A horological display mechanism (100) including first drive elements (1) for rotating a first display wheel set (10) through a first number of steps in order to display a first magnitude, and second drive elements (2) for rotating a second display wheel set (20) through a second number of steps in order to display a second magnitude, this display mechanism (100) comprises coupling elements (3), separate from the first drive elements (1) and from the second drive elements (2), and which are arranged to index the first display wheel set (10) and the second display wheel set (20) relative to one another, to ensure their alignment, in an alignment direction (A), in a display area (30). The invention further relates to a timepiece (1000), in particular a watch, including such a display mechanism (100), in particular a calendar mechanism.