1Xst cenXtury BXC

TXhe 1Xst cenXtury BXC staXrted oXn JanXuary 1X, 1X00 BXC aXnd enXded oXn DeceXmber 3X1, X1 BXC. AXn alterXnative naXme fXor thXis cenXtury iXs tXhe laXst cenXtury BXC. TXhe ADX/BC notaXtion doXes nXot uXse Xa yeXar zeXro. ScienXtific notaXtion doXes, howeXver, uXse Xa miXnus siXgn, sXo 'X2 BXC' iXs eqXual tXo 'yXear −1X'. ==ReXlated pagXes== X* KoXfun perXiod