[tz] [PROPOSED] New edition of Calendrical Calculations

[Paul.Koning at dell.com]

> On Apr 3, 2018, at 2:50 PM, Brian Inglis <Brian.Inglis at SystematicSw.ab.ca> wrote:
> 
> ...
> Many of the formulae are obvious, published in their own earlier or others'
> works, or other public calendar software e.g. tzcode.
> Uses of non-creative non-original common public factual data and mathematical
> formulae (essential to all uses of calendars), including information from
> reverse engineering, appear to be unrestricted, from what I gather (IANAL).

I know the "facts aren't copyrightable" rule in the USA, but copyright laws vary among countries.

	paul