2025 State Holidays Washington List. Click on the above states to see a quick reference guide and their 2025 state holidays calendar. The equipment must be installed between january 1, 2025 and december 31, 2025.

Washington state 2025 holidays, special days and observances : Wednesday, january 1 new year’s day monday, january 20 martin luther king jr.’s birthday monday, february 17 president’s.