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Re: Duration: Does 1 day == 24 hours?
Alan Davies wrote:
> At 19:18 2001-03-27 -0600, you wrote:
> >A day ends at T235959 on that day. Right? At least this the logical
> I wouldn't expect your conference to finish at midnight
> though- I'd expect you to use a sensible duration of, say,
> 9 hours
<insert expressions of amazement here>.
This thread is extremely surprising to me. To me, it's obvious that a duration
is a scalar value that is equivalent to some number of seconds. To take a
duration of one day and turn it into 15 hours, or 9 hours, or something, just
does not make sense to me. (The "sensible duration" approach, in particular,
is fraught with peril; who decides what's sensible? The modern 8-hour work day
is a historical artifact left over from the "share the work" sentiment of the
An event with a duration of one day is not the same as an all-day event. An
all-day event is just one that starts at midnight and ends at midnight (or 0900
and 1700, if that's what you prefer); it does not need any kind of special
syntax. An event with a duration of one day is an event that lasts 24 hours.
It'd be a strange sort of person-to-person meeting, but so what? If iCalendar
were used only for person-to-person meetings, we wouldn't have durations
expressed in weeks, either; nobody meets with someone for three weeks without a
break. (I was at IETF for a week, for example, but I wasn't meeting with
anybody at 0100; I put it on my calendar as a recurring event.)
To me, the duration should specify the actual length of real time that the
event will take. If I tell my CUA I expect it to take 24 hours, then my CUA
should be free to express that as 1 day. If I shift the start of the event and
leave the duration the same, the event should really take the same amount of
real time; it should not have some sort of floating DTEND that gets arbitrarily
pinned to midnight.
Am I the only one here who believes this?
|John Stracke | http://www.ecal.com |My opinions are my own. |
|Chief Scientist |===============================================|
|eCal Corp. |Beware of wizards, for you are crunchy and good|
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