I do know about the time-out--I believe it is about 4 hours but sometimes I come to my senses after that period..

sabby did teach me that instead of trying to contact a moderator individually, I can contact them all at once via the Report Post icon (the triangle icon with the exclamation mark inside of it, situated on the left side of the message screen) and that way all the mods will see my delete request and that would probably make the deletion much easier and faster.