The Rolex Datejust and the Date Window
The history of the Rolex Datejust is well-documented. First introduced in 1945, the Datejust not only commemorated Rolex’s 40th anniversary, it also presented a milestone in watchmaking. It was the first self-winding watch to feature a quick-changing date window, whose date automatically changed at midnight.
Before the Datejust came along, the date function was already in place and in use in many watches. It was usually in the form of a calendar dial on the periphery of the watch, with a separate hand or pointer to indicate the date. Rolex’s approach, however, set the standard for how the date display should look and function on a watch.