50 C.F.R. § 660.510
Fishing seasons
All seasons will begin at 0001 hours and terminate at 2400 hours local time. Fishing seasons for the following CPS species are:
(a) Pacific sardine. July 1 to June 30, or until closed under § 660.509.
(b) Pacific mackerel. July 1 to June 30, or until closed under § 660.509.