An entry summary for consumption or a withdrawal for consumption for quota-class merchandise shall be presented only during official office hours, except as provided in Sec. Sec. 132.12 and 141.62(b) of this chapter. For purposes of administering quotas, ``official office hours'' shall mean 8:30 a.m. to 4:30 p.m. in all time zones. [T.D. 79-221, 44 FR 46814, Aug. 9, 1979]