Why does the date on most Omega watches change over a period of 1.5 to 2 hours?
Omega uses this date-change system so that the date-change is clearly visible around midnight and that there is no confusion as to the moment of the date-change.The date of the day that is drawing to a close can be seen in full until 11.45pm. At midnight, the date of the day drawing to a close is still entirely visible at the bottom of the date window, with the new date appearing at the top of the window. Then, the new date moves down through the window and the previous day’s date gradually disappears. This operation is completed by 1.30am at the latest.Avoid changing the date manually between 9pm and 2am, since this is the period during which the automatic date-change is in operation.
