On Tue, Jun 07, 2016 at 12:18:21PM +0300, Marko Mäkelä wrote:
http://wiki.openstreetmap.org/wiki/Key:timezone seems to agree with my
reasoning above. It also refers to a changeset that introduced time
zones for the Australian states. However, all those modified objects
have since then been removed, and the new Australian state relations do
not seem to include timezone=*.
Sorry, I was looking at a way, not at relations. At least
http://www.openstreetmap.org/relation/2316595 (name=Queensland) is
tagged with timezone=Australia/Brisbane.
There is also an algorithmic problem of extracting boundaries of tagged
areas. Even if all the administrative areas are tagged with timezone=*,
we would want to derive the boundaries, so that only those
administrative boundaries that also represent a time zone boundary
(with different values on each side) will be displayed.
Maybe the mkgmap bounds.zip could be extended with this information?
Best regards,
Marko
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