[Ietf-calsify] PERIOD types

[Cyrus Daboo]

Hi Sam,

--On April 11, 2005 10:29:35 PM -0400 Sam Roberts <sroberts at uniserve.com> 
wrote:

> When you add a day, you get the same time, one day later, irrespective
> of DST shifts.
>

OK, what about 2:30 am on the Sunday of a DST shift that adds one hour? 
That time does not literally exist as the clocks jump from 2 am to 3 am. So 
if you have 2.30 am on Saturday the day before, you can't simply add one 
day and expect to get a valid date-time. i.e. DST shifts do have to be 
taken into account for at least this edge case.

-- 
Cyrus Daboo