Hi Ted,
--On January 3, 2017 at 1:51:54 PM -0500 Ted Lemon
<mellon(_at_)fugue(_dot_)com> wrote:
No that simply does not work. Repeating events or alarms may not involve
any UI at all, but the device may need to trigger those at a specific
local time - that means time zone information has to be taken into
account somewhere. This is a crucial fact of any calendaring and
scheduling system that those of us who have been using iCalendar
(RFC5545) fully appreciate.
This is true, but any specific local time will always occur at a specific
universal time, so this isn't actually a problem.
No! That is not true because a future local time is not guaranteed to be at
a specific universal time because local government can change their time
zone (or more likely) their daylight savings time transition at any time
between now and said future time. i.e., you cannot "pre-cache" all the
local time -> UTC mappings for a future recurring event and then just use
the UTC values, because the time zone definition may change.
--
Cyrus Daboo