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 and carrying multiple series of inscriptions symbolizing seven days of a week;
• a second disk forming a disk of dates and carrying inscriptions symbolizing a date of a month;
• a third disk forming a disk of months and carrying 12 inscriptions symbolizing months of a 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 the inscription of a current month on the disk of months which is mounted rotatably and is driven, either directly or indirectly, by a 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 correction mechanism cooperating at least with a gear train driving the disk of months, either directly or indirectly, starting from the watch movement of said watch piece, said mechanism configured to advance and reverse the disk of months so as to allow modification of the month displayed on the dial in a bidirectional manner.