As I walk to the T each morning, I pass by a digital time and temperature sign. It's big, it's prominent, and yet I don't really use it to tell time, at least, not time relevant to anything. This is how I determine on-time-for-work time:
I know I'm late if I see the guy walking the French bulldog.
I know I'm on time if I see the man smoking a pipe.
I know I'm a couple minutes early if I see the girl in the blue baseball jacket with the really long hair.
Yesterday, I was en route to the T, and I saw the French bulldog, the pipe smoker, and the long-haired girl. I was confused for the rest of the day.