An interesting demonstration of the arbitrariness of ordinal numbers is that Romans didn’t count like we do. They counted sheep like us, but they counted days differently. Our modern calendar goes from the year −1 to the year +1 and you seem to propose going from −0 to +0. But the Roman calendar went from the day −2 to the day +1. Similarly, when the Greeks told them to put in a leap day “every fourth year” they put one in every third year.
An interesting demonstration of the arbitrariness of ordinal numbers is that Romans didn’t count like we do. They counted sheep like us, but they counted days differently. Our modern calendar goes from the year −1 to the year +1 and you seem to propose going from −0 to +0. But the Roman calendar went from the day −2 to the day +1. Similarly, when the Greeks told them to put in a leap day “every fourth year” they put one in every third year.