[tz] Fwd: Bulletin C number 57

Paul Eggert eggert at cs.ucla.edu
Tue Jan 8 06:39:28 UTC 2019

Brian Inglis wrote:
> suggests CC-PDM, CC0, ODC-PDDL, OGL, or EUPL may be suitable depending on which
> explicit permissions are required and whether obligations should be applied.
> Which of these are preferred by the masintainer?

The intent of the tzdb (see Internet RFC 6657 section 7) is that it be in the 
public domain, so CC-PDM sounds like it's the most-appropriate. CC-BY 4.0 places 
more requirements than what RFC 6657 would allow, so it would be more problematic.

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