The Human Era, also known as the Holocene Era, is a Gregorian-derived calendar proposed by Cesare Emiliani in 1993 CE. It is the representation of time since the beginning of the Holocene and the Neolithic Revolution, when humans started living in fixed agricultural settlements.
The Human Era is an attempt to adapt the Gregorian calendar, which has become widespread enough that it could be considered the default calendar of the world, to an epoch that better encompasses human history. It chooses its epoch based on what may be the most significant moment in our ancient past: the time when humans first created civilization. Conventiently, this occurs roughly 10000 years before 1 AD, allowing for simple math to arrive at the converted date.
As this calendar is only a proposal, there really isn't anything to compare it to historically. It is intrinsically based on and locked to the Gregorian calendar, making it perfectly accurate.