Washington Revised Code Title 1. General Provisions § 1.20.055. Pacific daylight time (Contingent effective date)

(1) The time of the state of Washington and all of its political subdivisions is Pacific daylight time throughout the calendar year, as determined by reference to coordinated universal time.

(2) Pacific daylight time within the state is that of the fifth zone designated by federal law as Pacific Standard Time, 15 U.S.C. Secs. 261 and 263, advanced by one hour.