OK, so now I've abandoned all hope of finding an Arduino library that does all the heavy lifting for me, I now need to return to my 'roll-your-own' approach. First, I'd like to revisit my 1-Nov question and Zefram's 2-Nov answer (was probably sent 1-Nov from his timezone): -----
I had naively assumed that there was a 1:1 correspondence between region names in zone1970.tab and file names containing zones/rules for those regions.<
There is not. There's an approximate correspondence for most regions, but notably there's no "pacific" file, with most (but not all) Pacific/ zones being in the "australasia" file. ----- So my question now is, how does one know which file to search for zone/rules for any given region/city from zone1970.tab? And please don't answer 'run such-and-such a program from the code area', since I'm not doing this on a desktop machine, but an embedded system without a standard operating system. I need to understand the mechanism/algorithm so I can code my own processes. Thanks. Regards, Daniel