I am trying to import calendar events into outlook but cannot get the reminder time to work. I can get it to turn on or off but I can't get it to change from 15 minutes. I have tried both including or excluding Reminder Date and I have used the minutes for the reminder time (i.e. 1440 for one day). What am I doing wrong or is there no way to change the reminder from the default 15 minutes?

Subject Start Date Start Time End Time Show time as ReminderOn/Off ReminderTime Description
Apr Prelims 5/4/2014 7:00 PM 7:05 PM 0 TRUE 1440 Send Report
Apr Finals 5/6/2014 3:00 PM 3:05 PM 0 TRUE 1440 Send Report