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Holocene calendar - Wikipedia Holocene calendarFrom Wikipedia, the free encyclopedia"Holocene era" redirects here. For the geological epoch, see Holocene .Calendar era such that 2000 CE is 12000 HE (“Holocene era”)

The Holocene calendar , also known as the Holocene Era or Human Era ( HE ), is a year numbering system that adds exactly 10,000 years to the currently dominant ( AD / BC or CE / BCE ) numbering scheme, placing its first year near the beginning of the Holocene geological epoch and the Neolithic Revolution , when humans transitioned from a hunter-gatherer lifestyle to agriculture and fixed settlements. The current year by the Gregorian calendar, AD 2020, is 12020 HE in the Holocene calendar. The HE scheme was first proposed by Cesare Emiliani in 1993 (11993 HE).

ContentsOverview[ edit ]

Cesare Emiliani's proposal for a calendar reform sought to solve a number of alleged problems with the current Anno Domini era, which number the years of the commonly accepted world calendar. These issues include:

The Anno Domini era is based on the erroneous estimation of the birth year of Jesus. The era places Jesus's birth year in AD 1, but modern scholars have determined that he was likely born in or before 4 BC. Emiliani argued that replacing it with the approximate beginning of the Holocene makes more sense.The birth date of Jesus is a less universally relevant epoch event than the approximate beginning of the Holocene.The years BC/BCE are counted down when moving from past to future, making calculation of time spans difficult.The Anno Domini era has no year zero , with 1 BC followed immediately by AD 1, complicating the calculation of timespans further. This is equally true of the Common Era , its non-religious equivalent.

Instead, HE uses the "beginning of human era" as its epoch , arbitrarily defined as 10,000 BC denoted year 1 HE, so that AD 1 matches 10,001 HE. This is a rough approximation of the start of the current geologic epoch , 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 within this time. Emiliani would later propose that the start of the Holocene be fixed at the same date as the beginning of his proposed era.

Benefits[ edit ]

Human Era proponents claim that it makes for easier geological , archaeological , dendrochronological , anthropological and historical dating, as well as that it bases its epoch on an event more universally relevant than the birth of Jesus . All key dates in human history can then be listed using a simple increasing date scale with smaller dates always occurring before larger dates. Another gain is that the Holocene Era starts before the other calendar eras , so it could be useful for the comparison and conversion of dates from different calendars.

Accuracy[ edit ]

When Emiliani discussed the calendar in a follow-up article in 1994, he mentioned that there was no agreement on the date of the start of the Holocene epoch, with estimates at the time ranging between 12,700 and 10,970 years BP . Since then, scientists have improved their understanding of the Holocene on the evidence of ice cores and can now more accurately date its beginning. A consensus view was formally adopted by the IUGS in 2013, placing its start at 11,700 years before 2000 (9701 BC), about 300 years more recent than the epoch of the Holocene calendar.

Conversion[ edit ]

Conversion from Julian or Gregorian calendar years to the Human Era can be achieved by adding 10,000 to the AD/CE year. The present year, 2020, can be transformed into a Holocene year by adding the digit "1" before it, making it 12,020 HE. Years BC/BCE are converted by subtracting the BC/BCE year number from 10,001.

Comparison of some historic dates in the Gregorian and the Holocene calendar
Gregorian year ISO 8601 Holocene year Event
10001 BC −10000 0 HE Beginning of the Holocene Era
9701 BC −9700 300 HE End of the Pleistocene and beginning of the Holocene epoch
4714 BC −4713 5287 HE Epoch of the Julian day system: Julian day 0 starts at Greenwich noon on January 1, 4713 BC of the proleptic Julian calendar, which is November 24, 4714 BC in the proleptic Gregorian calendar : 10
3761 BC −3760 6240 HE Beginning of the Anno Mundi calendar era in the Hebrew calendar : 11
3102 BC −3101 6899 HE Beginning of the Kali Yuga in Hindu cosmology
2250 BC −2249 7751 HE Beginning of the Meghalayan age, the current and latest of the three stages in the Holocene era .
45 BC −0044 9956 HE Introduction of the Julian calendar
1 BC +0000 10000 HE Year zero at ISO 8601
AD 1 +0001 10001 HE Beginning of the Common Era and Anno Domini , from the estimate by Dionysius of the Incarnation of Jesus
622 , 1  AH +0622 10622 HE Migration of Muhammad from Mecca to Medina ( Hegira ), starting the Islamic calendar
1582 +1582 11582 HE Introduction of the Gregorian calendar : 47
1912 +1912 11912 HE Epoch of the Juche [ citation needed ] and Minguo calendars [ citation needed ]
1950 +1950 11950 HE Epoch of the Before Present dating scheme : 190
1970 +1970 11970 HE Unix Epoch
1993 +1993 11993 HE Publication of the Holocene calendar
2020 +2020 12020 HE Current year
10000 +10000 20000 HE
Emiliani states his proposal "would make the year AD 1 into the year 10,001" but does not mention the Julian or Gregorian calendar. The proposal does not explicitly designate any particular date as the beginning of the era.See also[ edit ] After the Development of Agriculture – calendar system that adds 8000 years to the Common Era. Anno Lucis – calendar system that adds 4000 years to the Common Era. Before Present , the notation most widely used today in scientific literature for dates in prehistory . Calendar reform References[ edit ]^ Emiliani, Cesare (1993). "Correspondence – Calendar Reform" . Nature. 366 (6457): 716. Bibcode : 1993Natur.366..716E . doi : 10.1038/366716b0 . Setting the beginning of the human era at 10,000 BC would date […] the birth of Christ at [25 December] 10,000 ^ Emiliani, Cesare (1994). "Calendar reform for the year 2000". Eos. 75 (19): 218. Bibcode : 1994EOSTr..75..218E . doi : 10.1029/94EO00895 .^ Walker, Mike; Jonsen, Sigfus; Rasmussen, Sune Olander; Popp, Trevor; Steffensen, Jørgen-Peder; Gibbard, Phil; Hoek, Wim; Lowe, John; Andrews, John; Björck, Svante ; Cwynar, Les C.; Hughen, Konrad; Kershaw, Peter; Kromer, Bernd; Litt, Thomas; Lowe, David J.; Nakagawa, Takeshi; Newnham, Rewi; Schwander, Jacob (2009). "Formal definition and dating of the GSSP (Global Stratotype Section and Point) for the base of the Holocene using the Greenland NGRIP ice core, and selected auxiliary records" (PDF). Journal of Quaternary Science. 24 (1): 3–17. Bibcode : 2009JQS....24....3W . doi : 10.1002/jqs.1227 . Archived (PDF) from the original on 2013-11-04.^ Dershowitz, Nachum ; Reingold, Edward M. (2008). Calendrical Calculations (3rd ed.). Cambridge University Press. ISBN   978-0-521-70238-6 .See: Matchett, Freda, "The Puranas", p 139 and Yano, Michio, "Calendar, astrology and astronomy" in Flood, Gavin (Ed) (2003). Blackwell companion to Hinduism. Blackwell Publishing . ISBN   978-0-631-21535-6 .CS1 maint: extra text: authors list ( link ) CS1 maint: ref=harv ( link ) "ICS chart containing the Quaternary and Cambrian GSSPs and new stages (v 2018/07) is now released!" . Retrieved February 6, 2019.Conners, Deanna (September 18, 2018). "Welcome to the Meghalayan age" . Retrieved February 6, 2019.Aisha El-Awady (2002-06-11). "Ramadan and the Lunar Calendar" . Islamonline.net . Retrieved 2006-12-16.Hakim Muhammad Said (1981). "The History of the Islamic Calendar in the Light of the Hijra" . Ahlul Bayt Digital Islamic Library Project . Retrieved 2006-12-16.Currie Lloyd A (2004). "The Remarkable Metrological History of Radiocarbon Dating [II]" (PDF). Journal of Research of the National Institute of Standards and Technology. 109 (2): 185–217. doi : 10.6028/jres.109.013 . PMC   4853109 . PMID   27366605 . Archived from the original (PDF) on 2010-12-06. Retrieved 2018-06-24. "The Open Group Base Specifications Issue 7, Rationale, section 4.16 Seconds Since the Epoch" . The OpenGroup. 2018.Further reading[ edit ]David Ewing Duncan (1999). The Calendar. pp. 331–332. ISBN   978-1-85702-979-6 .Duncan Steel (2000). Marking Time: The Epic Quest to Invent the Perfect Calendar . John Wiley and Sons. pp. 149–151. ISBN   978-0-471-29827-4 .Günther A. Wagner (1998). Age Determination of Young Rocks and Artifacts: Physical and Chemical Clocks in Quaternary Geology and Archeology . Springer. p. 48. ISBN   978-3-540-63436-2 .Videos[ edit ] A New History for Humanity – The Human Era on YouTube , video explaining the Holocene Calendar by Kurzgesagt Human Era Complete on YouTube by Aquarius Risen, video explaining the benefits of the Holocene calendar and how to convert Gregorian to Holocene years Holocene Epoch - Holocene Calendar on YouTube , Overview of historical dates with holocene yearsExternal links[ edit ] Website about the Holocene Calendar , with Timeline and HE/BHE-Converter" News and comment ", Geology Today, 20/3 (2004) 89–96. Timeline of World History Geologic TimeScale Foundation: GSSP Table , engineering.purdue.edu Retrieved from " https://en.wikipedia.org/w/index.php?title=Holocene_calendar&oldid=979694406 " Categories : Archaeological terminology Calendar eras Geochronology Holocene Proposed calendars Jōmon period Specific calendars 1993 in science 10th millennium BC Hidden categories: CS1 maint: extra text: authors list CS1 maint: ref=harv Articles with short description Short description matches Wikidata All articles with unsourced statements Articles with unsourced statements from June 2018 Navigation menuPersonal toolsNot logged in Talk Contributions Create account Log in Namespaces Article Talk VariantsViews Read Edit View history MoreSearch
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