As all my alarms are by the day and not by time of day I would find it very useful if there was away of selecting no time. There for on the date of the alarm the reminders would be activated @ 12:00am. Alternately to that have a default time setting under options. That way for anyone like me, the default time could be say set at 12:01am so that when I start my computer I get all my reminders for that day.
As it is now when I set an alarm I have to change the time to some time early in the morning.