Calendar display device and calendar watch

A calendar display device, in particular for a mechanical watch piece comprising a watch movement, the device comprising a first disk forming a disk of days carrying multiple series of inscriptions symbolizing seven days of a week;

• a second disk forming a disk of dates carrying inscriptions symbolizing a date of a month;
• a third disk forming a disk of months carrying 12 inscriptions symbolizing the months of the year, one of the disk of days and the disk of dates acting as a dial by being fixed, whereas the other of the disk of days and the disk of dates acts as a rotary disk by being arranged concentrically and rotatably in relation to said dial, said dial comprising an aperture making it possible to see an inscription of a current month on the disk of months which is mounted rotatably and is driven, either directly or indirectly, by the watch movement of said watch piece;
• a hand placed concentrically and rotatably in relation to said dial so as to indicate simultaneously a date and a day of the week;
• and a direct kinematic link between the disk of months and said rotary disk so as to make automatic an indexing between inscriptions on said rotary disk and inscriptions on the dial, depending on a month displayed.