"Who Knows Where the Time Goes?" is a song written by the English folk-rock singer and songwriter Sandy Denny. Denny originally recorded the song as a demo in 1967, singing and playing guitar on the track. Later that year, she briefly joined the folk band The Strawbs, and re-recorded the song, again with only her voice and guitar, for what became the album All Our Own Work, which would not be released until 1973. "Who Knows Where the Time Goes?" became a signature song for both Denny and Fairport Convention, and has been covered by many artists.