What historical event would mark year 0 on a secular calendar?
What would be the event that marked the first year of a secular calendar, that is, an event in no way related to religion. Keep in mind practicality, for the simple reason that a year will some 11 digits that is based on the formation of Earth, or the Big Bang, would be very tedious, and not necessary.
Observing members:
0
Composing members: 0
Composing members: 0