Studies of the high-pressure (HP) As Sifah eclogites in the NE part of the Saih Hatat window, Oman, have used different radiometric dating results (Ar/Ar, Sm-Nd vs. U-Pb, Rb-Sr) to interpret disparate tectonic models for the timing, geometry, and cause of continental subduction – including its association with the Samail Ophiolite. To determine the absolute timing of continental subduction, we coupled geochronological and geochemical analyses of major (garnet) and accessory phases (zircon, rutile) from the highest-grade metamorphic rocks in the Saih Hatat (As Sifah eclogites). Early Permian (283.8+/-0.7 Ma) tuffaceous zircon cores are consistent with earlier interpretations that the As Sifah rocks were sourced from a distal portion of the Arabian continental margin. Data from a range of bulk compositions, metamorphic assemblages, and rock textures consistently suggest a single metamorphic event, with garnet growth starting by ~81 Ma and ceasing by ~77 Ma, with slight but consistent offsets in the timing of metamorphic (re)crystallization between different lithologies. These new data confirm previous structural, metamorphic, and geochronological interpretations for continental HP metamorphism in a single NE-dipping subduction zone beneath the already obducted Samail Ophiolite; there is no robust evidence for a ~110 Ma event or a continental-ward dipping subduction zone. Combined with literature constraints, our data suggest that the As Sifah unit was subducted and exhumed relatively slowly (~5 mm/yr) compared to other continental high-pressure settings - likely associated with the dragging to mantle depths by a mafic root, followed by long residence in the lower to middle crust.