The Holocene calendar, popular term for the Holocene Era count or Human Era count, uses a dating system similar to astronomical year numbering but adds 10,000, placing a zero at the start of the Human Era (HE, the beginning of human civilization) the approximation of the Holocene Epoch (HE, post Ice Age) for easier geological, archaeological, dendrochronological and historical dating. The current Gregorian year can be transformed by simply placing a 1 before it (ie: 12007). The Human Era proposal was first made by Cesare Emiliani in 1993 (11993 HE). [1] [2] Look up he in Wiktionary, the free dictionary. ... The Holocene Epoch is a geologic period that extends from the present back about 10,000 radiocarbon years. ... Astronomical year numbering is based on BCE/CE (or BC/AD) year numbering, but follows normal decimal integer numbering more strictly. ... Central New York City. ... The Holocene epoch is a geological period, which began approximately 11,550 calendar years BP (about 9600 BC) and continues to the present. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ... Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ... Archaeology or sometimes in American English archeology (from the Greek words αρχαίος = ancient and λόγος = word/speech) is the study of human cultures through the recovery, documentation and analysis of material remains, including architecture, artefacts, biofacts, human remains, and landscapes. ... The growth rings of an unknown tree species, at Bristol Zoo, England Pinus taeda Cross section showing annual rings, Cheraw, South Carolina Pine stump showing growth rings Dendrochronology or tree-ring dating is the method of scientific dating based on the analysis of tree-ring growth patterns. ... History is often used as a generic term for information about the past, such as in geologic history of the Earth. When used as the name of a field of study, history refers to the study and interpretation of the record of human societies. ... For the calendar of religious holidays and periods, see liturgical year. ... Cesare Emiliani in the early 1950s when he was doing his pioneering research at the University of Chicago (Photo from the Archives of the Rosenstiel School of Marine and Atmospheric Science, University of Miami) Cesare Emiliani (8 December 1922, Bologna, Italy - 20 July 1995, Palm Beach Gardens, Florida, USA) is... Year 1993 (MCMXCIII) was a common year starting on Friday (link will display full 1993 Gregorian calendar). ...

[edit] Western motivation

Cesare Emiliani's proposal for a calendar reform sought to solve a number of problems with the current Gregorian Calendar, which currently serves as the commonly accepted world calendar. The issues include: Cesare Emiliani in the early 1950s when he was doing his pioneering research at the University of Chicago (Photo from the Archives of the Rosenstiel School of Marine and Atmospheric Science, University of Miami) Cesare Emiliani (8 December 1922, Bologna, Italy - 20 July 1995, Palm Beach Gardens, Florida, USA) is... Calendar reform is any proposed reform of a calendar. ... For the calendar of religious holidays and periods, see liturgical year. ...

• The Gregorian Calendar starts at the presumed year of the birth of Jesus Christ. This Christian aspect of the Gregorian calendar (especially the use of Before Christ and Anno Domini) can be irritating, or even offensive, to non-Christian people. [3]
• Biblical scholarship is virtually unanimous that the birth of Jesus Christ would actually have been a few years prior to AD 1. This makes the calendar inaccurate insofar as Christian dates are concerned.
• There is no year zero as 1 BC is followed immediately by AD 1.
• BC years count down when moving from past to future, thus 44 BC is after 250 BC. This makes calculating date ranges in the Holocene era across the BC/AD boundary more complicated than in the HE.

Instead, HE sets the start, the epoch, of the current era to 10,000 BC. This is a first approximation of the start of the current geologic epoch, not coincidentally called the Holocene (the name means entirely recent). The motivation for this is that human civilization (e.g., the first settlements, agriculture, etc.) is believed to have arisen around this time. All key dates in human history can then be listed using a simple increasing date scale with smaller dates always occurring before larger dates. For the calendar of religious holidays and periods, see liturgical year. ... Wikipedia does not yet have an article with this exact name. ... AD redirects here. ... For the political notion, see Year Zero (political notion). ... In chronology, an epoch (or epochal date, or epochal event) means an instant in time chosen as the origin of a particular era. ... An era is a long period of time with different technical and colloquial meanings, and usages in language. ... A division of geologic time less than a period and greater than an age. ... The Holocene epoch is a geological period, which began approximately 11,550 calendar years BP (about 9600 BC) and continues to the present. ...

[edit] Gregorian conversion

Conversion to Holocene from Gregorian AD dates can be achieved by adding 10,000. BC dates are converted by subtracting the BC year from 10,001.

A useful validity check is that the last digit of BC and HE equivalents must add up to 1 or 11.

For other uses, see Neanderthal (disambiguation). ... For other uses, see Extinction (disambiguation). ... // The Paleolithic is a prehistoric era distinguished by the development of stone tools. ... The magnetosphere shields the surface of the Earth from the charged particles of the solar wind. ... Binomial name P. Brown , 2004 Homo floresiensis (Man of Flores, nicknamed Hobbit) is the name for a possible species in the genus Homo, remarkable for its small body, small brain, and survival until relatively recent times. ... The PPNA Wall of Jericho dates back to approximately 8000 B.C.[1][2] and is thought to be the first wall ever built. ... The Taking of Jericho, by Jean Fouquet Near central Jericho, November 1996 Jericho (Arabic  , Hebrew  , ʼArīḥā; Standard YÉ™riḥo Tiberian YÉ™rîḫô / YÉ™rîḥô; meaning fragrant.[1] Greek Ἱεριχώ) is a town in Palestine, located within the Jericho Governorate, near the Jordan River. ... The ancient civil Egyptian Calendar, known as the Annus Vagus or Wandering Year, had a year that was 365 days long, consisting of 12 months of 30 days each, plus 5 extra days at the end of the year. ... The Pyramid of Djoser, or step pyramid or kbhw-ntrw, was built for the burial of Pharaoh Djoser-Netjerikhet by his Vizier Imhotep. ... This article is about the capital of Greece. ... For other uses, see Rome (disambiguation). ... The Death of Socrates, by Jacques-Louis David (1787) The trial of Socrates refers to the trial and the subsequent execution of the Athenian philosopher Socrates in 399 BC. Socrates was tried and convicted by the courts of democratic Athens on a charge of corrupting the youth and disbelieving in... The History of The Decline and Fall of the Roman Empire, a major literary achievement of Eighteenth Century, was written by the English historian, Edward Gibbon. ... Numerals sans-serif Arabic numerals, known formally as Hindu-Arabic numerals, and also as Indian numerals, Hindu numerals, Western Arabic numerals, European numerals, or Western numerals, are the most common symbolic representation of numbers around the world. ... For other uses, see Europe (disambiguation). ... A millennium (pl. ...

[edit] References

• David Ewing Duncan (1999). The Calendar, 331–332. ISBN 1-85702-979-8. 
• Cesare Emiliani (1993). Calendar reform. Nature, 366:716. 
• Duncan Steel (2000). Marking Time: The Epic Quest to Invent the Perfect Calendar, pp.149-151. 
• Günther A. Wagner (1998). Age Determination of Young Rocks and Artifacts: Physical and Chemical Clocks in Quaternary Geology and Archeology. Springer, p48. 
• Timeline of World History

[edit] See also

• Calendar Era
• 10th millennium BC
• Common Era