Holocene calendar

The Holocene calendar, popular term for the Holocene Era count or Human Era count, uses a dating system similar to but adds 10,000, placing a zero at the start of the Human Era (HE, the beginning of human ) the approximation of the  (HE, post ) for easier, ,  and  dating. The current year can be transformed by simply placing a 1 before it (ie: ). The Human Era proposal was first made by in  HE. 

Western motivation
's proposal for a sought to solve a number of problems with the current, which currently serves as the commonly accepted world calendar. The issues include: Instead, HE sets the start, the, of the current to 10,000 BC. This is a first approximation of the start of the current , not coincidentally called the  (the name means entirely recent). The motivation for this is that human civilization (e.g., the first settlements, agriculture, etc.) is believed to have arisen around this time. All key dates in human history can then be listed using a simple increasing date scale with smaller dates always occurring before larger dates.
 * The starts at the presumed year of the birth of . This Christian aspect of the Gregorian calendar (especially the use of Before Christ and ) can be irritating, or even offensive, to non-Christian people.
 * Biblical scholarship is virtually unanimous that the birth of Jesus Christ would actually have been a few years prior to AD 1. This makes the calendar inaccurate insofar as Christian dates are concerned.
 * There is no as 1 BC is followed immediately by AD 1.
 * BC years count down when moving from past to future, thus 44 BC is after 250 BC. This makes calculating date ranges in the Holocene era across the BC/AD boundary more complicated than in the HE.

Gregorian conversion
Conversion to Holocene from Gregorian AD dates can be achieved by adding 10,000. BC dates are converted by subtracting the BC year from 10,001.

A useful validity check is that the last digit of BC and HE equivalents must add up to 1 or 11.