That's really good to hear. I'd thoroughly encourage you to run your code against older releases again for a more thorough test. I found some interesting corner cases.

(There may well be some aspects of old data that you don't want to support of course, but that's a different matter. Noda Time 2.0 is currently in sync with zic from 1996 data releases onwards.)

I may add another flag to allow the user to omit the name from each line - I suspect that without the names, the output for Java 8, Joda Time and ICU4J would be close to zic. (It may make more sense to just chop each line at the right position, of course - that's an advantage of your scheme...)

Jon