This paper aims at understanding MOOC learners' activity patterns, taking into account factors like personal schedule, traditional working hours, do-mestic time, nighttime and their relation with MOOC course opening hours, live sessions, essay submission deadlines... Are MOOC learners adopting nonstandard learning schedules? Does the MOOC schedule determine the connection patterns of the learners? Four search topics and findings emerge from our research A/ Observations related to the density of learning activity B/ A weekly typology of learning days, C/ Attraction for a “live” contact point, D/ The “21:00 effect”. Finally, we suggest a series of best practices for MOOC design.