[lovecg]

I had a thought once that no one ever lived in year one except retroactively (with some exceptions like the French Revolution). By the time a new system is adopted, it’s already been a while since the defining event.

[kergonath]

> with some exceptions like the French Revolution

It was also the case for the French Revolution. The republican calendar was established in year II. Nobody living in year I knew it at the time.

[merelysounds]

Another possible exception: systems where year one happens repeatedly, e.g. Japanese era calendar scheme.