Interesting.

There would be lag with regards to constellations. The mazzaroth will slowly creep backwards and the heavens will disassociate with their corresponding months.

I can live with that.

The seasons will also not be a constant. Your birthday might by in spring and seven years later in winter. And so forth.

I don't mind. Technology will allow agricultural calenders to function seperatly from lunar.

Effectively it would not matter if everyone on Earth used whatever calender they felt like.

On a bitcoin standard we can coordinate with block time.