Struck in Patterns Distinct Services Are Known By

Different striking patterns on the semantron carry different meanings within a monastery's daily schedule, so an experienced monastic can identify which service is being announced, matins, the divine liturgy, a particular feast day observance, purely from the rhythm being sounded, in much the same functional way European church bell patterns communicate different occasions to a parish. A popular monastic legend, recounted though not treated by scholars as literal history, holds that Noah used a semantron to summon the animals to the Ark, a story that reflects how deeply the instrument is woven into Orthodox devotional imagination rather than serving as any kind of historical claim about its actual origin.

The semantron remains in active daily use at the monasteries of Mount Athos today, sounded well before dawn to call monks to the extended cycle of services that structures monastic life there, making it, alongside the bells that now also ring at many of the same monasteries, one of the most continuously used ritual sound instruments in Christian monastic practice. Visitors to Athos today often describe the sound as unexpectedly penetrating for so simple an instrument, carrying clearly across a monastery courtyard well before any bell begins to ring alongside it.