This article is from the Calendars FAQ, by Claus Tondering email@example.com with numerous contributions by others.
I am frequently asked to add a chapter describing the Japanese
calendar, the Ethiopian calendar, the Hindu calendar, etc.
But I have to stop somewhere. I have discovered that the more calendars
I include in the FAQ, the more difficult it becomes to ensure that the
information given is correct. I want to work on the quality rather
than the quantity of information in this document. It is therefore not
likely that other calendars will be added in the near future.