Movement transmission system

A movement transmission system comprising:

• a driving mobile which is pivoted about a first axis and comprises a driving toothset distributed over a curved profile,
• a driven mobile which is pivoted about a second axis and comprises a driven toothset,
• an intermediate pinion which is pivoted about a third axis and comprises a toothset driven by the driving toothset and driving the driven toothset,
• the driving toothset, the curved profile, the driven toothset and the toothset being arranged at a same level or in a same plane,
• the driving mobile, the driven mobile and the intermediate pinion being arranged so that the driving mobile moves the driven mobile via the intermediate pinion through 1/m steps for at least some steps of the driving mobile, wherein m is a real number greater than 1, and so that the driving mobile can define an angular position, with minimum play, of the driven mobile via the pinion, whereas the driving mobile is in a given angular position,
• wherein the driven mobile is a month mobile and the driving mobile is a date mobile, and
• wherein the driven mobile is arranged so as to control the activation of a first tooth for driving the driving mobile, the first tooth being mounted on the date mobile so as to be displaceable between a deactivated, or retracted, position and an activated, or drive position.