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Use the Olson name of the city in that case. It's not ideal, but it still helps a great deal. (Transliterated when necessary.)
Not sure that would be the best, as I said. Have to run it by a number of country contacts.
Of course, the chances of something sensible like this are, well, zip.]
Not really. The appropriate time for DST changes depends on latitude, and in the Southern Hemisphere it goes the other way.
If you look at the zone data, there is really not much of a correlation between latitude and daylight start/stop. And if you read my example, there were three cases, with a clear indication of whether it was N daylight savings or S daylight savings.
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