The Islamic, Muslim, or Hijri calendar is a lunar calendar consisting of 12 lunar months in a year of 354 or 355 days. It is used to determine the proper days of Islamic holidays and rituals, such as the annual period of fasting and the proper time for the pilgrimage to Mecca; the civil calendar of all countries where the religion is predominantly Muslim is the Gregorian calendar. Notable exceptions to this rule are Afghanistan, which use the Solar Hijri calendar. Rents and similar regular commitments are paid by the civil calendar; the Islamic calendar employs the Hijri era whose epoch was established as the Islamic New Year of 622 AD/CE. During that year and his followers migrated from Mecca to Yathrib and established the first Muslim community, an event commemorated as the Hijra. In the West, dates in this era are denoted AH in parallel with the Christian and Jewish eras. In Muslim countries, it is sometimes denoted as H from its Arabic form. In English, years prior to the Hijra are reckoned as BH.
The current Islamic year is 1440 AH. In the Gregorian calendar, 1440 AH runs from 11 September 2018 to 30 August 2019. For central Arabia Mecca, there is a lack of epigraphical evidence but details are found in the writings of Muslim authors of the Abbasid era. Inscriptions of the ancient South Arabian calendars reveal the use of a number of local calendars. At least some of these South Arabian calendars followed the lunisolar system. Both al-Biruni and al-Mas'udi suggest that the ancient Arabs used the same month names as the Muslims, though they record other month names used by the pre-Islamic Arabs; the Islamic tradition is unanimous in stating that Arabs of Tihamah and Najd distinguished between two types of months and forbidden months. The forbidden months were four months during which fighting is forbidden, listed as Rajab and the three months around the pilgrimage season, Dhu al-Qa‘dah, Dhu al-Hijjah, Muharram. Information about the forbidden months is found in the writings of Procopius, where he describes an armistice with the Eastern Arabs of the Lakhmid al-Mundhir which happened in the summer of 541 AD/CE.
However, Muslim historians do not link these months to a particular season. The Qur'an links the four forbidden months with Nasī’, a word that means "postponement". According to Muslim tradition, the decision of postponement was administered by the tribe of Kinanah, by a man known as the al-Qalammas of Kinanah and his descendants. Different interpretations of the concept of Nasī’ have been proposed; some scholars, both Muslim and Western, maintain that the pre-Islamic calendar used in central Arabia was a purely lunar calendar similar to the modern Islamic calendar. According to this view, Nasī’ is related to the pre-Islamic practices of the Meccan Arabs, where they would alter the distribution of the forbidden months within a given year without implying a calendar manipulation; this interpretation is supported by Arab historians and lexicographers, like Ibn Hisham, Ibn Manzur, the corpus of Qur'anic exegesis. This is corroborated by an early Sabaic inscription, where a religious ritual was "postponed" due to war.
According to the context of this inscription, the verb ns'’ has nothing to do with intercalation, but only with moving religious events within the calendar itself. The similarity between the religious concept of this ancient inscription and the Qur'an suggests that non-calendaring postponement is the Qur'anic meaning of Nasī’; the Encyclopaedia of Islam concludes "The Arabic system of can only have been intended to move the Hajj and the fairs associated with it in the vicinity of Mecca to a suitable season of the year. It was not intended to establish a fixed calendar to be observed." The term "fixed calendar" is understood to refer to the non-intercalated calendar. Others concur that it was a lunar calendar, but suggest that about 200 years before the Hijra it was transformed into a lunisolar calendar containing an intercalary month added from time to time to keep the pilgrimage within the season of the year when merchandise was most abundant; this interpretation was first proposed by the medieval Muslim astrologer and astronomer Abu Ma'shar al-Balkhi, by al-Biruni, al-Mas'udi, some western scholars.
This interpretation considers Nasī’ to be a synonym to the Arabic word for "intercalation". The Arabs, according to one explanation mentioned by Abu Ma'shar, learned of this type of intercalation from the Jews; the Jewish Nasi was the official. Some sources say that the Arabs followed the Jewish practice and intercalated seven months over nineteen years, or else that they intercalated nine months over 24 years. Postponement of one ritual in a particular circumstance does not imply alteration of the sequence of months, scholars agree that this did not happen. Al-Biruni says this did not happen, the festivals were kept within their season by intercalation every second or third year of a month between Dhu al-Hijjah and Muharram, he says that, in terms of the fixed calendar, not introduced until 10 AH, the first intercalation was, for example, of a month between Dhu al-Hijjah and Muharram, the second of a month between Muharram and Safar, the third of a month between Safar and Rabi'I, so on. The intercalations were arranged.
The notice of interca
The Roman calendar was the calendar used by the Roman kingdom and republic. The term includes the Julian calendar established by the reforms of the dictator Julius Caesar and emperor Augustus in the late 1st century BC and sometimes includes any system dated by inclusive counting towards months' kalends and ides in the Roman manner; the term excludes the Alexandrian calendar of Roman Egypt, which continued the unique months of that land's former calendar. Roman dates were counted inclusively forward to the next of three principal days: the first of the month, a day less than the middle of the month, eight days—nine, counting inclusively—before this; the original calendar consisted of 10 months beginning in spring with March. These months ran for 38 nundinal cycles, each forming an eight-day week ended by religious rituals and a public market; the winter period was divided into two months and February. The legendary early kings Romulus and Numa Pompilius were traditionally credited with establishing this early fixed calendar, which bears traces of its origin as an observational lunar one.
In particular, the kalends and ides seem to have derived from the first sighting of the crescent moon, the first-quarter moon, the full moon respectively. The system ran well short of the solar year, it needed constant intercalation to keep religious festivals and other activities in their proper seasons. For superstitious reasons, such intercalation occurred within the month of February after it was no longer considered the last month. After the establishment of the Roman Republic, years began to be dated by consulships and control over intercalation was granted to the pontifices, who abused their power by lengthening years controlled by their political allies and shortening the years in their rivals' terms of office. Having won his war with Pompey, Caesar used his position as Rome's chief pontiff to enact a calendar reform in 46 BC, coincidentally making the year of his third consulship last for 446 days. In order to avoid interfering with Rome's religious ceremonies, the reform added all its days towards the ends of months and did not adjust any nones or ides in months which came to have 31 days.
The Julian calendar was supposed to have a single leap day on 24 February every fourth year but following Caesar's assassination the priests figured this using inclusive counting and mistakenly added the bissextile day every three years. In order to bring the calendar back to its proper place, Augustus was obliged to suspend intercalation for one or two decades; the revised calendar remaining longer than the solar year, the date of Easter shifted far enough away from the vernal equinox that Pope Gregory XIII ordered its adjustment in the 16th century. The original Roman calendar is believed to have been an observational lunar calendar whose months began from the first signs of a new crescent moon; because a lunar cycle is about 29 1⁄2 days long, such months would have varied between 29 and 30 days. Twelve such months would have fallen 11 days short of the solar year. Given the seasonal aspects of the calendar and its associated religious festivals, this was avoided through some form of intercalation or through the suspension of the calendar during winter.
Rome's 8-day week, the nundinal cycle, was shared with the Etruscans, who used it as the schedule of royal audiences. It was a part of the early calendar and was credited in Roman legend variously to Romulus and Servius Tullius; the Romans themselves described their first organized year as one with ten fixed months, each of 30 or 31 days. Such a decimal division fitted general Roman practice; the four 31-day months were called "full" and the others "hollow". Its 304 days made up 38 nundinal cycles; the system is said to have left the remaining 50-odd days of the year as an unorganized "winter", although Licinius Macer's lost history stated the earliest Roman calendar employed intercalation instead and Macrobius claims the 10-month calendar was allowed to shift until the summer and winter months were misplaced, at which time additional days belonging to no month were inserted into the calendar until it seemed things were restored to their proper place. Roman writers credited this calendar to Romulus, their legendary first king and culture hero, although this was common with other practices and traditions whose origin had been lost to them.
Some scholars doubt the existence of this calendar at all, as it is only attested in late Republican and Imperial sources and supported only by the misplaced names of the months from September to December. Rüpke finds the coincidence of the length of the supposed "Romulan" year with the length of the first ten months of the Julian calendar to be suspicious. Other traditions existed alongside this one, however. Plutarch's Parallel Lives recounts that Romulus's calendar had been solar but adhered to the general principle that the year should last for 360 days. Months were employed secondarily and haphazardly, with some counted as 20 days and others as 35 or more; the attested calendar of the Roman Republic was quite different. It followed Gre
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
7th century BC
The 7th century BC began the first day of 700 BC and ended the last day of 601 BC. The Assyrian Empire continued to dominate the Near East during this century, exercising formidable power over neighbors like Babylon and Egypt. In the last two decades of the century, the empire began to unravel as numerous enemies made alliances and waged war from all sides; the Assyrians left the world stage permanently when their capital Nineveh was destroyed in 612 BC. These events gave rise to the Neo-Babylonian Empire, which would dominate the region for much of the following century. 699 BC: Khallushu succeeds Shuttir-Nakhkhunte as king of the Elamite Empire. 697 BC: Death of King Huan of Zhou, King of the Zhou Dynasty of China. 696 BC: King Zhuang of Zhou becomes King of the Zhou Dynasty of China. 696 BC: The Cimmerians ravage Phrygia, possible migration of the Armenians. 691 BC: King Sennacherib of Assyria defeats king Humban-nimena of Elam in the Battle of Halule. 690 BC: Taharqa, a king of the Twenty-fifth Dynasty, ascends the throne of Egypt.
690s: BC—W'rn Hywt of D'mt in Ethiopia appears in the inscriptional record and mentions the king of Saba', Karib'il Watar. C. 690 BC-664 BC—Sphinx of Taharqa, from Temple T, Nubia, is made. Twenty-fifth dynasty of Egypt, it is now kept at London. 689 BC: King Sennacherib of Assyria sacks Babylon. 687 BC: Gyges becomes king of Lydia. 687 BC: Hezekiah succeeded by Manasseh as king of Judah. 682 BC: Death of King Zhuang of Zhou, King of the Zhou Dynasty of China. 681 BC: King Xi of Zhou becomes King of the Zhou Dynasty of China. 681 BC: Esarhaddon succeeds Sennacherib as king of Assyria. 677 BC: Death of King Li of Zhou, King of the Zhou Dynasty of China. 677 BC: Esarhaddon leads the Assyrian army against rebellious Arab tribes, advances as far as the Brook of Egypt. 676 BC: King Hui of Zhou becomes King of the Zhou Dynasty of China. 675 BC: Esarhaddon begins the rebuilding of Babylon. 674 BC: Esarhaddon puts down a revolt in Ashkelon supported by Taharqa, king of Egypt. In response, the Assyrians invade Egypt.
673 BC: Tullus Hostilius becomes king of Rome. 671 BC: Esarhaddon again invades Egypt, capturing Memphis as well as a number of the royal family. 669 BC: Assurbanipal succeeds his father Esarhaddon as king of Assyria. 669 BC: Argos defeats Sparta for the last time, this time using a hoplite phalanx, at the battle of Hysiae. 668 BC: Shamash-shum-ukin, son of Esarhaddon, becomes King of Babylon. 668 BC: Egypt revolts against Assyria. 668 BC: Nineveh, capital of Assyria becomes the largest city of the world, taking the lead from Thebes in Egypt. 667 BC: Byzantium founded by Megaran colonists under Byzas. 664 BC: First naval battle in Greek recorded history, between Corinth and Corcyra. 664 BC: Assurbanipal captures and sacks Thebes, Egypt. 664 BC: Psammetichus I succeeds Necho I as king of Lower Egypt. 664 BC: Taharqa appoints his nephew Tantamani as his successor of Upper Egypt. February 11, 660 BC—Traditional founding date of Japan by Emperor Jimmu. 660 BC: First known use of the Demotic script. 660 BC: Psammetichus I drives the Assyrians out of Egypt.
660 BC: Estimated date of the impact that created the Kaali crater 650s BC: The Spartan Creed by Ancient Greek poet Tyrtaeus 650s BC: Occupation begins at Maya site of Piedras Negras, Guatemala. 657 BC: Cypselus becomes the first tyrant of Corinth. 656 BC: Psammetichus extends his control over all of Egypt. End of Twenty-fifth Dynasty. 653 BC: Atta-Khumma-In-Shushinak and Khumbanigash II succeed Shilhak-In-Shushinak and Tempti-Khumma-In-Shushinak as kings of the Elamite Empire. 652 BC: Babylonia rises in revolt under Shamash-shum-ukin against the Assyrians. 652 BC: Achaemenid dynasty in Persia. 651 BC: King Xiang of Zhou becomes King of the Zhou Dynasty of China. 650 BC: The town of Abdera in Thrace is founded by colonists from Clazomenae. 650 BC: A climate change affects all the Bronze Age cultures in Europe with colder and wetter climate, tribes from the Scandinavian Nordic Bronze Age cultures are pushed downwards into the European continent. 640s BC: Assyrian king Ashurbanipal founds library, which included our earliest complete copy of the Epic of Gilgamesh.
649 BC: Indabigash succeeds Tammaritu as a king of the Elamite Empire. 649 BC: Babylonian revolt under Shamash-shum-ukin is crushed by the Assyrians. 648 BC: Pankration becomes an event at the Ancient Olympic Games. April 6, 648 BC: Earliest Greek-chronicled solar eclipse. 647 BC: King Assurbanipal of Assyria sacks Susa 642 BC: Ancus Marcius becomes king of Rome. C.641 BC: Josiah becomes king of Judah. 640 BC: Decisive victory of Assyria over Elamite Empire. 632 BC: Cylon, Athenian noble, seizes the Acropolis in a failed attempt to become king. 632 BC: In the Battle of Chengpu, the Chinese kingdom of Jin and her allies defeat the kingdom of Chu and her allies. 631 BC: Founding of Cyrene, a Greek colony in Libya. 631 BC: Sadyates becomes king of Lydia. 627 BC: Death of Assurbanipal, king of Assyria. 626 BC: Nabopolassar revolts against Assyria, founds the Neo-Babylonian Empire. 625 BC: Medes and Babylonians assert their independence from Assyria and attack Nineveh. 623 BC: Sin-shar-ishkun succeeds his brother Assur-etel-ilani as king of Assyria.
622 BC: Text of Deuteronomy found in the Temple in Jerusalem. The Hebrew prophet Ezekiel said to be born this year. 619 BC: Alyattes becomes king of Lydia. 619 BC: Death of King Xiang of Zhou, King of the Zhou Dynasty of China. 618 BC: King Qing of Zhou becomes King of the Zhou Dynasty of China. 616 BC: Lucius Tarquinius Priscus becomes
5th century BC
The 5th century BC started the first day of 500 BC and ended the last day of 401 BC. This century saw the establishment of Pataliputra as a capital of the Magadha Empire; this city would become the ruling capital of different Indian kingdoms for about a thousand years. This period saw the rise of two great philosophical schools of the east and Buddhism; this period saw Mahavira and Buddha spreading their respective teachings in the northern plains of India. This changed the socio-cultural and political dynamics of the region of South Asia. Buddhism would go on to become one of the major world religions; this period saw the work of Yaska, who created Nirukta, that would lay the foundation stone for Sanskrit grammar and is one of the oldest works on grammar known to mankind. This century is traditionally recognized as the classical period of the Greeks, which would continue all the way through the 4th century until the time of Alexander the Great; the life of Socrates represented a major milestone in Greek philosophy though his teachings only survive through the work of his students, most notably Plato and Xenophon.
The tragedians Aeschylus and Euripides, as well as the comedian Aristophanes all date from this era and many of their works are still considered classics of the western theatrical canon. The Persian Wars, fought between a coalition of Greek cities and the vast Achaemenid Persian Empire was a pivotal moment in Greek politics. After having prevented the annexation of Greece by the Persians, the dominant power in the coalition, had no intention of further offensive action and considered the war over. Meanwhile, Athens counter-attacked, liberating Greek subjects of the Persian Empire up and down the Ionian coast and mobilizing a new coalition, the Delian League. Tensions between Athens, its growing imperialistic ambitions as leader of the Delian League, the traditionally dominant Sparta led to a protracted stalemate in the Peloponnesian war. Demotic becomes the dominant script of ancient Egypt. 499 BC: Aristagoras, acting on behalf of the Persian Empire, leads a failed attack on the rebellious island of Naxos.
499 BC: Aristagoras instigates the Ionian Revolt, beginning the Persian Wars between Greece and Persia. 499 BC: Sardis sacked by Athenian and Ionian troops. 498 BC: Leontini subjugated by Hippocrates of Gela. 498 BC: Alexander I succeeds his father Amyntas I as king of Macedon. 496 BC: Battle of Lake Regillus: A legendary early Roman victory, won over either the Etruscans or the Latins. 496 BC: Sophocles is born. 495 BC: Temple to Mercury on the Circus Maximus in Rome is built. 494 BC: The Battle of Lade, where Persians take back Ionia. 494 BC: Two tribunes of the plebs and two plebeian aediles are elected for the first time in Rome: the office of the tribunate is established. 494 BC: The year Rome changed from an Aristocratic Republic to a Liberalized Republic. 493 BC: Piraeus, the port town of Athens, is founded. 493 BC: Coriolanus captures the Volscian town of Corioli for Rome. 492 BC: First expedition of King Darius I of Persia against Greece, under the leadership of his son-in-law Mardonius. This marks the start of the campaign that culminated in the Battle of Marathon in 490 BC. 491 BC: Leotychidas succeeds his cousin Demaratus as king of Sparta.
491 BC: Gelo becomes Tyrant of Gela. 490 BC: The Battle of Marathon, where Darius I of Persia is defeated by the Athenians and Plataeans under Miltiades 490 BC: Phidippides runs 40 kilometers from Marathon to Athens to announce the news of the Greek victory. 489 BC: Cities of Rhodes unite and start construction of the new city of Rhodes. 488 BC: Leonidas I succeeds his brother Cleomenes I as king of Sparta after Cleomenes is judged insane. 487 BC: Egypt revolts against the Persians. 487 BC: Aegina and Athens go to war. 487 BC: Athenian Archonship becomes elective by lot, an important milestone in the move towards radical Athenian democracy. 486 BC: First part of the Grand Canal of China is built. 486 BC: Xerxes I succeeds Darius I as Great King of Persia. 486 BC: Egypt revolts against Persian rule. 486 BC: First Buddhist Council at Rejgaha, under the patronage of King Ajatasattu. Oral tradition established for the first time. 484 BC: Athenian playwright Aeschylus wins a poetry prize. 484 BC: Xerxes I abolishes the Kingdom of Babel and removes the golden statue of Bel.
484 BC: Persians regain control of Egypt. 483 BC: Gautama Buddha dies. 483 BC: Xerxes I of Persia starts planning his expedition against Greece 481 BC: The Isthmus of Corinth ends a war between Athens and Aegina. 480 BC: King Xerxes I of Persia sets out to conquer Greece. 480 BC: Cimon and his friends burn horse-bridles as an offering to Athena and join the marines 480 BC: Pleistarchus succeeds his father Leonidas I as king of Sparta. August, 480 BC: Battle of Artemisium—The Persian fleet fights an inconclusive battle with the Greek allied fleet. August 11, 480 BC: The Battle of Thermopylae, a costly victory by Persians over the Greeks. September 23, 480 BC: Battle of Salamis between Greece and Persia, leading to a Greek victory. 480 BC: Battle of Himera—The Carthaginians under Hamilcar are defeated by the Greeks of Sicily, led by Gelon of Syracuse. 480 BC: Roman troops march against the Veientines. 479 BC: The Battle of Plataea, the Greeks defeat the Persians, ending the Persian Wars. 479 BC: Battle of Mycale.
479 BC: Potidaea is struck by a tsunami. 479 BC: Chinese philosopher Confucius dies. 478 BC: Establishment of the Temple of Confucius at Qufu. 477 BC: The Delian League is inaugurated. 476 BC: Archidamus II succeeds his grandfather Leotychides, banished to Tegea, as king of Sparta. 475 BC: King Xuan of Zhou becomes King of the Zhou Dynasty. 474 BC: Battle of Cumae—The Syracusans under Hiero
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
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