On 10/30/13 3:08 PM, ned+ietf(_at_)mauve(_dot_)mrochek(_dot_)com wrote:
On Wed, Oct 30, 2013 at 09:25:59AM +0100,
Carsten Bormann <cabo(_at_)tzi(_dot_)org> 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