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by torresjrjr 1421 days ago
> Are there other languages with Martian time in their standard library?

Not that I know of, no. Hare's concept of timescales is quite unique in itself already.

> Or maybe with at least some solid third-party implementations?

There exist a few libraries and programs out there, but I'm not familiar with all of them.

For simple Martian time (Javascript):

https://marsclock.com/

NASA has their graphical "Mars24 Sunclock" (Java):

https://www.giss.nasa.gov/tools/mars24/

As for chronologies, I don't know any other implementations of the Martian Business Calendar. There are implementations of the Darian calendar out there.