These clocks do not run. But they are set to special times. My firstborn son arrived at 5:04a.m. in 1978. My second baby, a daughter, arrived at 2:17a.m. in 1981. A few years ago I saw this clock idea in a decorating magazine. I thought to myself one of these days when I find some unique antique clocks I'd like to do that. Well, never finding those vintage ones, I recently decided to use these more modern ones. Love these timely reminders of two of life's greatest moments and blessings.