Does anone know a term specific to the afternoon?

I couldn't find one, but as matutinal < Latin matutinalis < matutinus < Matuta 'goddess of the dawn', vespertine < vesper 'evening', diurnal < diurnalis < dies 'day', nocturnal < nocturnalis < nox, noctis, 'night', crepuscular < crepusculum 'dusk, twilight' < creper 'dusky, dark'. The Latin word for afternoon is pomeridianus or postmeridianus. So, how about pomeridianalar? (Also, the Latin word for afternoon meal is merenda. Maybe that could be used.)

Ceci n'est pas un seing.