[tz] How to compute the moment of the next DST change

[random832 at fastmail.us]

On Tue, Apr 2, 2013, at 15:36, Tim Parenti wrote:
> Out of curiosity (and perhaps for the good of the order), is there 
documentation on the format of tz binary files and, if so, where can it 
be found?
> 
> 

It's fully specified in the tzfile.5 manpage - I've also got a mostly
independently (of tzcode's tzset) written "timezone file inspector"
program that I've been meaning to post on the list one of these days,
which may or may not be helpful.