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There are at least two bands who go by the name Zero Hour. 1. Zero Hour is a progressive metal band formed by twin brothers Jasun and Troy Tipton in the bay area of San Francisco, California in 1993. 2. Dark, heavy crust/metal band also from the Bay Area, in the vein of Amebix, Deviated Instinct, and Neurosis. Short lived,with two releases (self titled 7" and a split with Apeface), and not much known about the band itself. The band featured the drummer of Econochrist.

Genre: Progressive Metal, Technical Metal, Progressive, Metal, American