Abstract: A calendar mechanism for a timepiece suitable for indicating a piece of information having a period that varies according to at least a first cycle and a second cycle is provided. The mechanism, inter alia, is a system for actuating a lever, in which the actuating system includes a first feeler-spindle intended to come into contact with the first cam and a second feeler-spindle intended to come into contact with the second cam the feeler-spindles being kinematically linked with each other and the actuating system being arranged to move the lever from the inactive position to the active position under the control of each of the cams.

Abstract: A calendar mechanism (1) for a timepiece, said calendar mechanism (1) being suitable for indicating a piece of information having a period that varies according to at least a first cycle and a second cycle, said mechanism (1) comprising, inter alia, a system (13) for actuating said lever (9), the actuating system (13) comprising a first feeler-spindle (21a) intended to come into contact with the first cam (15) and a second feeler-spindle (23a) intended to come into contact with the second cam (17), said feeler-spindles (21a, 23a) being kinematically linked with each other and the actuating system (13) being arranged to move said lever (9) from the inactive position of same to the active position of same under the control of each of said cams (15, 17).