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
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 1st century was the century AD 1 to AD 100 according to the Julian calendar. It is written as the 1st century AD or 1st century CE to distinguish it from the 1st century BC which preceded it; the 1st century is considered part of epoch, or historical period. During this period, North Africa and the Near East fell under increasing domination by the Roman Empire, which continued expanding, most notably conquering Britain under the emperor Claudius; the reforms introduced by Augustus during his long reign stabilized the empire after the turmoil of the previous century's civil wars. In the century the Julio-Claudian dynasty, founded by Augustus, came to an end with the suicide of Nero in AD 68. There followed the famous Year of Four Emperors, a brief period of civil war and instability, brought to an end by Vespasian, ninth Roman emperor, founder of the Flavian dynasty; the Roman Empire experienced a period of prosperity and dominance in this period and the First Century is remembered as part of the Empire's golden age.
The 1st century saw the appearance of Christianity. China continued to be dominated by the Han Dynasty, despite a fourteen-year interruption by the Xin dynasty under Wang Mang. Han rule was restored in AD 23; the capital was moved from Chang'an to Luoyang. Western Europe: Celtic, Germanic and Finnic tribal chiefdom and the Roman Empire Eastern Europe: Roman Empire, Sarmatian and Balt tribal chiefdoms North Africa: Roman Empire, Mauri and Gaetulian tribal chiefdoms West Africa: Gur, Kwa and Mande tribal chiefdoms Central Africa: Bantu tribes, collapsing Nok culture Nok civilization East Africa: Kingdom of Kush, Kingdom of Blemmyes, Kingdom of Aksum Southern Africa: Bantu tribes, Khoisan. Western Asia: Roman and Parthian Empires and Arabian Kingdoms, smaller tribes. Central Asia: Kushan Empire, Sarmatian and other Iranian tribal chiefdoms South Asia: Kushan Empire, Western Satraps, Satavahana Empire, Dravidian Kingdoms, Kingdom of Kalinga, Indo-Parthian Kingdom, Zhangzhung. Southeast Asia: Mandala of city-states, Kingdom of Funan East Asia: Han Dynasty, Yamatai and Xianbei tribal chiefdoms, Three Kingdoms of Korea.
North America: Central America: Mayan and Zapotec civilizations. Caribbean: South America: Nazca, Moche civilizations, Tairona tribal chiefdoms. Early 1st century – Augustus of Primaporta, is made, it is now kept in Braccio Nuovo, Rome. Early 1st century – Gemma Augustea is made, it is now kept at Vienna. Early 1st century – House of the Silver Wedding, Pompeii, is built. Excavated in 1893, the year of the silver wedding anniversary of Italy's King Humbert and his wife, Margherita of Savoy, who have supported archaeological fieldwork at Pompeii. Early 1st century - Inner shrine, Mie, Mie Prefecture, is built. Yayoi period. AD 1: Lions became extinct in Western Europe. AD 2: First census of China, the census is one of the most accurate in Chinese history. AD 6: Census of Quirinius. AD 7: Prince Cunobeline of Catuvellauni defeats the Trinovantes in England and establishes his capital at Camulodunum. AD 9: Three Roman legions were ambushed and destroyed at Teutoberg Forest by Germans under the leadership of Arminius.
AD 9: Prince Cunobeline is crowned King of Catuvellauni, his Kingdom dominates Southern England. AD 9 – 23: Wang Mang temporarily overthrew the Han dynasty of China. AD 9 – 23: Xin dynasty. AD 14: Augustus Caesar, first emperor of Rome, dies, his adopted son and son-in-law Tiberius is his successor. AD 25: The Han dynasty is restored by Liu Xiu who proclaims himself Emperor Guangwu of Han. AD 28 – 75: Emperor Ming of Han, Buddhism reaches China. Humans establish the Bunlap tribe, among others. C. AD 29: Jesus begins his ministry. C. AD 33: The Crucifixion of Jesus. C. AD 33 – 36: Conversion of Paul the Apostle. AD 40: Succession crisis erupts at King Cunobeline's court and his exiled younger son Prince Adminius flees to the court of Caligula in Rome. AD 40: Emperor Caligula plans to invade Britain, but forgets to bring an army, he instead declares war upon the sea, whipping it and taking shells as prisoners. AD 40 – 43: Revolts erupts in Vietnam by the Trung sisters. AD 42: King Cunobeline dies, his son Caratacus becomes King.
He and his brother conquer much of South-Eastern England, expanding territory into Atrebates, driving out King Verica. King Verica travels to Rome to the court of Claudius to help reclaim his throne. AD 43: Roman conquest of Britain begins. London is founded. AD 44: Death of Herod Agrippa. AD 41 – 54: Rachias, an ambassador sent from Sri Lanka to the court of Claudius. Buddhist monks in Sri Lanka first write down Buddha's teachings, creating the Pali canon; the regions of present-day Afghanistan and North India come under the control of the Kushans, a nomadic people forced out of northwest China by the Han Dynasty. Tacitus mentions the Suiones. Kaundinya, an Indian brahmin establishes the pre-Angkor Cambodian Kingdom of Funan; the Goths settle in northern Poland, which they called Gothiscandza, shape the Wielbark culture. C. AD 50: Christian Council of Jerusalem. Mid-1st century – Wall niche, from garden in Pompeii, is made, it is now kept at University of Cambridge, England. Mid-1st century – Detail of a wall painting in the House of M. Lucretius Fronto, Pompeii
1st millennium BC
The 1st millennium BC is the period of time between from the year 1000 BC to 1 BC. It encompasses the Iron Age in the Old World and sees the transition from the Ancient Near East to classical antiquity. World population doubled over the course of the millennium, from about 100 million to about 200–250 million; the Neo-Assyrian Empire dominates the Near East in the early centuries of the millennium, supplanted by the Achaemenid Empire in the 6th century. Ancient Egypt is in decline, falls to the Achaemenids in 525 BC. In Greece, Classical Antiquity begins with the colonization of Magna Graecia and peaks with the conquest of the Achaemenids and the subsequent flourishing of Hellenistic civilization; the Roman Republic supplants the Etruscans and the Carthaginians. The close of the millennium sees the rise of the Roman Empire; the early Celts dominate Central Europe. In East Africa, the Nubian Empire and Aksum arise. In South Asia, the Vedic civilization blends into the Maurya Empire; the Scythians dominate Central Asia.
In China, the Spring and Autumn period sees the rise of Confucianism. Towards the close of the millennium, the Han Dynasty extends Chinese power towards Central Asia, where it borders on Indo-Greek and Iranian states. Japan is in the Yayoi period; the Maya civilization rises in Mesoamerica. The first millennium BC is the formative period of the classical world religions, with the development of early Judaism Zoroastrianism in the Near East, Vedic religion and Vedanta and Buddhism in India. Early literature develops in Greek, Hebrew, Sanskrit and Chinese; the term Axial Age, coined by Karl Jaspers, is intended to express the crucial importance of the period of c. the 8th to 2nd centuries BC in world history. World population more than doubled over the course of the millennium, from about an estimated 50–100 million to an estimated 170–300 million. Close to 90% of world population at the end of the first millennium BC lived in the Iron Age civilizations of the Old World; the population of the Americas was below 20 million, concentrated in Mesoamerica.
The population of Oceania was less than one million people. 10th century BC Near East: Neo-Assyrian Empire Near East: Shoshenq I invades Canaan Aegean: Helladic period ends 9th century BC Egypt: 872 BC: Nile floods the Temple of Luxor Egypt: 836 BC: Civil war in Egypt North Africa: 814 BC: Carthage founded China: 841 BCndash. Greece: Archaic Greece, Greek alphabet Greece: Homer 776 BC: Greece: First Olympiad 753 BC: Europe: foundation of Rome 7th century BC 671 BC: Assyrian conquest of Egypt Near East: 631 BC: Death of Ashurbanipal, decline of the Assyrian Empire 6th century BC Egypt: 592 BC: Psamtik II sacks Napata Sudan: Aspelta moves the Kushite capital to Meroe Near East: 539 BC: Achaemenid conquest of Babylon under Cyrus the Great South Asia: Śramaṇa movement and "second urbanisation" South Asia: Early Buddhism Europe: 509 BC: Roman Republic 5th century BC China: 479 BC: death of Confucius China: 476 BC: Warring States period China: 486 BC: Grand Canal construction begins Near East: Second Temple Judaism, redaction of the Hebrew Bible Greece: beginning of the classical period.
Greece: Greco-Persian Wars Greece: 440 BC: Herodotus' Histories Greece: 431 BC: Peloponnesian War Oceania: Austronesian expansion reaches Western Polynesia 4th century BC Greece: 395 BC: Corinthian War Egypt: 343 BC: Achaemenid conquest Greece/Asia/Egypt: 330s BC: conquests of Alexander the Great, end of the Achaemenid Empire, Macedonian Empire, beginning of the Hellenistic period South Asia: Mauryan Empire 3rd century BC China: Qin Unified China China: 206 BC: Han Dynasty South Asia: 261 BC: Kalinga war Rome: Roman expansion in Italy Rome/Carthage: Punic Wars 264 BC: First Punic War 218 BC Second Punic War 2nd century BC Rome/Carthage: 149 BC Third Punic War, Roman province of Africa Rome/Greece: 146 BC Battle of Corinth, beginning of the Roman era South Asia: 185 BC: Fall of the Maurya Empire China: Confucianism became the state ideology of China 1st century BC China: 91 BC: Records of the Grand Historian finished Rome/Europe: 58-50 BC Gallic Wars Rome: 32/30 BC: Final War of the Roman Republic Rome/Egypt: 31 BC: Roman conquest of Egypt Rome/Europe/West Asia/Africa: 27 BC: Roman Empire Some of the central figures of the Axial Age are legendary or semi-legendary, with no contemporary written records available RulersChina: Dynasties in Chinese history, List of Chinese monarchs Egypt: Third Intermediate Period of Egypt Carthage: List of monarchs of Carthage Assyrian Empire: List of Assyrian kings Babylonia: Neo-Babylonian_dynasty Canaan / Biblical Levant: Kings of Israel and Judah Achaemenid Persia: List of monarchs of Persia Kingdom of Kush: List of monarchs of Kush Classical Greece: Monarchs: List of kings of Sparta, Thirty Tyrants Athenian democracy: Pericles Macedon: List of ancient Macedonians, Argead dynasty Hellenistic period: Ptolemaic Dynasty, Antigonid dynasty, Hasmonean dynasty Rome: kings of Rome, List of Roman consuls Parthian Empire: List of Parthian kings India: List of Indian monarchsReligion, p
2nd century BC
The 2nd century BC started the first day of 200 BC and ended the last day of 101 BC. It is considered part of the Classical era, although depending on the region being studied, other terms may be more suitable, it considered to be the end of the Axial Age. In the context of the Eastern Mediterranean, it is referred to as the Hellenistic period. Fresh from its victories in the Second Punic War, the Roman Republic continued its expansion into neighboring territories annexing Greece and the North African coast, after destroying the city of Carthage at the end of the Third Punic War. Rome's influence was felt in the Near East, as crumbling Hellenistic states like the Seleucid Empire were forced to make treaties on Roman terms to avoid confrontation with the new masters of the western Mediterranean; the end of the century witnessed the reform of the Roman Army from a citizen army into a voluntary professional force, under the guidance of the noted general and statesman Gaius Marius. In South Asia, the Mauryan Empire in India collapsed when Brihadnatha, the last emperor, was killed by Pushyamitra Shunga, a Mauryan general and the founder of the Shunga Empire.
In East Asia, China reached a high point under the Han Dynasty. The Han Empire extended its boundaries from Korea in the east to Vietnam in the South to the borders of modern-day Kazakhstan in the west. In the 2nd century BC, the Han dispatched the explorer Zhang Qian to explore the lands to the west and to form an alliance with the Yuezhi people in order to combat the nomadic tribe of the Xiongnu. 198 BC: Battle of Panium: Antiochus III of the Seleucid empire defeats Ptolemy V of Egypt and takes control of Coele Syria and Judea. 197 BC: Flamininus defeats Philip V of Macedon at the Battle of Cynoscephalae. 196 BC: Antiochus III conquers western Asia Minor and Thrace, with severe impact on relations with Rome. 196 BC: Empress Lü's execution of Han Xin leads to the Ying Bu rebellion. 195 BC: The War against Nabis marks the end of Spartan power in Greece. 195 BC: Emperor Gaozu of Han dies and is succeeded by his son Hui. True power falls to Empress Lü. 194 BC: Wiman establishes Wiman Joseon in Korea.
192 BC: Antiochus III invades Greece, beginning the Roman-Syrian War. 192 BC: The Yue Kingdom of Eastern Ou established in Zhejiang with Chinese support. 191 BC: Battle of Thermopylae: Glabrio drives Antiochus III out of Greece. 190 BC: Battle of Magnesia: Rome and Pergamon drive Antiochus III out of Asia Minor. 189 BC: Galatian War: Vulso and Pergamon defeat Galatia. 188 BC: Emperor Hui of Han dies. Empress Lü remains in power. 185 BC: Ptolemy V defeats Ankhmakis and regains control of Upper Egypt. C.185 BC: Pushyamitra Shunga assassinates the last Maurya emperor, founding the Shunga dynasty. 183 BC: Zhao Tuo of Nanyue declares himself Emperor and attacks China. 180 BC: Lü Clan Disturbance: with the death of Empress Lü, Emperor Wen of Han is placed on the throne. C.180 BC: Demetrius I of Bactria invades India, leading to the establishment of the Indo-Greek Kingdom. 179 BC: Tiberius Gracchus ends the First Celtiberian War. 179 BC: Zhao Tuo of Nanyue makes peace with China. 176 BC: The Yuezhi attack the Xiongnu.
175 BC: Antiochus IV Epiphanes, took possession of the Syrian throne, at the murder of his brother Seleucus IV Philopator, which rightly belonged to his nephew Demetrius I Soter. 174 BC: The Xiongnu defeat the Yuezhi, who emigrate to Ili valley. 168 BC: Roman victory in the Battle of Pydna leads to the dissolution of the Antigonid Kingdom of Macedon. 168 BC: Antiochus IV of the Seleucid empire invades Egypt, but is forced to turn back by Gaius Popillius Laenas. 167 BC: Mithradates I of Parthia takes Margiana and Aria from the Greco-Bactrian Kingdom. 164 BC, 25 Kislev: Judas Maccabaeus, son of Mattathias of the Hasmonean family, restores the Temple in Jerusalem. 164 BC: Ptolemy VIII drives Ptolemy VI out of Alexandria. He flees to Rome. 164 BC: Antiochus IV dies on campaign, leaving the Seleucid empire to a nine-year-old child. 163 BC: Ptolemy VI regains Alexandria. Ptolemy VIII takes Cyrenaica. 163 BC: The rebel Timarchus seizes Media and Babylonia. 163 BC: On May 20, Chinese mathematicians observed and recorded the passage of the Halley's Comet.
161 BC: Battle of Vijithapura: Dutthagamani defeats the Tamil King Ellalan. 161 BC: Demetrius I Soter seizes the Seleucid throne, beginning a succession war that would consume the Seleucid realm for a century. 160 BC: The Wusun drive the Yuezhi out of the Ili valley. 158 BC: The Xiongnu attack northern China. 157 BC: Emperor Wen of Han dies and is succeeded by his son Jing. 155 BC: The Lusitanians begin the Lusitanian War against Rome. 154 BC: The Celtiberians of Numantia begin the Numantine War against Rome. 154 BC: Liu Pi leads the Rebellion of the Seven States against Emperor Jing of Han China and is defeated. 152 BC: Alexander Balas starts a revolt against Demetrius I Soter with the support of Jonathan Maccabaeus 148 BC: Mithradates I of Parthia takes Ecbatana from the Seleucids. 148 BC: Rome conquers Macedonia. 147 BC: Hasmonean victories restore autonomy to Judea. 146 BC: Rome destroys and razes the city of Carthage and destroys the Achaean League and razes Corinth. 145 BC: Battle of Antioch: Alexander Balas of the Seleucid empire loses his throne and Ptolemy VI of Egypt loses his life.
145 BC: Ptolemy VIII takes control of Alexandria. C. 145 BC: Ai-Khanoum is sacked. 141 BC: Emperor Jing of Han dies and is succeeded by his son Wu whose attempts at reform are stymied by his grandmother. 139 BC: The assassination of Viriathus marks the end of the Lusitanian War. 139 BC: Mithradates I of Parthia defeats the Seleucid king Demetrius II Nicator and captures Babylonia. 138 BC: Minyue's invasion of Eastern Ou sparks off the H
Kali Yuga in Hinduism is the last of the four stages the world goes through as part of a'cycle of yugas' described in the Sanskrit scriptures. The other ages are called Satya Yuga, Treta Yuga, Dvapara Yuga. Kali Yuga is associated with the demon Kali; the "Kali" of Kali Yuga means "strife", "discord", "quarrel" or "contention". According to Puranic sources, Krishna's departure marks the end of Dvapara Yuga and the start of Kali Yuga, dated to 17/18 February 3102 BCE. According to the Surya Siddhanta, Kali Yuga began at midnight on 18 February 3102 BCE; this is considered the date on which Lord Krishna left the earth to return to Vaikuntha. This information is placed at the temple of the place of this incident. According to the astronomer and mathematician Aryabhatta the Kali Yuga started in 3102 BCE, he finished his book "Aryabhattiya" in 499 CE, in which he gives the exact year of the beginning of Kali Yuga. He writes that he wrote the book in the "year 3600 of the Kali Age" at the age of 23; as it was the 3600th year of the Kali Age when he was 23 years old, given that Aryabhatta was born in 476 CE, the beginning of the Kali Yuga would come to 3102 BCE.
According to KD Abhyankar, the starting point of Kali Yuga is an rare planetary alignment, depicted in the Mohenjo-Daro seals. Going by this alignment the year 3102 BCE is off; the actual date for this alignment is 7 February of 3104 BCE. There is sufficient proof to believe that Vrdhha Garga knew of precession at least by 500 BCE. Garga had calculated the rate of precession to within 30 % of; the common belief until Swami Sri Yukteswar Giri had analyzed the dating of the Yuga cycles was that the Kali Yuga would last for 432,000 years after the end of the Dwapara Yuga. This originated during the puranic times when the famous astronomer Aryabhatta recalculated the timeline by artificially inflating the traditional 12,000 year figure with a multiplication of 360, represented as the number of "human years" that make up a single "divine year"; this was a purposeful miscalculation due to conflicts with one of the preeminent astronomer of the time Brahmagupta. However, both the Mahabharata and the Manu Smriti have the original value of 12,000 years for one half of the Yuga cycle.
Contemporary analysis of historical data from the last 11 millennia matches with the indigenous Saptarishi Calendar. The length of the transitional periods between each Yuga is unclear, can only be estimated based on historical data of past cataclysmic events. Using a 300 year period for transitions, Kali Yuga has either ended in the past 100 to 200 years, or is to end soon sometime in the next 100 years. Other authors, such as the revered Hindu guru Swami Sri Yukteswar in his book The Holy Science, as well as the influential Yogi Paramhansa Yogananda, believe that the Kali Yuga has ended, that we are now in an ascending Dvapara Yuga; this calculation is supported by modern day spiritual masters such as Sadhguru Jaggi Vasudev. Hindus believe that human civilization degenerates spiritually during the Kali Yuga, referred to as the Dark Age because in it people are as far away as possible from God. Hinduism symbolically represents morality as an Indian bull. Common attributes and consequences are spiritual bankruptcy, mindless hedonism, breakdown of all social structure and materialism, unrestricted egotism and maladies of mind and body.
In Satya Yuga, the first stage of development, the bull has four legs, but in each age morality is reduced by one quarter. By the age of Kali, morality is reduced to only a quarter of that of the golden age, so that the bull of Dharma has only one leg; the Mahabharata War and the decimation of Kauravas thus happened at the "Yuga-Sandhi", the point of transition from one yuga to another. The scriptures mention Sage Narada to have momentarily intercepted the demon Kali on his way to the Earth when Duryodhana was about to be born in order to make him an embodiment of arishadvargas and adharma in preparation of the era of decay in values and the consequent havoc. A discourse by Markandeya in the Mahabharata identifies some of the attributes of Kali Yuga. In relation to rulers, it lists: Rulers will become unreasonable: they will levy taxes unfairly. Rulers will no longer see it as their duty to promote spirituality, or to protect their subjects: they will become a danger to the world. People will start seeking countries where wheat and barley form the staple food source.
"At the end of Kali-yuga, when there exist no topics on the subject of God at the residences of so-called saints and respectable gentlemen of the three higher varnas and when nothing is known of the techniques of sacrifice by word, at that time the Lord will appear as the supreme chastiser." (Srimad-Bhagavatam With regard to human relationships, Markandeya's discourse says: Avarice and wrath will be common. Humans will display animosity towards each other. Ignorance of dharma will occur. People will see nothing wrong in that. Lust will be viewed as acceptable and sexual intercourse will be seen as the central requirement of life. Sin will increase exponentially, while virtue will cease to flourish. People will become addicted to intoxicating drugs. Gurus will no longer be respected and their students will attempt
The Buddhist calendar is a set of lunisolar calendars used in mainland Southeast Asian countries of Cambodia, Laos and Thailand as well as in Sri Lanka and Chinese populations of Malaysia and Singapore for religious or official occasions. While the calendars share a common lineage, they have minor but important variations such as intercalation schedules, month names and numbering, use of cycles, etc. In Thailand, the name Buddhist Era is a year numbering system shared by the traditional Thai lunisolar calendar and by the Thai solar calendar; the Southeast Asian lunisolar calendars are based on an older version of the Hindu calendar, which uses the sidereal year as the solar year. One major difference is that the Southeast Asian systems, unlike their Indian cousins, do not use apparent reckoning to stay in sync with the sidereal year. Instead, they employ their versions of the Metonic cycle. However, since the Metonic cycle is not accurate for sidereal years, the Southeast Asian calendar is drifting out of sync with the sidereal one day every 100 years.
Yet no coordinated structural reforms of the lunisolar calendar have been undertaken. Today, the traditional Buddhist lunisolar calendar is used for Theravada Buddhist festivals, no longer has the official calendar status anywhere; the Thai Buddhist Era, a renumbered Gregorian calendar, is the official calendar in Thailand. The calculation methodology of the current versions of Southeast Asian Buddhist calendars is based on that of the Burmese calendar, in use in various Southeast Asian kingdoms down to the 19th century under the names of Chula Sakarat and Jolak Sakaraj; the Burmese calendar in turn was based on the "original" Surya Siddhanta system of ancient India. One key difference with Indian systems is that the Burmese system has followed a variation of the Metonic cycle, it is unclear from where, how the Metonic system was introduced. The Burmese system, indeed the Southeast Asian systems, thus use a "strange" combination of sidereal years from Indian calendar in combination with the Metonic cycle better for tropical years.
In all Theravada traditions, the calendar's epochal year 0 date was the day in which the Buddha attained parinibbāna. However, not all traditions agree on when it took place. In Burmese Buddhist tradition, it was 13 May 544 BCE, but in Thailand, it was 11 March 545 BCE, the date which the current Thai lunisolar and solar calendars use as the epochal date. Yet, the Thai calendars for some reason have fixed the difference between their Buddhist Era numbering and the Christian/Common Era numbering at 543, which points to an epochal year of 544 BCE, not 545 BCE. In Myanmar, the difference between BE and CE can be 543 or 544 for CE dates, 544 or 543 for BCE dates, depending on the month of the Buddhist Era. In Sri Lanka, the difference between BE and CE is 544; the calendar recognizes two types of months: sidereal month. The Synodic months are used to compose the years while the 27 lunar sidereal days, alongside the 12 signs of the zodiac, are used for astrological calculations; the days of the month are counted in two halves and waning.
The 15th of the waxing is the civil full moon day. The civil new moon day is the last day of the month; because of the inaccuracy of the calendrical calculation systems, the mean and real New Moons coincide. The mean New Moon precedes the real New Moon; as the Synodic lunar month is 29.5 days, the calendar uses alternating months of 29 and 30 days. Various regional versions of Chula Sakarat/Burmese calendar existed across various regions of mainland Southeast Asia. Unlike Burmese systems, Lan Na, Lan Xang and Sukhothai systems refer to the months by numbers, not by names; this means reading ancient texts and inscriptions in Thailand requires constant vigilance, not just in making sure one is operating for the correct region, but for variations within regions itself when incursions cause a variation in practice. However, Cambodian month system, which begins with Margasirsa as the first month, demonstrated by the names and numbers; the Buddhist calendar is a lunisolar calendar in which the months are based on lunar months and years are based on solar years.
One of its primary objectives is to synchronize the lunar part with the solar part. The lunar months twelve of them, consist alternately of 29 days and 30 days, such that a normal lunar year will contain 354 days, as opposed to the solar year of ~365.25 days. Therefore, some form of addition to the lunar year is necessary; the overall basis for it is provided by cycles of 57 years. Eleven extra days are inserted in every 57 years, seven extra months of 30 days are inserted in every 19 years; this provides 20819 complete days to both calendars. This 57-year cycle would provide a mean year of about 365.2456 days and a mean month of about 29.530496 days, if not corrected. As such, the calendar adds an intercalary month in leap years and sometimes an intercalary day in great leap years; the intercalary month not only corrects the length of the year but corrects the accumulating error of the month to extent of half a day. The average length of the month is further corrected by adding a day to Nayon