[tz] Keeping track of Japanese Era data

[Paul Eggert]

On 03/16/2018 09:43 AM, Florian Weimer wrote:
> Would the tz project be interested in keeping track of the Japanese 
> Era information? 

I'd say it's bit out of scope, as it's a calendrical issue. See:

https://data.iana.org/time-zones/theory.html#calendar