Not sure how accurate this is, but in The Name of the Rose by Umberto Eco, some monks stay up all night chanting so that they can wake up the other monks for morning prayers. So, the night monks chant a Hail Mary X number of times, and that takes them Y amount of time.
Not sure how accurate this is, but in The Name of the Rose by Umberto Eco, some monks stay up all night chanting so that they can wake up the other monks for morning prayers. So, the night monks chant a Hail Mary X number of times, and that takes them Y amount of time.