Hello, You might find this high level overview also useful: http://java.sun.com/javase/timezones/tzdata_versions.html Regards, Gunther Nathan Stratton Treadway wrote:
On Thu, Mar 26, 2009 at 16:22:41 -0400, Olson, Arthur David (NIH/NCI) [E] wrote:
Where can I find revision history of changes that has happened in TZ database across given two versions? For example, I would like to know what all changes happened from TZ version 2007g to 2008c. I will appreciate any pointers/help regarding this.
The changelog for the Ubuntu "tzdata" package includes some mentions of the rule changes that are part of various versions of the package, going back through 2006 (when the package was first created).
https://launchpad.net/ubuntu/karmic/+source/tzdata/+changelog
The descriptions of rule changes that were made in the upstream database are mixed in with descriptions of Ubuntu-specific rule patches as well as discussions of other (non-timezone-rule) changes made to the package, but it's still probably easier to find changes of interest in this document than by scanning through the whole of the tz mailing list archives or trying to "diff" the database files. (Search the page for phrases such as "new upstream" and "new timezone data".)
(The link above will only show the latest version of the changelog while "karmic" release is still active; eventually you will need to go back to the "overview" page at https://launchpad.net/ubuntu/+source/tzdata/ and follow the links to package versions that are found in newer releases of Ubuntu.)
This search for a revision history comes up on the tz list periodically, and personally I have also had occasions where I wished there was some single document that I could just skim through to identify exactly which release of the rules database include some particular change.
If ADO (or whoever) were interested in maintaining this as a "changelog" file within the tzdata distribution, I'd be willing to compile a list of changes from tzdata releases over the past year or two, to get the ball rolling.
Alternatively, it might work well to do a community-maintained release history wiki page, if there were a suitable wiki somewhere to host it.
Nathan
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