ad-vespĕrascit — Lewis & Short
ad-vespĕrascit, āvit, 3,
I v. impers. and inch., it approaches evening, it is getting to be evening, twilight is coming on:
advesperascit,Ter. And. 3, 4, 2; Vulg. Luc. 24, 29:
cum jam advesperasceret,Cic. Verr. 2, 4, 65, etc.; id. Fin. 4, 28:
nisi advesperāsset, Auct. B. Hisp. 24: cum advesperavisset,Plin. 7, 52, 53, § 178:
advesperascente die,Vulg. Prov. 7, 9.