Evening was a period of the day. The First Doctor observed the evenings on one planet to last "about" four hours. (TV: Galaxy 4)
After he murdered a man for cheating in a game of cards sometine in the Old West, Gaylord Lefevre asked his other opponents to not let the "unpleasent episode" from ruining their evening. (COMIC: The Greatest Gamble [+]John Peel, DWM backup comic stories (Marvel Comics, 1981). Page 39.)
In the 1950s, hours of television broadcast in the United Kingdom were strictly limited by the British government, and each evening's broadcasts from Alexandra Palace ended between 10.30 and 11pm with the National Anthem. (PROSE: The Time Traveller's Almanac)
While dealing with Handles, the Eleventh Doctor quipped "those Cyber-evenings must fly". (TV: The Time of the Doctor)