Hubert Feyrer posted a note about time zones, describing how to find what’s defined on a system (all his steps work on DragonFly) and tricks to set it locally.  Along the same lines is this “A literary appreciation of the Olson/Zoneinfo/tz database” that talks about all the historical details. (via)  Of course, I have to mention Sascha Wildner, who has been carefully keeping DragonFly’s time zone data up to date for quite a while.

Update: and again!