International audienceThe Kasena reckon time in an apparently surprising manner. Each unit of time measurement is conceived as dual : conceptions of the lunar month and the solar year, as well as the day (twenty-four hours period), are modelled on the alternation of daylight and night. The altenating units (day/night ; waxing/waining phases of the moon ; rainy season/dry season) constitute elements of a code : each endowed with a special significance, they allow the Kasena to attribute differential value to time intervals, and thus, determination of the proper time for the performance of rites.Les Kasena enregistrent le temps d’une façon à première vue singulière. Ce mode de comptage dénote un discours qui pose que tout intervalle de temps ...