[OC] Wie viel von der menschlichen Zivilisation deckt jedes Kalendersystem ab?

Data source: Calendar start dates from Wikipedia, cross-referenced with academic sources. Human civilization baseline is 12,026 years, based on the Holocene Calendar starting from the Neolithic Revolution at 10,000 BCE.

Tool: HTML, CSS, JavaScript (no libraries)

– Holocene: 10,000 BCE – 100.00%
– Byzantine: 5,509 BCE – 62.66%
– Hebrew: 3,761 BCE – 48.12%
– Chinese: 2,637 BCE – 38.78%
– Julian: 45 BCE – 17.22%
– Gregorian: 1 CE – 16.84%
– Hindu: 78 CE – 16.20%
– Coptic: 284 CE – 14.49%
– Islamic: 622 CE – 11.68%
– Sikh: 1469 CE – 4.63%

Interactive version (hover over bars for more details): https://www.avatarnity.com/gregorian-to-holocene-calendar-converter

The whole Holocene calendar concept sounds like BS. Plenty of people criticize the Gregorian calendar for not having a year zero and for Christ *probably* being born a few years before 1 AD, but the Holocene calendar just took that year and added an arbitrary 10,000 years. The years aren’t actually measuring anything, but the calendar still wants to pretend that it’s super deep.

This is beautiful, hypothetically. It does not mean that people have been using the Byzantine calendar for >50% of Holocene. It is a religious calendar based on a fictional year 0.

The oldest used calendar – to my knowledge – is from Sumer, about 2200 BC. More knowledgeable people please add and correct