The YouTube Channel Kurzgesagt has proposed a calendar based on the 'Human Era’ (HE) instead of before/after christ format.
It’s based on the first monument of large-scale human cooperation (building a temple in modern-day turkey) and is quite elegant in my opinion. It ‘simply’ adds 10.000 years to the calendar we’re all already used to. :)
Memo: the publishers Wiley, Penguin Random House, Harper Collins and Hachette sued the Internet Archive for over $600m.
https://en.m.wikipedia.org/wiki/Hachette_v._Internet_Archive