was that which "in the textbooks disputes with the seventh the bad eminence, the nadir of the human intellect." In the 15th century, Lorenzo Valla described it as the Century of Lead and Iron and Cardinal Baronius as the Leaden Century or Iron Century. According to one estimate, the tenth century saw fewer deaths in war than any other century since 3000 BC; the beginning of the Medieval Warm Period The Byzantine empire reaches the height of its military and economic strength c. 909: The Fatimid Caliphate arises in eastern Algeria.
C. 948: The Nri Kingdom in what is now Southeastern Nigeria starts. C. 980: Al-Azhar University is established in Cairo by the Fatimid dynasty. The Christian Nubian kingdom reaches its peak of prosperity and military power Collapse of the central lowland Maya civilization. Post-Classic Maya period begins. Chichen Itza becomes a regional capital on the Yucatán Peninsula Rise of the Toltecs in Mexico Golden age of the Ancestral Puebloans The Mississippian culture begins in present-day Southern United States In 987 Ah Mekat Tutul Xiu unified Uxmal and Chichen Itza founding The League of Mayapan. Khazar kingdom is attacked and defeated by Kievan Rus Buddhist temple construction commences at Bagan, Burma In 907, Zhu Quanzhong deposes Emperor Ai of Tang and establishes a new Later Liang dynasty. In 907, Sumbing volcano erupts, according to Rukam inscription. In 907, King Balitung creates the Mantyasih inscription containing the list of Medang kings, moves the capital from Mamrati to Poh Pitu, expands Prambanan temple.
In 910, Parantaka I of the Chola Dynasty drives out the Pandyan from southern India into Lanka, which he eventually conquers. In 914, The Warmadewa dynasty rules Bali. In 919, the first use of gunpowder in battle occurs with the Chinese Battle of Langshan Jiang, where the Wuyue naval fleet under Qian Yuanguan defeats the Wu fleet. Qian had used flamethrowers ignited by gunpowder fuses to burn the Wu fleet. In 928, Ziyarid dynasty is established in northern Iran. In 928, During the reign of King Wawa, the capital of Medang Kingdom in Mataram is devastated by the massive eruption of Mount Merapi. In 929, Mpu Sindok moves the seat of power of the Medang Kingdom from Mataram in Central Java to Tamwlang in East Java and establishes Isyana Dynasty; the shift is as a result of the eruption of Mount Merapi and/or invasion from Srivijaya. In 930s, Persian Shia Buyid dynasty establishes and controls central and western part of Iran as well as most of Iraq. In 936, Goryeo Dynasty unifies Later Three Kingdoms of Korea.
In 937, Mpu Sindok moves the capital again from Tamwlang to Watugaluh, both near bank of Brantas River in modern Jombang in East Java. In 960, Zhao Kuangyin establishes Song dynasty. In 960 Seljuks convert to Islam. In 975, Ghaznavids dynasty, as the first Turk Sultanate, was established in Central Asia. In 979, Song dynasty reunites China. In 980's, Dynastic marriage between princess Mahendradatta of Javanese Isyanas and king Udayana of Balinese Warmadewas. Coastal cities on the Malay Peninsula are the seed for the first recorded Malay kingdoms In 990, King Dharmawangsa of Medang kingdom launches a naval invasion on Palembang in an unsuccessful attempt to conquer Srivijaya. In 990, son of King Udayana and Queen Mahendradatta was born in Bali. In 996, Dharmawangsa commissioned the translation of the Mahabharata into Old Javanese. In 999, Samanid dynasty was conquered by Ghaznavids. Viking groups settle in northern France 907: Loire Vikings overrun Brittany; the Norse become Normans The Hungarian army destroys the Bavarian forces under duke Liutpold and king Louis the Child in the Battle of Pressburg.
All the German force is annihilated. 911: Rollo granted County of Rouen by France: official foundation of Normandy. Foundation of Cluny, first federated monastic order Emperor Simeon the Great solidifies the First Bulgarian Empire as one of the most powerful states in Europe In 917 the Bulgarians destroyed the Byzantine army in the Battle of Anchialus, one of the bloodiest battles in the Middle Ages 927: official recognition of the first independent national Church in Europe, the Bulgarian Patriarchate 927: Kingdom of England becomes a unified state. C. 936: Gorm the Old becomes the first recognized king of Denmark, thus the Danish Monarchy is founded. 936: Alan II, with support from Æthelstan, commences the reconquest of Brittany. 955 The Battle of Lechfeld sees a decisive victory for Otto I the Great, King of the Germans, over the Hungarian harka Bulcsú and the chieftains Lél and Súr. Incursions of Magyar cavalry throughout Western Europe Mieszko I, first duke of Poland, baptised a Christian in 966 Collapse of Great Moravia The medieval Croatian state becomes a unified kingdom under King Tomislav Swedish influence extends to the Black Sea Volodymyr I, Prince of Kievan Rus', baptised a Christian in 988 Reindeer and bears become extinct in Britain Lions become extinct in Europe
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
The Nanakshahi calendar is a tropical solar calendar, used in Sikhism and is based on the'Barah Maha'. Barah Maha was composed by the Sikh Gurus and translates as the "Twelve Months", it is a poem reflecting the changes in nature which are conveyed in the twelve-month cycle of the Year. The year begins with 1 Chet corresponding to 14 March; the first year of the Nanakshahi Calendar starts in 1469 CE: the year of the birth of Guru Nanak Dev. The Nanakshahi Calendar is named after the founder of Guru Nanak Dev. Sikhs have traditionally recognised luni-solar calendars: the Nanakshahi and Khalsa. Traditionally, both these calendars followed the Bikrami calendar with the Nanakshahi year beginning on Katak Pooranmashi and the Khalsa year commencing with Vaisakhi; the methods for calculating the beginning of the Khalsa era were based on the Bikrami calendar. The year length was the same as the Bikrami solar year. According to Steel, the calendar has twelve lunar months that are determined by the lunar phase, but thirteen months in leap years which occur every 2–3 years in the Bikrami calendar to sync the lunar calendar with its solar counterpart.
Kay abbreviates the Khalsa Era as KE. References to the Nanakshahi Era have been made in historic documents. Banda Singh Bahadur adopted the Nanakshahi calendar in 1710 C. E. after his victory in Sirhind according to which the year 1710 C. E. became Nanakshahi 241. However, Singh states the date of the victory as 14 May 1710 CE. According to Dilagira, Banda "continued adopting the months and the days of the months according to the Bikrami calendar". Banda Singh Bahadur minted new coins called Nanakshahi. Herrli states. Although Banda may have proclaimed this era, it cannot be traced in contemporary documents and does not seem to have been used for dating". According to The Panjab Past and Present, it is Gian Singh who "is the first to use Nanak Shahi Samvats along with those of Bikrami Samvats" in the Twarikh Guru Khalsa. According to Singha, Gian Singh was a Punjabi author born in 1822. Gian Singh wrote the Twarikh Guru Khalsa in 1891; the revised Nanakshahi calendar was designed by Pal Singh Purewal to replace the Bikrami calendar.
The epoch of this calendar is the birth of the first Sikh Guru, Nanak Dev in 1469 and the Nanakshahi year commences on 1 Chet. New Year's Day falls annually on; the start of each month is fixed. According to Kapel, the solar accuracy of the Nanakshahi calendar is linked to the Gregorian civil calendar; this is because the Nanaskhahi calendar uses the tropical year instead of using the sidereal year, used in the Bikrami calendar or the old Nanakshahi and Khalsa calendars. The amended Nanakshahi calendar was adopted in 1998 but implemented in 2003 by the Shiromani Gurdwara Prabhandak Committee to determine the dates for important Sikh events; the calendar was implemented during the SGPC presidency of Sikh scholar Prof. Kirpal Singh Badungar at Takhat Sri Damdama Sahib in the presence of Sikh leadership. Nanakshahi Calendar recognizes the adoption event, of 1999 CE, in the Sikh history when SGPC released the first calendar with permanently fixed dates in the Tropical Calendar. Therefore, the calculations of this calendar do not regress back from 1999 CE into the Bikrami era, fixes for all time in the future.
Features of the Original Nanakshahi calendar: Uses the accurate Tropical year rather than the Sidereal year Called Nanakshahi after Guru Nanak Year 1 is the Year of Guru Nanak's Birth. As an example, April 14, 2019 CE is Nanakshahi 551. Is Based on Gurbani – Month Names are taken from Guru Granth Sahib Contains 5 Months of 31 days followed by 7 Months of 30 days Leap year every 4 Years in which the last month has an extra day Approved by Akal Takht in 2003 In 2010, the Shiromani Gurdwara Prabhandak Committee modified the calendar so that the dates for the start of the months are movable so that they coincide with the Bikrami calendar and changed the dates for various Sikh festivals so they are based upon the lunar phase; this has created controversy with some bodies adopting the original 2003 version called the "Mool Nanakshahi Calendar" and others, the 2010 version. By 2014, the SGPC had scrapped the original Nanakshahi calendar from 2003 and reverted to the Bikrami calendar however it was still published under the name of Nanakshahi.
The Sikh bodies termed it a step taken under pressure from the Shiromani Akali Dal. There is some controversy about the acceptance of the calendar altogether among certain sectors of the Sikh world. SGPC president, Gobind Singh Longowal, on 13 March 2018 urged all Sikhs to follow the current Nanakshahi calendar; the previous SGPC President before Longowal, Prof. Kirpal Singh Badungar, tried to appeal the Akal Takht to celebrate the birthday of Guru Gobind Singh on 23 Poh as per the original Nanakshahi calendar, but the appeal was denied; the PSGPC and a majority of the other gurdwara managements across the world are opposing the modified version of the calendar citing that the SGPC reverted to the Bikrami calendar. They argue that in the Bikrami calendar, dates of many gurpurbs coincide, thereby creating confusion among the Sikh Panth. According to Ahaluwalia, the Nanakshahi calendar goes against the use of lunar Bikrami dates by the Gurus themselves and is contradictory, it begins with the year of birth of
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