Ever Make A Note To Yourself You Can't Decipher?

Checking my daytimer, I see I have written "7:30 - Piedmont" for this Thursday. What this refers to, I have no clue. Would that be 7:30 AM or PM? Am I to meet someone somewhere in the Piedmont area where I live? Is it in reference to Piedmont Magazine, which I sometimes write for? No idea. I'm open to any hints or suggestions my readers may care to give me. Please???