Hi,

Im creating an appointment in a user outlook calendar...all works well...bar that the appointment is made for 1 hour ahead of the start time i pass in.

For example, here is my start date below...in the users calendar it then appears as starting at 9pm on the date. 

NB Im using GMT time...is there something im missing why its doing this?  I have checked the exchange server and time is right on it.

Thanks...

<cal:dtstart dt:dt=""dateTime.tz"">2009-07-02T20:00:00.000Z</cal:dtstart>

I know this may sound whacky, but are you accounting for Daylight Savings. By this I mean that some people, rather thank click the DST button in their DateTime settings on the OS actually manually change it back and forth an hour.

I know it sounds crazy, but I would check that, also verify that the problem occurs on other users...

;)