Vespertine

vespertine \ˈves-pər-ˌtīn\ adjective: 1. of, relating to, or occurring in the evening, 2. of an organism, active at dusk or in the evening

Etymology: Latin vespertinus, from vesper evening star

As matutinal is to dawn, so vespertine is to dusk. They are the two halves to crepuscular's whole. Björk’s 2001 album is named Vespertine. It’s an apt title, neatly summing up the atmosphere of the music.