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Common Era (CE) and Before the Common Era (BCE) are year notations for the Gregorian calendar (and its predecessor, the Julian calendar), the world's most widely used calendar era. Common Era and Before the Common Era are alternatives to the original Anno Domini (AD) and Before Christ (BC) notations used for the same calendar era.
Timeline of knowledge about galaxies, clusters of galaxies, and large-scale structure (964 CE – present) Timeline of knowledge about the interstellar and intergalactic medium (1848 CE – 1990) Timeline of cosmic microwave background astronomy (1896 CE – 2009) Timeline of astronomical maps, catalogs, and surveys (1800 BCE – present ...
The categorisation of the past into discrete, quantified named blocks of time is called periodization. [1] This is a list of such named time periods as defined in various fields of study.
List of years; Timelines of world history; List of timelines; Chronology; See calendar and list of calendars for other groupings of years.; See history, history by period, and periodization for different organizations of historical events.
Since 1856, [40] the alternative abbreviations CE and BCE (sometimes written C.E. and B.C.E.) are sometimes used in place of AD and BC. The "Common/Current Era" ("CE") terminology is often preferred by those who desire a term that does not explicitly make religious references but still uses the same epoch as the anno Domini notation.
The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...
The 1st century was the century spanning AD 1 (represented by the Roman numeral I) through AD 100 (C) according to the Julian calendar.It is often written as the 1st century AD or 1st century CE to distinguish it from the 1st century BC (or BCE) which preceded it.
Imperial period c. 221 BCE – 1911 CE Modern period. Americas North America North America: Lithic/Paleo-Indian (pre 8000 BCE) Archaic (c. 8000 – 1000 BCE) Woodland (1000 BCE to 1000 CE) Mississippian (800 CE to 1600 CE) Mesoamerica Mesoamerica: Lithic/Paleo-Indian (pre 8000 BCE) Archaic (c. 8000 – 1000 BCE) Formative (c. 1000 BCE – 250 CE)