The President's Day Date from Rolex has two inner wheels to contend with.  Not only does it have the date wheel but also the day of the week wheel to manage.  The Day Date with no quickset would be very time consuming to push through the date and day sets in order to get to the appropriate calendar and week day views.

However, the quickset features allowed the date to be adjusted quickly.  Yet, with the Presidential Day Date, this was not enough.  There had to be a separation between the Day of the Week wheel and the Calendar month wheel in order to have the power to easily set either the week or the month independently.  So, Rolex came up with a solution - the Double Quickset Feature.