vespĕrus

I. of or belonging to the evening, evening-: his horae rigandi matutina atque vespera, Plin. 19, 12, 60, § 183 (dub.; al. matutino atque vespera): tempus vesperum, Cael. Aur. Acut. 1, 15, 141; 1, 15, 151.