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Astronomical year numbering

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Astronomical year numbering refers to an alternative method of numbering years in relation to the Common Era. In astronomical year numbering, the year 1 BCE becomes 0, the year 2 BCE becomes -1, and in general any given year n BCE becomes -(n-1). Years CE are identical. The system is so named due to its original use by astronomers. (However, note that astronomers mostly find it convenient to use Julian dates.)



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... 2nd century - 3rd century - 4th century Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 ...

 
 
 
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