Erm, there is a superstition in my region/country that say that you're sleepy at your birth time. So when I was in school, and I had hours at school until 2 PM (6 hours from 8 AM to 2 PM) and I was sleepy around that time then my mother revealed to me that I was born at 13:37, so that's how I know. And you know how parents are, they like to repeat some stuff throughout your life, like it or not. So I got drilled in my head what my birth hour:minute is.