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BCE and CE or BC and AD are written in upper case, unspaced, without a full stop (period), and separated from the numeric year by a space (5 BC, not 5BC). It is advisable to use a non-breaking space. AD appears before or after a year (AD 106, 106 AD); BCE, CE, and BC always appear after (106 CE, 3700 BCE, 3700 BC).
Traditionally, English follows Latin usage by placing the "AD" abbreviation before the year number, though it is also found after the year. [6] In contrast, "BC" is always placed after the year number (for example: 70 BC but AD 70), which preserves syntactic order. The abbreviation "AD" is also widely used after the number of a century or ...
Thus, the current year is written as 2024 in both notations (or, if further clarity is needed, as 2024 CE, or as AD 2024), and the year that Socrates died is represented as 399 BCE (the same year that is represented by 399 BC in the BC/AD notation). The abbreviations are sometimes written with small capital letters, or with periods (e.g., "B.C ...
"the year of salvation" The year of Christ the Savior, similar to AD. a.u. anno urbis "the year of the city" [2] See AUC: AUC ab Urbe condita, anno Urbis conditae "from the foundation of the City" [1] Refers to the founding of Rome, which occurred in 753 BC according to Livy's count. Used as a reference point in ancient Rome for establishing ...
Astronomical year numbering situates its year 0 with 1 BC, and counts negative years from 2 BC backward (−1 backward), so 100 BC is −99. The human era, also named Holocene era, proposed by Cesare Emiliani adds 10,000 to AD years, so that AD 1 would be the year 10,001. [15] Anno Lucis of Freemasonry adds 4000 years to the AD year.
The year 1 BC/BCE is numbered 0, the year 2 BC is numbered −1, and in general the year n BC/BCE is numbered "−(n − 1)" [1] (a negative number equal to 1 − n). The numbers of AD/CE years are not changed and are written with either no sign or a positive sign; thus in general n AD/CE is simply n or +n. [1]
In geology and paleontology, a distinction sometimes is made between abbreviation "yr" for years and "ya" for years ago, combined with prefixes for thousand, million, or billion. [25] [41] In archaeology, dealing with more recent periods, normally expressed dates, e.g. "10,000 BC", may be used as a more traditional form than Before Present ("BP").
Toggle 1st millennium BC subsection. 1.1 8th century BC. 1.2 7th century BC. 1.3 6th century BC. ... This page is an index to individual articles for years. Years are ...