when was the rolex day date introduced?
<answer> The Rolex Day-Date Released in 1956 and lasting just over a year. <context> History of the Rolex Day Date President. The Rolex Day-Date Released in 1956 and lasting just over a year, the Rolex 6511 model, first known as the Rolex Day Date, had a day window showing at twelve o’clock as well as the date shown at three o’clock.