Vespers

Vespers is the sunset evening prayer service in the Western Catholic, Eastern (Byzantine) Catholic, Eastern Orthodox, Anglican, and Lutheran liturgies of the canonical hours. The word comes from the Greek ἑσπέρα and the Latin vesper, meaning "evening." It is also referred to in the Anglican tradition as Evening Prayer or Evensong. The term is also used in some Protestant denominations (such as the Presbyterian Church or Seventh-day Adventist Church) to describe evening services.

Read more about Vespers:  Historical Development of Vespers in The Latin Church Before The Second Vatican Council, Musical Settings of Vespers