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
Ptolemy II Philadelphus
Ptolemy II Philadelphus was the king of Ptolemaic Egypt from 283 to 246 BCE. He was the son of Ptolemy I Soter, the Macedonian Greek general of Alexander the Great who founded the Ptolemaic Kingdom after the death of Alexander, queen Berenice I from Macedon in northern Greece. During Ptolemy II's reign, the material and literary splendour of the Alexandrian court was at its height, he promoted the Library of Alexandria. He erected the Great Mendes Stela, he led the Ptolemaic Kingdom against the rival Seleucid Empire in the first of a series of Syrian Wars that witnessed periodic territorial changes between the two powers in West Asia. Ptolemy II was the son of Ptolemy I Soter and Berenice I, he had Arsinoe II and Philotera. He was educated by Philitas of Cos. Ptolemy II had numerous half-siblings. Two of his father's sons by his previous marriage to Eurydice, Ptolemy Keraunos and Meleager, became kings of Macedonia; the children of his mother Berenice's first marriage to Philip included Magas of Cyrene.
Pyrrhus of Epirus became his brother-in-law through marriage to Ptolemy's maternal half-sister Antigone. Ptolemy's first wife, Arsinoe I, daughter of Lysimachus, was the mother of his legitimate children: Ptolemy III Euergetes, his successor. Lysimachus of Egypt Berenice Phernopherus, who married the Seleucid emperor Antiochus II TheosAfter he repudiated Arsinoe, he married his full sister Arsinoe II, widow of Lysimachus, which brought him her Aegean possessions, he had several concubines. With a woman named Bilistiche he is said to have had an son named Ptolemy Andromachou, he had many mistresses, including Agathoclea, Aglais daughter of Megacles, the cup-bearer Cleino, the Chian harp player Glauce, the flautist Mnesis, the actress Myrtion, the flautist Pothine and Stratonice. His court and dissolute, intellectual and artificial, has been compared with the Palace of Versailles of Louis XIV of France. Ptolemy deified his sister-wife after their deaths. Ptolemy II began his reign as co-regent with his father, Ptolemy Soter, from c. 285 to c. 283 BCE, maintained a splendid court in Alexandria.
Egypt was involved in several wars during his reign. His maternal half-brother Magas had declared himself king of Cyrene in 276 and began a war against Ptolemy's government in 274 BCE. Magas managed to keep Cyrenaica independent of the Ptolemies until his death in 250 BCE. Magas' attack on the Ptolemies began. Two or three years of war followed. Egypt's victories solidified the kingdom's position as the undisputed naval power of the eastern Mediterranean; the Ptolemaic sphere of power extended over the Cyclades to Samothrace, the harbours and coast towns of Cilicia Trachea, Pamphylia and Caria. In 275/4, Ptolemaic forces annexed the Triakontaschoinos. In 270, Ptolemy hired 4000 Gallic mercenaries. According to Pausanias, soon after arrival the Gauls plotted "to seize Egypt," and so Ptolemy marooned them on a deserted island in the Nile where “they perished at one another’s hands or by famine.”The victory won by Antigonus II Gonatas, king of Macedonia, over the Egyptian fleet at Kos did not long interrupt Ptolemy's command of the Aegean Sea.
In the Second Syrian War with the Seleucid Empire of Antiochus II Theos, Ptolemy sustained losses on the seaboard of Anatolia and agreed to a peace by which Antiochus married Ptolemy's daughter Berenice Phernopherus. Ptolemy was of a delicate constitution. Elias Joseph Bickerman gives the date of his death as 29 January; the material and literary splendour of the Alexandrian court was at its height under Ptolemy II. Pomp and splendor flourished, he had exotic animals of far off lands sent to Alexandria, staged a procession in Alexandria in honor of Dionysus led by 24 chariots drawn by elephants and a procession of lions, panthers, antelopes, wild asses, ostriches, a bear, a giraffe and a rhinoceros. According to scholars, most of the animals were in pairs - as many as eight pairs of ostriches - and although the ordinary chariots were led by a single elephant, others which carried a 7-foot-tall golden statue may have been led by four. Although an enthusiast for Hellenic culture, he adopted Egyptian religious concepts, which helped to bolster his image as a sovereign.
Callimachus, keeper of the library, a host of lesser poets, glorified the Ptolemaic family. Ptolemy himself was eager to patronize scientific research, he is thought to be the patron. The tradition preserved in the pseudepigraphical Letter of Aristeas which connects the Septuagint translation of the Hebrew Bible into Greek with his patronage is overdrawn. However, Walter Kaiser says, "There can be little doubt that the Law was translated in Philadelphus's time since Greek quotations from Genesis and Exodus appear in Greek literature before 200 BCE The language of the Septuagint is more like Egyptian Greek than it is like Jerusalemite Greek, according to some." Ptolemy is recorded by Pliny the Elder as having sent an ambassador named Dionysius to the Mauryan court at Pataliputra in India to Emperor Ashoka: "But has been treated of by several other Greek writers who resided at the
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.
Republic of China (1912–1949)
The Republic of China controlled the Chinese mainland between 1912 and 1949. It was established in January 1912 after the Xinhai Revolution, which overthrew the Qing dynasty, the last imperial dynasty of China, its government moved to Taipei in December 1949 due to the Kuomintang's defeat in the Chinese Civil War. The Republic's first president, Sun Yat-sen, served only before handing over the position to Yuan Shikai, leader of the Beiyang Army, his party led by Song Jiaoren, won the parliamentary election held in December 1912. Song Jiaoren was assassinated shortly after and the Beiyang Army led by Yuan Shikai maintained full control of the Beiyang government. Between late 1915 and early 1916, Yuan Shikai tried to reinstate the monarchy before abdicating due to popular unrest. After Yuan Shikai's death in 1916, members of cliques in the Beiyang Army claimed their autonomy and clashed with each other. During this period, the authority of the Beiyang government was weakened by a restoration of the Qing dynasty.
In 1921, Sun Yat-sen's Kuomintang established a rival government in Canton City, Canton Province, together with the fledgling Communist Party of China. The economy of North China, overtaxed to support warlord adventurism, collapsed between 1927 and 1928. General Chiang Kai-shek, who became KMT leader after Sun Yat-sen's death, started the Northern Expedition military campaign in 1926 to overthrow the Beiyang government, completed in 1928. In April 1927, Chiang established a nationalist government in Nanking, massacred communists in Shanghai, which forced the CPC into armed rebellion, marking the beginning of the Chinese Civil War. There were industrialization and modernization, but conflict between the Nationalist government in Nanking, the CPC, remnant warlords, the Empire of Japan. Nation-building took a backseat to the Second Sino-Japanese War when the Imperial Japanese Army launched an offensive against China in 1937 that turned into a full-scale invasion. After the surrender of Japan at the end of World War II in 1945, the Chinese Civil War resumed in 1946 between the KMT and CPC, with both sides receiving foreign assistance due to the Cold War from the USA and USSR, respectively.
During this period, the 1946 Constitution of the Republic of China replaced the 1928 Organic Law as the Republic's fundamental law. Near the end of the Chinese Civil War in 1949, the Chinese Communist Party established the People's Republic of China, overthrowing the nationalist government on the Chinese mainland; the Government of the Republic of China moved from Nanking to Taipei in 1949, controlling only the Taiwan area after 1949. The official name of the state in the mainland was the "Republic of China". Shortly after the ROC's establishment in 1912, while it was still located on the Chinese mainland, the government used the short form "China" to refer to itself, which derives from zhōng and guó, a term which developed under the Zhou dynasty in reference to its royal demesne, the name was applied to the area around Luoyi during the Eastern Zhou and to China's Central Plain before being used as an occasional synonym for the state during the Qing era; the ROC used alternate names throughout its existence were Republican China or Republican Era, as well as the Beiyang government, the Nationalist government.
A republic was formally established on 1 January 1912 following the Xinhai Revolution, which itself began with the Wuchang Uprising on 10 October 1911 overthrowing the Qing dynasty and ending over two thousand years of imperial rule in China. From its founding until 1949 it was based on mainland China. Central authority waxed and waned in response to warlordism, Japanese invasion, a full-scale civil war, with central authority strongest during the Nanjing Decade, when most of China came under the control of the Kuomintang under an authoritarian one-party military dictatorship. At the end of World War II in 1945, the Empire of Japan surrendered control of Taiwan and its island groups to the Allies, Taiwan was placed under the Republic of China's administrative control; the communist takeover of mainland China in the Chinese Civil War in 1949 left the ruling Kuomintang with control over only Taiwan, Kinmen and other minor islands. With the 1949 loss of mainland China in the civil war, the ROC government retreated to Taiwan and the KMT declared Taipei the provisional capital.
The Communist Party of China took over all of mainland China and founded the People's Republic of China in Beijing. In 1912, after over two thousand years of imperial rule, a republic was established to replace the monarchy; the Qing dynasty that preceded the republic experienced a century of instability throughout the 19th century, suffered from both internal rebellion and foreign imperialism. The ongoing instability led to the outburst of Boxer Rebellion in 1900, whose attacks on foreigners led to the invasion by the Eight Nation Alliance. China signed the Boxer Protocol and paid a large indemnity to the foreign powers: 450 million taels of fine silver. A program of institutional reform proved too late. Only the lack of an alternative regime prolonged its existence until 1912; the establishment of the Chinese Republic developed out of the Wuchang Uprising against the Qing government on 10 October 1911. That date is now celebrated annually as the ROC's national day known as the "Double Ten Day".
On 29 December 1911, Sun Yat-sen was elected president b
4th century BC
The 4th century BC started the first day of 400 BC and ended the last day of 301 BC. It is considered part of epoch, or historical period; this century marked the height of Classical Greek civilization in all of its aspects. By the year 400 Greek philosophy, art and architecture had spread far and wide, with the numerous independent Greek colonies that had sprung up throughout the lands of the eastern Mediterranean. Arguably the most important series of political events in this period were the conquests of Alexander, bringing about the collapse of the once formidable Persian Empire and spreading Greek culture far into the east. Alexander dreamed of an east/west union, but when his short life ended in 323 BC, his vast empire was plunged into civil war as his generals each carved out their own separate kingdoms, thus began the Hellenistic age, a period characterized by a more absolute approach to rule, with Greek kings taking on royal trappings and setting up hereditary successions. While a degree of democracy still existed in some of the remaining independent Greek cities, many scholars see this age as marking the end of classical Greece.
In India, the Mauryan Empire was founded in 322 BC by Chandragupta Maurya who expanded his power westwards across central and western India, taking advantage of the disruptions of local powers in the wake of the withdrawal westward by the armies of Alexander. China in the 4th century BC entered an era of constant warfare known as the Warring States period; the period saw the rapid rise of large states over smaller ones thanks to technological advancement. Though the period has been characterized by historians as being excessively violent compared to the Spring and Autumn period, it was punctured by several cultural and social growths through the expansion of several different sects of Confucianism and Taoism, the formulation of Legalist thought. Oldest Brāhmī script dates from this period. Brāhmī is the ancestor of Brahmic scripts, used in much of Southeast Asia. Romans build their first aqueduct. Chinese use the handheld trigger crossbow for the first time; the first crossbow, the gastraphetes, is invented at Syracuse.
Burnt brick'or fired bricks' were first used in Medeterranean Civilizations. Donkey-powered mills or ` Pompeiian Mills' were first used in Italy. In Greece, Aristotle proposes the division of the known sciences. Torque with lion's-head terminals, from Susa was made, it is now in Paris. Daric, a coin first minted under Darius I of Persia is made, it is now kept in Ashmolean Museum, Oxford. Second half of the 4th century BC – Tomb II, so called Tomb of Philip II of Macedon, Macedonia is made. Starting in the year 309 BC, the Chinese historian Sima Qian wrote that the Qin-employed engineer Bi Ling of the newly conquered State of Shu in Sichuan had the shoulder of a mountain cut through, making the'Separated Hill' that abated the Mo River, excavated two canals in the plain of Chengdu; the significance of this was phenomenal, as it allowed the new Guardian irrigation system to populate an area of some 40 by 50 miles with over five million people, still in use today. The Chinese astronomer Gan De divides the celestial sphere into 365¼ degrees, the tropical year into 365¼ days at a time when most astronomers used the Babylon division of the celestial sphere as 360 degrees.
First written in Sanskrit. Agnodice, female Athenian physician and midwife Alexander the Great, king of Macedon Antigonus I Monophthalmus, Macedonian diadoch Antipater, Macedonian statesman Atropates, Persian nobleman Bessus, Persian satrap of Bactria Cassander, King of Macedon Chandragupta Maurya, Founder of the "Mauryan Dynasty" Craterus, Macedonian diadoch Darius III, king of the Achaemenid Empire Demetrius Poliocretes, King of Macedon Demosthenes, Athenian statesman and orator Dhana Nanda, last emperor of the Nanda dynasty Duke Xiao of Qin, ruler of Qin Epaminondas, Theban statesman Hephaestion, Macedonian general King Wuling of Zhao, ruler of Zhao Lysimachus, Macedonian diadoh and king of Thrace Mahapadma Nanda, founding emperor of the Nanda dynasty Manius Curius Dentatus, Roman statesman Nakhthorheb, last native Pharaoh of Egypt Pang Juan, Chinese general Parmenion, Macedonian general Pelopidas, Theban statesman Perdiccas, Macedonian diadoh Philip II, King of Macedon Ptolemy I Soter, Macedonian diadoh and king of Egypt Porus, King of the Pauravas, in the Indian Subcontinent Seleucus I Nicator, Macedonian diadoh and founder of the Seleucid Empire Shang Yang, Chinese statesman Su Qin, Chinese politician and strategist Tian Ji, Chinese general Zhang Yi, Chinese strategist Apelles, Greek painter Cephisodotus the Elder, Greek sculptor Leochares, Greek sculptor Lysippos, Greek sculptor Praxiteles, Greek sculptor Scopas, Greek sculptor and architect Demetrius of Phalerum, Greek rhetorician Isocrates, Greek rhetorician and writer Menander, Greek playwright Onesicritus, Greek historical writer Qu Yuan, Chinese poet Simonides of Ceos, Greek lyric poet Xenophon, Greek historian and writer Anaximenes of Lampsacus, Greek rhetorician and historian.
Antisthenes, Greek philosopher Archytas, Greek philosopher Aristippus, Greek philosopher Aristotle, Greek philosopher Callisthenes, Greek historian Chanakya, Indian economist and political advisor Crates of Thebes, Greek philosopher Diogenes of Sinope, Greek philosopher Epicurus, Greek philosopher Mencius, Chinese philosopher Panini, Indian philosopher and writer Plato, Greek philosopher Pyrrho, Greek philosopher Socrates, Greek Philo
3rd century BC
The 3rd century BC started the first day of 300 BC and ended the last day of 201 BC. It is considered part of epoch, or historical period. In the Mediterranean Basin, the first few decades of this century were characterized by a balance of power between the Greek Hellenistic kingdoms in the east, the great mercantile power of Carthage in the west; this balance was shattered when conflict arose between the Roman Republic. In the following decades, the Carthaginian Republic was first humbled and destroyed by the Romans in the First and Second Punic Wars. Following the Second Punic War, Rome became the most important power in the western Mediterranean. In the eastern Mediterranean, the Seleucid Empire and Ptolemaic Kingdom, successor states to the empire of Alexander the Great, fought a series of Syrian Wars for control over the Levant. In mainland Greece, the short-lived Antipatrid dynasty of Macedon was overthrown and replaced by the Antigonid dynasty in 294 BC, a royal house that would dominate the affairs of Hellenistic Greece for a century until the stalemate of the First Macedonian War against Rome.
Macedon would lose the Cretan War against the Greek city-state of Rhodes and its allies. In India, Ashoka ruled the Maurya Empire; the Pandya and Chera dynasties of the classical age flourished in the ancient Tamil country. The Warring States period in China drew to a close, with Qin Shi Huang conquering the six other nation-states and establishing the short-lived Qin dynasty, the first empire of China, followed in the same century by the long-lasting Han dynasty. However, a brief interregnum and civil war existed between the Qin and Han periods known as the Chu-Han contention, lasting until 202 BC with the ultimate victory of Liu Bang over Xiang Yu; the Protohistoric Period began in the Korean peninsula. In the following century the Chinese Han dynasty would conquer the Gojoseon kingdom of northern Korea; the Xiongnu were at the height of their power in Mongolia. They defeated the Han Chinese at the Battle of Baideng in 200 BC, marking the beginning of the forced Heqin tributary agreement and marriage alliance that would last several decades.
299 BC: The Samnites, seizing their chance when Rome is engaged on the Lombard plain, start the Third Samnite War with a collection of mercenaries from Gaul and Sabine and Etruscan allies to help them. 298 BC: The Samnites defeat the Romans under Lucius Cornelius Scipio Barbatus in the Battle of Camerinum, the first battle of the Third Samnite War. 294 BC: Antipater II of Macedon is killed by Lysimachus, allowing Demetrius I to become king of Macedonia, thus ending the Antipatrid dynasty's control over Hellenistic Greece and ushering in a period of rule by the Antigonid dynasty. 293 BC: The Chinese State of Qin reduced the threat of the State of Wei and the State of Han with the Qin victory in the Battle of Yique. Roman armies penetrate into the heart of the Samnite territory and capture the Samnite cities of Taurasia, Bovianum Vetus and Aufidena. Agathocles, king of Syracuse, assists the Italian Greeks against the Bruttians. Bindusara succeeds his father Chandragupta Maurya as emperor of the Mauryan Empire.
The Epi-Olmec culture forms as a successor civilization to the Olmecs in Mesoamerica. 285 BC: The Pharos of Alexandria is completed. 281 BC: Antiochus I Soter, on the assassination of his father Seleucus becomes emperor of the Seleucid empire. 281 BC: Achaean League founded in Greece. 280 BC: King Pyrrhus of Epirus invades Italy in an attempt to subjugate the Romans and bring Italy under a new empire ruled by himself. 280 BC: Construction of the Colossus of Rhodes is completed. 279 BC: Singidunum and Taurunum, today's Belgrade and Zemun, are founded by Scordisci Celts. After failing to decisively defeat the Romans, Pyrrhus of Epirus withdraws from Italy. Gallic migration to Macedon and Galatia. During the Gallic invasion of Greece, the Macedonian king Ptolemy Keraunos is killed in battle by the forces of the Celtic ruler Bolgios. However, both he and Brennus are driven out of Macedonian territory by Sosthenes of Macedon. 277 BC: in the Battle of Lysimachia, the invasion by Gauls is defeated by Antigonus II of Macedon.
274 BC: the First Syrian War erupts between Antiochus I Soter of the Seleucid dynasty and Ptolemy II Philadelphus of the Ptolemaic dynasty over control of Syria and southern Anatolia. 273 BC – 232 BC: Ashoka the Great ruled the Maurya Empire. 265 BC: Kalinga War takes place between Ashoka the Great and the kingdom of Kalinga. 264 BC: First Punic War breaks out between the Carthaginian Empire and the Roman Republic. 261 BC: Antiochus II Theos, 2nd son, at the death of his father becomes emperor of the Seleucid empire. 260 BC: Battle of Changping between the State of Qin and the State of Zhao in China. 260 BC: Ashoka inscribes the Edicts of Ashoka. 258 BC: An Dương Vương overthrows the Hồng Bàng Dynasty in Viet Nam. 257 BC: Thục Dynasty takes over Vietnam. 246 BC: The death of Antiochus II sparks the Third Syrian War. Expansion of the Achaean League. 241 BC: First Punic War ends in Carthaginian defeat. Rome demands large reparations, annexes Sicily and Corsica. 240 BC: On May 15, Chinese mathematicians observed and recorded the passage of the Halley's Comet.
230 BC: The Chinese Qin State conquers Han. 230 BC: Simuka declares independence from Mauryan rule and establishes the Satavahana Empire. 229 BC: The First Illyrian War ends with a Roman victory. 229 BC: Last tyrants on the Peloponnese abdicate, Argos joins the Achaean League, Athens liberated from Macedonian garrison. 227 BC: The attempted assassination of Ying Zheng, king
The majority of Egyptologists agree on the outline and many details of the chronology of Ancient Egypt. This scholarly consensus is the so-called Conventional Egyptian chronology, which places the beginning of the Old Kingdom in the 27th century BC, the beginning of the Middle Kingdom in the 21st century BC and the beginning of the New Kingdom in the mid-16th century BC. Despite this consensus, disagreements remain within the scholarly community, resulting in variant chronologies diverging by about 300 years for the Early Dynastic Period, up to 30 years in the New Kingdom, a few years in the Late Period. In addition, there are a number of "alternative chronologies" outside scholarly consensus, such as the "New Chronology" proposed in the 1990s, which lowers New Kingdom dates by as much as 350 years, or the "Glasgow Chronology", which lowers New Kingdom dates by as much as 500 years. Scholarly consensus on the general outline of the conventional chronology current in Egyptology has not fluctuated much over the last 100 years.
For the Old Kingdom, consensus fluctuates by as much as a few centuries, but for the Middle and New Kingdoms, it has been stable to within a few decades. This is illustrated by comparing the chronology as given by two Egyptologists, the first writing in 1906, the second in 2000; the disparities between the two sets of dates result from additional discoveries and refined understanding of the still incomplete source evidence. For example, Breasted adds a ruler in the Twentieth dynasty that further research showed did not exist. Following Manetho, Breasted believed all the dynasties were sequential, whereas it is now known that several existed at the same time; these revisions have resulted in a lowering of the conventional chronology by up to 400 years at the beginning of Dynasty I. Forming the backbone of Egyptian chronology are the regnal years as recorded in Ancient Egyptian king lists. Surviving king lists are either comprehensive but have significant gaps in their text, or are textually complete but fail to provide a complete list of rulers for a short period of Egyptian history.
The situation is further complicated by occasional conflicting information on the same regnal period from different versions of the same text. Regnal periods have to be pieced together from inscriptions, which will give a date in the form of the regnal year of the ruling pharaoh, yet this only provides a minimum length of that reign and may or may not include any coregencies with a predecessor or successor. In addition, some Egyptian dynasties overlapped, with different pharaohs ruling in different regions at the same time, rather than serially. Not knowing whether monarchies were simultaneous or sequential results in differing chronological interpretations. Where the total number of regnal years for a given ruler is not known, Egyptologists have identified two indicators to deduce that total number: for the Old Kingdom, the number of cattle censuses. A number of Old Kingdom inscriptions allude to a periodic census of cattle, which experts at first believed took place every second year. However, further research has shown that these censuses were sometimes taken in consecutive years, or after two or more years had passed.
The Sed festival was celebrated on the thirtieth anniversary of a pharaoh's ascension, thus rulers who recorded celebrating one could be assumed to have ruled at least 30 years. However, once again, this may not have been standard practice in all cases. In the early days of Egyptology, the compilation of regnal periods was hampered by a profound biblical bias on the part of Egyptologists; this was most pervasive before the mid 19th century, when Manetho's figures were recognized as conflicting with biblical chronology, based on Old Testament references to Egypt. In the 20th century, such biblical bias has been confined to alternative chronologies outside the scholarly mainstream. A useful way to work around these gaps in knowledge is to find chronological synchronisms, which can lead to a precise date. Over the past decades, a number of these have been found, although they are of varying degrees of usefulness and reliability. Seriation, i.e. archeological sequences. This does not fix a person or event to a specific year, but establishing a sequence of events can provide indirect evidence to provide or support a precise date.
For example, some inscribed stone vessels of the rulers of the first two dynasties were collected and deposited in storage galleries beneath and sealed off when the Step Pyramid of Djoser, a Pharaoh of the Third Dynasty, was built. Another example are blocks from the Old Kingdom bearing the names of several kings, which were reused in the construction of Middle Kingdom pyramid-temples at Lisht in the structures of Amenemhat I; the third pylon at Karnak, built by Amenhotep III contained as "fill" material from the kiosk of Sesostris I, along with various stelae of the Second Intermediate Period and the Eighteenth Dynasty of the New Kingdom. Synchronisms with other chronologies, the most important of these being with the Assyrian and Babylonian chronologies, but synchronisms with the Hittites, ancient Palestine, in the final period with ancient Greece, are used; the earliest such synchronism is in the 18th century