On 2018-01-26 13:32, Robert Elz wrote:
That is why I asked for an example of something real, where the timezone information is actually used for some real practical purpose (just displaying it because we have it does not count.)
Calendar/scheduling apps have to use zones to set and adjust times, and email it in various ?cal formats. I believe those apps also use the ICU/CLDR Windows<->tz zone list for compatibility, and Outlook must also. Thunderbird's Lightning calendar/scheduling extension requires a selection from the tz zone list when selecting alternate times. I expect other unixy calendar and scheduling apps do the same, as they don't have the commercial systems budget for a gazetteer xref or fancy selection UI. Times show as America/Edmonton for me, except when I select another for travel or other purposes. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada