[tz] Getting offset for each time zones

[Guy Harris]

On May 18, 2016, at 12:31 PM, Guy Harris <guy at alum.mit.edu> wrote:

> ...but Apple have done the best job I've seen so far for general-purpose OSes.  ("General-purpose OSes" meaning "some small embedded device probably can't do as much fancy UI stuff".)
> 
> The OS X time zone selector combines:

	...

> iOS has the first and third of those (although it just calls the auto-select feature "Set Automatically").

...and, unless I've missed something, *no* tzids *anywhere* in the time zone selector UI, so nobody's going to be complaining that the big city they're living in isn't the city mentioned in the tzid.