In dating systems, BC is the abbreviation for "Before Christ", or "Before Common", [era] as some re-label things in a superficially politically-correct sense, referring to the years prior to the fictionalized birth of the religio-mythology conceptualized person Jesus Christ, aka "Osiris-Horus Anointed".
Alternatives | Neutral
The following, using Greek philosopher Aristotle is an example, are Hmolpedia-introduced scientifically-neutral dating reference frame alternatives to the BC/AD religio-mythology based dating system:
|Before Christ (BC) / Anno Domini (AD)||Before Printing (BP) / Printing Era (PE)||Before Newton (BN) / After Newton (AN)||Before Goethe (BG) /|
After Goethe (AG)
|Aristotle||(384-322 BC)|| (1834-1722 BP)||(2026-1964 BN)||(2134-2072 BG)|
|Einstein|| (1879-1955 AD)||(429-505 BP)||(129-205 AG)|
Note, as of 2016, the issues connected to the Julian calendar system (older calendar) / Gregorian calendar system (modern calendar) Newton-birth dating system (modern era) issue (1642/1643) leads to more technical issues than the printing era (1450 invention) or Goethean calendar, the latter of which has been employed as a working model.
Greek-born Roman historian Eusebius (c.263-339AD), e.g., in his Chronicle used an era beginning with the birth of religio-mythology character Abraham, aka "Father Ra born of Nun", i.e. Ab-ra-ham, the patriarch of the Anunian theologies (Ab-ra-ham-ic theology and B-ra-hma-ic theology), dated in 2016 BC (AD 1 = 2017 Anno Abrahami); hence, subsequently, counting the years before the fictional birth of Abraham, supposedly, as BA or "Before Abraham", thus dating the start of the world, 5500 BC or 4000 BC, depending on source (Ѻ), in Biblical chronology, to the years 3484 BA (Before Abraham) or 1984 BA, the year when God created the world in seven days, as Eusebius would have conceptualized things. 
The following are relevant quotes:
“Since, we are looking at the history of God from the Jewish and Muslim as well as the Christian perspective, the terms ‘BC’ and ‘AD’, which are conventionally used in the West, are not appropriate.”
— Karen Armstrong (1993) (542 PE), A History of God 
1. Armstrong, Karen. (1993). A History of God (Introduction, note pg. xxiii). Ballantine Books.
2. Gutschmid, Alfred. (1889). Klein Schriften (pg. 433). F. Ruehl.
● BC – Wikipedia.