problem with time on event

[kawiegirl]

First of all thank you for such a great calendar !! I am having a problem when I add an event with lets say a time from 7:00pm to 9:00pm it will show up on the calendar as 6:59pm to 8:59pm. It does sort of the same thing when I enter a full day event if i put it on the 2nd of the month it shows up on the 1st. I have no idea what I am doing wrong. Any help would be great.

Thanks

http://www.frankenlust.com/calendartest/plans.cgi
I think I am using Plans Version 7.5.2
This happens with Internet Explorer or Firefox.
And Plans is running on a server with the following:
Operating system Linux
Kernel version 2.6.11.7.dn2.p4
Machine Type i686
Apache version 1.3.33 (Unix)
PERL version 5.8.4