wow. like...yeah. how could a human even. wow.

Humans started recording time and date around 12,000 years ago on semi-permanent stone/clay tablets, so it’s closer to year 12,025 than it is to 2012 or 2025.

Göbekli Tepe is a good example too where the animals etched into the stones were representative of celestial constellations, and the structure itself is aligned with solar movement, so some parts of this megalithic sites are functionally an early calendar.

https://en.wikipedia.org/wiki/G%C3%B6bekli_Tepe