|Song by Los Tres Caballeros|
|Single by Luis Miguel|
|from the album Romances|
|Luis Miguel singles chronology|
Cantoral composed the song in 1956, in Washington D.C., in front of the Potomac River, at the end of a Los Tres Caballeros's tour of the United States. During the tour he had had an affair with one of the girls participating in the show, who should return to New York the next morning. This love episode, and the presence of a lounge clock during their last meeting, were the events that triggered the inspiration of Cantoral, which would soon turn this episode, relatively trivial, into the story of a deep love.  
Los Tres Caballeros premiered the song in 1957 and it was an immediate success. The following year it was recorded by trio Los Panchos in 1958.  Since then, it has been versioned by countless interpreters, in several languages. 
- Spanish version
- Japanese version
- "Roberto Cantoral, el compositor que trascendió a través de "El Reloj"". Radio Fórmula (in Spanish). 7 June 2019.
- Berlanga, Ángel (18 August 2010). "La muerte del autor" (in Spanish). Página 12. Retrieved 16 September 2019.
- Brown, Ricardo (23 October 2009). "Perdonen mi cursilería" (in Spanish). Ricardo Brown.blogia.com. Retrieved 16 September 2019.
- "El reloj by Roberto Candoral (1956)". Secondhandsongs.
- Adrián, Vogel. "Un siglo de canciones 80: "El reloj"" (in Spanish). El Mundano. Retrieved 16 September 2019.
- "Latin Grammy Hall of Fame – 2001". Latin Academy of Recording Arts & Sciences. Retrieved 26 June 2016.
- "Luis Miguel: Chart history – Hot Latin Songs". Billboard. Prometheus Global Media. Retrieved 6 March 2017.
- "Luis Miguel: Chart history – Latin Pop Songs". Billboard. Prometheus Global Media. Retrieved 6 March 2017.
- "Los Premios Latinos de BMI Latin 1999". Billboard. Prometheus Global Media. 111 (26): 33. 26 June 1999. Retrieved 29 June 2015.