Unless you have a grumpy neighbour that insists on his post-lunch nap, weekday lunchtime is when working people are out, stay-at-home mums feed the hungry spawn and every other normal person is eating.
Quiet time is from 1pm - 3pm or us Swissies would be sucking soup through a straw (NO SLURPING!

).
And in normal buildings, with normal working stiffs, it's only on Sundays that it's considered a shooting offence to not observe quiet time.