On 10/30/13 3:08 PM, ned+ietf@xxxxxxxxxxxxxxxxx wrote: >> On Wed, Oct 30, 2013 at 09:25:59AM +0100, >> Carsten Bormann <cabo@xxxxxxx> wrote >> a message of 16 lines which said: >>> I don’t know about “only UTC" for events that are also visited >>> locally, but giving the UTC time as well would be a good idea. >> My experience with international organizations is that, when you >> indicate the time in two zones, there is often a discrepancy. With >> only one zone, there is no doubt about the real value. > And my experience is that regardless of what sort of organization you're > dealing with, if you ask them to convert a time for a future event that is > being held in a particular physical location to some other time zone, they > won't apply time zone rules correctly and the only announced time will be > wrong. > > Which argues for including the local time when the event will take place. If > you want to mandate that the time also appear in UTC, great, but it's quite > important that the local time also be there. And local time should be normative to deal with such unforeseen circumstances as a papal visit. From the southamerica file in the TZ database: # From Daniel C. Sobral (1998-02-12): # In 1997, the DS began on October 6. The stated reason was that # because international television networks ignored Brazil's policy on DS, # they bought the wrong times on satellite for coverage of Pope's visit. # This year, the ending date of DS was postponed to March 1 # to help dealing with the shortages of electric power. ;-) Eliot