"Days Go By" is a 2001 song by the British electronic band Dirty Vegas from their eponymous album. The song became a radio hit in 2002, peaking at number 14 in the United States, and received the Grammy Award for Best Dance Recording. It also peaked at number 16 in Dirty Vegas' home country of the United Kingdom. "Days Go By" received significant public exposure in a commercial for the 2003 Mitsubishi Eclipse. The album artwork is done by American artist Richard Phillips.Fall Out Boy sampled "Days Go By" in their 2007 hit "This Ain't a Scene, It's an Arms Race".

The music video for the song is unusual in that it largely consists of two dancers representing one character performing a routine of popping, locking, the robot and breakdancing. The performance occurs in front of Chroni's Famous Sandwich Shop in East Los Angeles, California, and tells the story of a dancer who shows up once a year and dances all day from sunrise to sunset. He dances in hopes of bringing back a lost love, who left him because he couldn't stop dancing. (The video even halts abruptly while some of the bystanders interject what they think happened to the aforementioned love.) The young dancer in the video is Garland Spencer. The older dancer is Byron McIntyre. The clue that both men represent the same character at different ages is provided by the dancer's shoes. The older dancer wears high-top Converse sneakers ("Chuck Taylor All-Stars" or "Chucks") that are faded, scuffed, and one shoe is actually taped to hold it together; whereas the young dancer wears a clean, bright-orange version of the same sneakers. According to the video's story, the man's lost love purchased the original sneakers for him as a gift, and now he wears them as part of his annual dance ritual. The sneakers match the style and attire of the young dancer in his sweatsuit (presumably in the 1980s), but pose a striking contrast for the older dancer who is otherwised attired in a suit, tie, and suspenders.

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