Early is on time.
On time is LATE.
Late is, well, you're dead to me.
10:00 AM is 10:00 AM. When you say you're going to call someone at 10:00 AM, call them at 10:00 AM!
Meet them at 1:00 PM. Not 1:05 PM, not 1:12 PM. Show up when you say you're going to show up!
Treat appointments and meetings seriously!