@Edent back in pre-history (by which I mean before you and I were born) this wasn't a problem. Nobody cared if you were 3 seconds late each day and nobody cared if once a month, you needed to reset your watch from the church bells. For times where this was a problem, very expensive ("Railroad Quality") watches with highly accurate movements were available. They cost much more relative to the avg. income of the time than your Watchy cost you. So much so that they were often employer-provided...