[Toadling]

My interpretation of GTD and David Allen's message is that appointments that occur on a specific date belong on your calendar (iCal) and everything else goes on your action list (OmniFocus). This is what I've been doing and it has worked well for me.

So in your example, a meeting on June 30th at 1PM, I'd make an iCal event. I'd put nothing in OmniFocus unless there were some additional actions I needed to perform relating to the meeting (e.g. notes or a presentation to prepare ahead of time, questions to ask during the meeting, follow-up with something afterwards, etc). If I were to add something in OmniFocus, I might also include a start or due date that corresponds to the date I have for the event in iCal.

Hope this helps.

-Dennis