On what day did Pantera release their album that peaked at number 27 on the US "Billboard" Heatseekers chart?
Pantera discography:  The band's major-label debut, "Cowboys from Hell" (1990), peaked at number 27 on the US "Billboard" Heatseekers chart, and was certified platinum by the Recording Industry Association of America (RIAA). Cowboys from Hell: Cowboys from Hell is the fifth studio album and major label debut by American heavy metal band Pantera, released on July 24, 1990 by Atco Records.
July 24, 1990