[uf-discuss] Developing a strategy for deployment of microformats

brian suda brian.suda at gmail.com
Tue Jul 18 14:06:25 PDT 2006

There is another "gotcha" with date-times in iCalendar. This might not
be your issue and i'm not sure how various implementations handle this,
but end dates are not inclusive.

For example:
DTSTART: 20060101
DTEND: 20060102

This is NOT a two day event, this will end at midnight between the 1st
and 2nd.

If you wanted a two day event you would have to use
DTSTART: 20060101
DTEND: 20060103


DTSTART: 20060101
DTEND: 20060102T235959

Google Calendar MIGHT be using INCLUSIVE dates (it would be a simple
test to find out), so that might be some of the problems as well.

Just an FYI to anyone, be aware of this, i know i have been guilty
myself of coding-up an hCalendar and then forgetting about exclusive
dates and having conference events ending a day short!


Scott Reynen wrote:
> On Jul 18, 2006, at 2:03 PM, Ryan King wrote:
>>> Another problem - going to, for example,
>>> http://www.bath.ac.uk/whats-on/getevent.php?event_id=3010&catIds=ALL
>>> Tails use the correct date (17 July) whereas the Google hCalendar
>>> Greeasemonkey script uses a date of 16 July.
>> I'm not familiar that greasemonkey script. You may want to talk to
>> its author.
> I know of two such scripts, and I am the author of one.  I'm not
> currently able to load that URL, so I can't see the problem right
> now.  There are three places where this can go wrong: 1) in the
> markup, 2) in the Greasemonkey script, and 3) at Google Calendar.  For
> 1), in my limited testing, almost no one is publishing time zones
> correctly, which is only an obvious problem when you try to use an
> event across time zones.  For 2), if there is a bug, I'll need to see
> the URL in question to track it down.  For 3), I vaguely recall Google
> Calendar doesn't always correctly convert times to the time zone set
> in your preferences.
> Most problems are in 1) and/or 3), which makes it difficult to track
> down problems in 2).  Garbage in, garbage out, as they say.
> Peace,
> Scott
> _______________________________________________
> microformats-discuss mailing list
> microformats-discuss at microformats.org
> http://microformats.org/mailman/listinfo/microformats-discuss

More information about the microformats-discuss mailing list