Equinox is the twenty-third studio album by Omar Rodríguez-López as a solo artist. Although Rodriguez-Lopez Productions intended to release the album on December 28, 2012 (which is the date listed on the Bandcamp page), it was only made available on January 1, 2013. Equinox is the first Mars Volta-related release since 2009's Xenophanes to feature band's ex-drummer Thomas Pridgen. The instrumental tracks to the songs "Oír Hasta Júpiter" and "Mermaid Grapefruit" were first heard on the soundtrack to the 2007 film El Búfalo de la Noche for which Omar wrote the score in 2005-2006.
Since 2014 the album is no longer available to purchase officially, as Rodriguez-Lopez's Bandcamp page has been taken down after a split with Sargent House label.