Chronology (from Latin chronologia, from Ancient Greek χρόνος, chrónos, "time"; and -λογία, -logia) is the science of arranging events in their order of occurrence in time. Consider, for example, the use of a timeline or sequence of events. It is also "the determination of the actual temporal sequence of past events".
Chronology is the science of locating historical events in time. It relies upon chronometry, which is also known as timekeeping, and historiography, which examines the writing of history and the use of historical methods. Radiocarbon dating estimates the age of formerly living things by measuring the proportion of carbon-14 isotope in their carbon content. Dendrochronology estimates the age of trees by correlation of the various growth rings in their wood to known year-by-year reference sequences in the region to reflect year-to-year climatic variation. Dendrochronology is used in turn as a calibration reference for radiocarbon dating curves.
The familiar terms calendar and era (within the meaning of a coherent system of numbered calendar years) concern two complementary fundamental concepts of chronology. For example, during eight centuries the calendar belonging to the Christian era, which era was taken in use in the 8th century by Bede, was the Julian calendar, but after the year 1582 it was the Gregorian calendar. Dionysius Exiguus (about the year 500) was the founder of that era, which is nowadays the most widespread dating system on earth. An epoch is the date (year usually) when an era begins.
Ab Urbe condita is Latin for "from the founding of the City (Rome)", traditionally set in 753 BC. It was used to identify the Roman year by a few Roman historians. Modern historians use it much more frequently than the Romans themselves did; the dominant method of identifying Roman years was to name the two consuls who held office that year. Before the advent of the modern critical edition of historical Roman works, AUC was indiscriminately added to them by earlier editors, making it appear more widely used than it actually was.
It was used systematically for the first time only about the year 400, by the Iberian historian Orosius. Pope Boniface IV, in about the year 600, seems to have been the first who made a connection between these this era and Anno Domini. (AD 1 = AUC 754.)
Dionysius Exiguus’ Anno Domini era (which contains only calendar years AD) was extended by Bede to the complete Christian era (which contains, in addition all calendar years BC, but no year zero). Ten centuries after Bede, the French astronomers Philippe de la Hire (in the year 1702) and Jacques Cassini (in the year 1740), purely to simplify certain calculations, put the Julian Dating System (proposed in the year 1583 by Joseph Scaliger) and with it an astronomical era into use, which contains a leap year zero, which precedes the year 1 (AD).
In the absence of written history, with its chronicles and king lists, late 19th century archaeologists found that they could develop relative chronologies based on pottery techniques and styles. In the field of Egyptology, William Flinders Petrie pioneered sequence dating to penetrate pre-dynastic Neolithic times, using groups of contemporary artefacts deposited together at a single time in graves and working backwards methodically from the earliest historical phases of Egypt. This method of dating is known as seriation.
Known wares discovered at strata in sometimes quite distant sites, the product of trade, helped extend the network of chronologies. Some cultures have retained the name applied to them in reference to characteristic forms, for lack of an idea of what they called themselves: "The Beaker People" in northern Europe during the 3rd millennium BCE, for example. The study of the means of placing pottery and other cultural artifacts into some kind of order proceeds in two phases, classification and typology: Classification creates categories for the purposes of description, and typology seeks to identify and analyse changes that allow artifacts to be placed into sequences.
Laboratory techniques developed particularly after mid-20th century helped constantly revise and refine the chronologies developed for specific cultural areas. Unrelated dating methods help reinforce a chronology, an axiom of corroborative evidence. Ideally, archaeological materials used for dating a site should complement each other and provide a means of cross-checking. Conclusions drawn from just one unsupported technique are usually regarded as unreliable.
The fundamental problem of chronology is to synchronize events. By synchronizing an event it becomes possible to relate it to the current time and to compare the event to other events. Among historians, a typical need to is to synchronize the reigns of kings and leaders in order to relate the history of one country or region to that of another. For example, the Chronicon of Eusebius (325 A.D.) is one of the major works of historical synchronism. This work has two sections. The first contains narrative chronicles of nine different kingdoms: Chaldean, Assyrian, Median, Lydian, Persian, Hebrew, Greek, Peloponnesian, Asian, and Roman. The second part is a long table synchronizing the events from each of the nine kingdoms in parallel columns. The adjacent image shows two pages from the second section.
By comparing the parallel columns, the reader can determine which events were contemporaneous, or how many years separated two different events. To place all the events on the same time scale, Eusebius used an Anno Mundi (A.M.) era, meaning that events were dated from the supposed beginning of the world as computed from the Book of Genesis in the Hebrew Pentateuch. According to the computation Eusebius used, this occurred in 5199 B.C. The Chronicon of Eusebius was widely used in the medieval world to establish the dates and times of historical events. Subsequent chronographers, such as George Syncellus (died circa 811), analyzed and elaborated on the Chronicon by comparing with other chronologies. The last great chronographer was Joseph Justus Scaliger (1540-1609) who reconstructed the lost Chronicon and synchronized all of ancient history in his two major works, De emendatione temporum (1583) and Thesaurus temporum (1606). Much of modern historical datings and chronology of the ancient world ultimately derives from these two works. Scaliger invented the concept of the Julian Day which is still used as the standard unified scale of time for both historians and astronomers.
In addition to the literary methods of synchronism used by traditional chronographers such as Eusebius, Syncellus and Scaliger, it is possible to synchronize events by archaeological or astronomical means. For example, the Eclipse of Thales, described in the first book of Herodotus can potentially be used to date the Lydian War because the eclipse took place during the middle of an important battle in that war. Likewise, various eclipses and other astronomical events described in ancient records can be used to astronomically synchronize historical events. Another method to synchronize events is the use of archaeological findings, such as pottery, to do sequence dating.
Aspects and examples of non-chronological story-telling:
Ab urbe condita (Latin pronunciation: [ab ˈʊrbɛ ˈkɔndɪtaː]), or Anno urbis conditæ (Latin pronunciation: [ˈannoː ˈʊrbɪs ˈkɔndɪtae̯]), often abbreviated as AUC in either case, is a convention that was used in antiquity and by classical historians to refer to a given year in Ancient Rome. Ab urbe condita literally means "from the founding of the City", while anno urbis conditæ means "in the year since the City's founding". Therefore, the traditional year of the foundation of Rome, 753 BC, would be written AUC 1, while AD 1 would be AUC 754. The foundation of the Empire in 27 BC would be AUC 727.
Usage of the term was more common during the Renaissance, when editors sometimes added AUC to Roman manuscripts they published, giving the false impression that the convention was commonly used in antiquity. In reality, the dominant method of identifying years in Roman times was to name the two consuls who held office that year. In late antiquity, regnal years were also in use, as was the Diocletian era in Roman Egypt after AD 293, and in the Byzantine Empire after AD 537, following a decree by Justinian.Anno Domini
The terms anno Domini (AD) and before Christ (BC) are used to label or number years in the Julian and Gregorian calendars. The term anno Domini is Medieval Latin and means "in the year of the Lord", but is often presented using "our Lord" instead of "the Lord", taken from the full original phrase "anno Domini nostri Jesu Christi", which translates to "in the year of our Lord Jesus Christ".
This calendar era is based on the traditionally reckoned year of the conception or birth of Jesus of Nazareth, with AD counting years from the start of this epoch, and BC denoting years before the start of the era. There is no year zero in this scheme, so the year AD 1 immediately follows the year 1 BC. This dating system was devised in 525 by Dionysius Exiguus of Scythia Minor, but was not widely used until after 800.The Gregorian calendar is the most widely used calendar in the world today. For decades, it has been the unofficial global standard, adopted in the pragmatic interests of international communication, transportation, and commercial integration, and recognized by international institutions such as the United Nations.Traditionally, English followed Latin usage by placing the "AD" abbreviation before the year number. However, BC is placed after the year number (for example: AD 2019, but 68 BC), which also preserves syntactic order. The abbreviation is also widely used after the number of a century or millennium, as in "fourth century AD" or "second millennium AD" (although conservative usage formerly rejected such expressions). Because BC is the English abbreviation for Before Christ, it is sometimes incorrectly concluded that AD means After Death, i.e., after the death of Jesus. However, this would mean that the approximate 33 years commonly associated with the life of Jesus would neither be included in the BC nor the AD time scales.Terminology that is viewed by some as being more neutral and inclusive of non-Christian people is to call this the Current or Common Era (abbreviated as CE), with the preceding years referred to as Before the Common or Current Era (BCE). Astronomical year numbering and ISO 8601 avoid words or abbreviations related to Christianity, but use the same numbers for AD years.Black Panther Party
The Black Panther Party (BPP), originally the Black Panther Party for Self-Defense, was a political organization founded by Bobby Seale and Huey Newton in October 1966 in Oakland, California. The party was active in the United States from 1966 until 1982, with chapters in numerous major cities, and international chapters operating in the United Kingdom in the early 1970s, and in Algeria from 1969 until 1972.At its inception on October 15, 1966, the Black Panther Party's core practice was its armed citizens' patrols to monitor the behavior of officers of the Oakland Police Department and challenge police brutality in the city. In 1969, community social programs became a core activity of party members. The Black Panther Party instituted a variety of community social programs, most extensively the Free Breakfast for Children Programs, to address issues like food injustice, and community health clinics for education and treatment of diseases including sickle cell anemia, tuberculosis, and later HIV/AIDS. The party enrolled the most members and had the most influence in the Oakland-San Francisco Bay Area, New York, Chicago, Los Angeles, Seattle, and Philadelphia. There were active chapters in many prisons, at a time when an increasing number of young African-American men were being incarcerated.
Federal Bureau of Investigation Director J. Edgar Hoover described the party in 1969 as "the greatest threat to the internal security of the country." He developed and supervised an extensive counterintelligence program (COINTELPRO) of surveillance, infiltration, perjury, police harassment, and many other tactics designed to undermine Panther leadership, incriminate party members, discredit and criminalize the Party, and drain the organization of resources and manpower. The program was also accused of assassinating Black Panther members, including Fred Hampton.Black Panther Party members were involved in many fatal firefights with police: Huey Newton allegedly killed officer John Frey in 1967, and Eldridge Cleaver led an ambush in 1968 of Oakland police officers, in which two officers were wounded and Panther Bobby Hutton was killed. The party suffered many internal conflicts, resulting in the murders of Alex Rackley and Betty Van Patter.
Government oppression initially contributed to the party's growth, as killings and arrests of Panthers increased its support among African Americans and on the broad political left. Both groups valued the Panthers as a powerful force opposed to de facto segregation and the military draft. Black Panther Party membership reached a peak in 1970, with offices in 68 cities and thousands of members; it began to decline over the following decade. After the leaders and members were vilified by the mainstream press, public support for the party waned, and the group became more isolated. In-fighting among Party leadership, caused largely by the FBI's COINTELPRO operation, led to expulsions and defections that decimated the membership. Popular support for the Party declined further after reports appeared detailing the group's involvement in illegal activities, such as drug dealing and extortion schemes directed against Oakland merchants. By 1972 most Panther activity centered on the national headquarters and a school in Oakland, where the party continued to influence local politics. Though under constant police surveillance, the Chicago chapter also remained active and maintained their community programs until 1974. The Seattle chapter lasted longer than most, with a breakfast program and medical clinics that continued even after the chapter disbanded in 1977. Party contractions continued throughout the 1970s, and by 1980, the Black Panther Party had just 27 members.The history of the Black Panther Party is controversial. Scholars have characterized the Black Panther Party as the most influential black movement organization of the late 1960s, and "the strongest link between the domestic Black Liberation Struggle and global opponents of American imperialism". Other commentators have described the Party as more criminal than political, characterized by "defiant posturing over substance".Chronology of Jesus
A chronology of Jesus aims to establish a timeline for the events of the life of Jesus. Scholars have correlated Jewish and Greco-Roman documents and astronomical calendars with the New Testament accounts to estimate dates for the major events in Jesus's life.
Two main approaches have been used to estimate the year of the birth of Jesus: one based on the accounts in the Gospels of his birth with reference to King Herod's reign, and the other by subtracting his stated age of "about 30 years" when he began preaching. Most scholars, on this basis, assume a date of birth between 6 and 4 BC.Three details have been used to estimate the year when Jesus began preaching: a mention of his age of "about 30 years" during "the fifteenth year" of the reign of Tiberius Caesar, another relating to the date of the building of the Temple in Jerusalem, and yet another concerning the death of John the Baptist. Hence, scholars estimate that Jesus began preaching and gathering followers around AD 28–29. According to the three synoptic gospels Jesus continued preaching for at least one year, and according to John the Evangelist for three years.Five methods have been used to estimate the date of the crucifixion of Jesus. One uses non-Christian sources such as Josephus and Tacitus. Another works backwards from the historically well-established trial of the Apostle Paul by the Roman proconsul Gallio in Corinth in AD 51/52 to estimate the date of Paul's conversion. Both methods result in AD 36 as an upper bound to the crucifixion. Thus, scholars generally agree that Jesus was crucified between AD 30 and AD 36. Isaac Newton's astronomical method calculates those ancient Passovers (always defined by a full moon) which are preceded by a Friday, as specified by all four Gospels; this leaves two potential crucifixion dates, 7 April AD 30 and 3 April AD 33. In the lunar eclipse method, the Apostle Peter's statement that the moon turned to blood at the crucifixion (Acts of the Apostles 2:14-21) is taken to refer to the lunar eclipse of 3 April AD 33; although astronomers are discussing whether the eclipse was visible as far west as Jerusalem. Recent astronomical research uses the contrast between the synoptic date of Jesus' last Passover on the one hand with John's date of the subsequent "Jewish Passover" on the other hand, to propose Jesus' Last Supper to have been on Wednesday, 1 April AD 33 and the crucifixion on Friday 3 April AD 33 and the Resurrection two days later.Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology. The earliest stages of the universe's existence are estimated as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.Circa
Circa (from Latin, meaning 'around, about') – frequently abbreviated c., ca. or ca and less frequently circ. or cca. – signifies "approximately" in several European languages and as a loanword in English, usually in reference to a date. Circa is widely used in historical writing when the dates of events are not accurately known.
When used in date ranges, circa is applied before each approximate date, while dates without circa immediately preceding them are generally assumed to be known with certainty.
1732–1799: Both years are known precisely.
c. 1732 – 1799: The beginning year is approximate; the end year is known precisely.
1732 – c. 1799: The beginning year is known precisely ; the end year is approximate.
c. 1732 – c. 1799: Both years are approximate.Common Era
Common Era or Current Era (CE) is one of the notation systems for the world's most widely used calendar era. BCE (Before the Common Era or Before the Current Era) is the era before CE. BCE and CE are alternatives to the Dionysian BC and AD system respectively. The Dionysian era distinguishes eras using AD (anno Domini, "[the] year of [the] Lord") and BC ("before Christ"). Since the two notation systems are numerically equivalent, "2019 CE" corresponds to "AD 2019" and "400 BCE" corresponds to "400 BC". Both notations refer to the Gregorian calendar (and its predecessor, the Julian calendar). The year-numbering system utilized by the Gregorian calendar is used throughout the world today, and is an international standard for civil calendars.The expression has been traced back to 1615, when it first appeared in a book by Johannes Kepler as the Latin usage annus aerae nostrae vulgaris, and to 1635 in English as "Vulgar Era". The term "Common Era" can be found in English as early as 1708, and became more widely used in the mid-19th century by Jewish religious scholars. In the later 20th century, the use of CE and BCE was popularized in academic and scientific publications, and more generally by authors and publishers wishing to emphasize sensitivity to non-Christians, by not explicitly referencing Jesus as "Christ" and Dominus ("Lord") through use of the abbreviation "AD".Dynasties in Chinese history
The following is a chronology of the dynasties in the history of China from 21st century BC.Egyptian chronology
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, and 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" (proposed 1978–1982), which lowers New Kingdom dates by as much as 500 years.Geochronology
Geochronology is the science of determining the age of rocks, fossils, and sediments using signatures inherent in the rocks themselves. Absolute geochronology can be accomplished through radioactive isotopes, whereas relative geochronology is provided by tools such as palaeomagnetism and stable isotope ratios. By combining multiple geochronological (and biostratigraphic) indicators the precision of the recovered age can be improved.
Geochronology is different in application from biostratigraphy, which is the science of assigning sedimentary rocks to a known geological period via describing, cataloging and comparing fossil floral and faunal assemblages. Biostratigraphy does not directly provide an absolute age determination of a rock, but merely places it within an interval of time at which that fossil assemblage is known to have coexisted. Both disciplines work together hand in hand, however, to the point where they share the same system of naming rock layers and the time spans utilized to classify layers within a stratum.
The science of geochronology is the prime tool used in the discipline of chronostratigraphy, which attempts to derive absolute age dates for all fossil assemblages and determine the geologic history of the Earth and extraterrestrial bodies.List of pharaohs
The pharaohs were rulers of Ancient Egypt dating from the unification of Upper and Lower Egypt during the Early Dynastic Period by Narmer approximately 3100 BC. Although the specific term "Pharaoh" was not used by their contemporaries until the rule of Merneptah of the 19th dynasty, c. 1200 BC, the style of titulature of the rulers of Egypt remained relatively constant, initially featuring a Horus name, a Sedge and Bee (nswt-bjtj) name and a Two Ladies (nbtj) name, with the additional Golden Horus, nomen and prenomen titles being added successively during later dynasties.
Egypt remained continually governed by native pharaohs for approximately 2500 years until it was conquered by the Kingdom of Kush in 656 BC, whose rulers adopted the traditional pharaonic titulature for themselves. Following the Kushite conquest, Egypt would first see another period of independent native rule before being conquered by the Achaemenid Empire, whose rulers also adopted the title of "Pharaoh". The last native Pharaoh of Egypt was Nectanebo II, who was Pharaoh before the Achaemenids conquered Egypt for a second time.
Achaemenid rule over Egypt came to an end through the conquests of Alexander the Great in 332 BC, after which it was ruled by the Hellenic Pharaohs of the Ptolemaic Dynasty. Their rule, and the independence of Egypt, came to an end when Egypt became a province of Rome in 30 BC. Augustus and subsequent Roman Emperors were styled as Pharaohs when in Egypt up until the reign of Maximinus Daia in 314 AD.
The dates given in this list of pharaohs are approximate. They are based primarily on the conventional chronology of Ancient Egypt, mostly based on the Digital Egypt for Universities database developed by the Petrie Museum of Egyptian Archaeology, but alternative dates taken from other authorities may be indicated separately.Lists of Korean films
List of Korean films may refer to:
List of Korean films (Pre 1948), a chronology of the films of United Korea before the country division
Lists of South Korean films, a chronology of the films produced in the country of South Korea (post September 1948)
List of North Korean films, a chronology of the films produced in the country of North Korean (post September 1948)
List of highest-grossing films in South Korea, by ticket salesMillennium
A millennium (plural millennia or millenniums) is a period equal to 1000 years, sometimes called a kiloyear. It derives from the Latin mille, thousand, and annus, year. It is often, but not always, related to a particular dating system.
Sometimes, it is used specifically for periods of a thousand years that begin at the starting point (initial reference point) of the calendar in consideration (typically the year "1"), or in later years that are whole number multiples of a thousand years after it. The term can also refer to an interval of time beginning on any date. Frequently in the latter case (and sometimes also in the former) it may have religious or theological implications (see millenarianism).Phoenicia
Phoenicia (; from the Ancient Greek: Φοινίκη, Phoiníkē) was a thalassocratic, ancient Semitic-speaking Mediterranean civilization that originated in the Levant, specifically Lebanon, in the west of the Fertile Crescent. Scholars generally agree that it was centered on the coastal areas of Lebanon and included northern Israel, and southern Syria reaching as far north as Arwad, but there is some dispute as to how far south it went, the furthest suggested area being Ashkelon. Its colonies later reached the Western Mediterranean, such as Cádiz in Spain and most notably Carthage in North Africa, and even the Atlantic Ocean. The civilization spread across the Mediterranean between 1500 BC and 300 BC.
Phoenicia is an ancient Greek term used to refer to the major export of the region, cloth dyed Tyrian purple from the Murex mollusc, and referred to the major Canaanite port towns; not corresponding precisely to Phoenician culture as a whole as it would have been understood natively. Their civilization was organized in city-states, similar to those of ancient Greece,, centered in modern Lebanon, of which the most notable cities were Tyre, Sidon, Arwad, Berytus, Byblos, and Carthage. Each city-state was a politically independent unit, and it is uncertain to what extent the Phoenicians viewed themselves as a single nationality. In terms of archaeology, language, lifestyle, and religion there was little to set the Phoenicians apart as markedly different from other residents of the Levant, such as their close relatives and neighbors, the Israelites.Around 1050 BC, a Phoenician alphabet was used for the writing of Phoenician. It became one of the most widely used writing systems, spread by Phoenician merchants across the Mediterranean world, where it evolved and was assimilated by many other cultures, including the Roman alphabet used by Western civilization today.Prehistory
Human prehistory is the period between the use of the first stone tools c. 3.3 million years ago by hominins and the invention of writing systems. The earliest writing systems appeared c. 5,300 years ago, but it took thousands of years for writing to be widely adopted, and it was not used in some human cultures until the 19th century or even until the present. The end of prehistory therefore came at very different dates in different places, and the term is less often used in discussing societies where prehistory ended relatively recently.
Sumer in Mesopotamia, the Indus valley civilization, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records; this took place already during the early Bronze Age. Neighboring civilizations were the first to follow. Most other civilizations reached the end of prehistory during the Iron Age. The three-age system of division of prehistory into the Stone Age, followed by the Bronze Age and Iron Age, remains in use for much of Eurasia and North Africa, but is not generally used in those parts of the world where the working of hard metals arrived abruptly with contact with Eurasian cultures, such as the Americas, Oceania, Australasia and much of Sub-Saharan Africa. These areas also, with some exceptions in Pre-Columbian civilizations in the Americas, did not develop complex writing systems before the arrival of Eurasians, and their prehistory reaches into relatively recent periods; for example 1788 is usually taken as the end of the prehistory of Australia.
The period when a culture is written about by others, but has not developed its own writing is often known as the protohistory of the culture. By definition, there are no written records from human prehistory, so dating of prehistoric materials is crucial. Clear techniques for dating were not well-developed until the 19th century.This article is concerned with human prehistory, the time since behaviorally and anatomically modern humans first appeared until the beginning of recorded history. Earlier periods are also called "prehistoric"; there are separate articles for the overall history of the Earth and the history of life before humans.Puranic chronology
The Puranic chronology gives a timeline of Hindu history according to the Hindu scriptures. Two central dates are the Mahabharata War, which according to this chronology happened at 3138 BCE, and the start of the Kali Yuga, which according to this chronology started at 3102 BCE. The Puranic chronology is referred to by proponents of Indigenous Aryans to propose an earlier dating of the Vedic period, and the spread of Indo-European languages out of India.Timeline
A timeline is a display of a list of events in chronological order. It is typically a graphic design showing a long bar labelled with dates paralleling it, and usually contemporaneous events; a Gantt chart is a form of timeline used in project management.
Timelines can use any suitable scale representing time, suiting the subject and data; many use a linear scale, in which a unit of distance is equal to a set amount of time. This timescale is dependent on the events in the timeline. A timeline of evolution can be over millions of years, whereas a timeline for the day of the September 11 attacks can take place over minutes, and that of an explosion over milliseconds. While many timelines use a linear timescale -- especially where very large or small timespans are relevant -- logarithmic timelines entail a logarithmic scale of time; some "hurry up and wait" chronologies are depicted with zoom lens metaphors.Timeline of Islamic history
This timeline of Islamic history relates the Gregorian and Islamic calendars in the history of Islam. This timeline starts with the lifetime of Muhammad, which is believed by non-Muslims to be when Islam started, though not by Muslims.Timeline of World War II
This is a list of timelines of events over the period of World War II, as well as the prelude to the war.
|Philosophy of time|
and use of time