McDonald's 1986 advertising campaign featuring a singing crescent moon was called “Mac Tonight.”
The campaign promoted McDonald's evening business and used a crescent-moon character wearing sunglasses and singing a version of “Mack the Knife.” The name was a pun on “Mac” and “tonight,” linking the McDonald's brand to nighttime dining.
Mac Tonight became especially recognizable through television commercials and a distinctive visual identity. The campaign showed how McDonald's branding could use a character and song to associate a particular daypart with the restaurant.
Mac Tonight is sometimes confused with McDonald's long-running human and animal mascots. It was primarily an advertising character for a specific campaign rather than the chain's central mascot. The campaign also had a distinct 1980s style that separated it from later global branding.