Android :: Trying To Create A Notification In Phone

I am trying to create a Notification using Android's Notification Manager, however, the trick is that I want the notification to show up 30 days in the future. In my code I'm doing this: Code...
However, the notification is still showing up instantaneously. From what I read, the "when" parameter to the Notification constructor is only used to sort the notifications in the StatusBar. Is there anyway to make the notification show up in at a future date/time?