In reply to WALTER HOLT.

As long as the winder is properly configured for your watch, your Rolex watches should stay running and maintain the proper time and date. With that in mind, if you do not wear them for more than a month, the date may be wrong due to the different number of days in each month. Only the Rolex Sky-Dweller will compensate for the different number of days (due to its annual calendar complication), and even it needs to be re-set on the first of March. Additionally, no mechanical watch, Rolex or otherwise will keep perfect time, so it will not be the exact time if you are comparing it to an atomic clock. However, if recently serviced it should only with a variance of several seconds per day, so if you notice it minutes or hours off each then day, then the watch likely needs repairs or servicing.