Washington State Courts - Appellate and Trial Courts

Legal Holidays are (RCW 1.16.050):
Sundays
New Year's Day
Martin Luther King Birth Day
President's Day
Memorial Day
Juneteenth Day
Independence Day
Labor Day
Veteran's Day
Thanksgiving Day
Thanksgiving Friday
Christmas Day
Courts of Record (Appellate and Superior) are closed on legal holidays (2.28.100)
County Clerks' Offices must remain open on all judicial days - every day except Saturdays, Sundays, and legal holidays (CR78; AGO 63-64 No. 93)
District Courts are open except on non-judicial days (legal holidays) (3.30.040)
Municipal Courts are open as prescribed by the legislative body of the city, but are not open on non-judicial days (legal holidays) (3.50.110)

Washington State Constitution Article 4, Section 6	Jurisdiction of superior courts
RCW 1.16.050	Legal holidays and legislatively recognized days
RCW 2.08.030	Courts of record - Sessions
RCW 2.28.100	Legal holidays - No court - Exceptions
RCW 3.30.040	Sessions (on nonjudicial days) District Courts
RCW 3.50.110	Sessions - Municipal Courts
RCW 35.20.020	Sessions - Judges may act as magistrates -- Night court
RCW 35.21.175	Offices to be open certain days and hours
RCW 36.16.100	Offices to be open certain days and hours
RCW 42.04.060	Offices to be open certain days and hours
CR 6	Time
CR 77 (d) (e)	Superior courts and judicial officers
CR 78 (b)	Clerks
GR 21	Emergency court closure
GR 2	Holidays
SCA Handbook - pg. 1003-4	Legal holidays, emergency court closure, nonjudicial days, time
AGO 63-64 93	Legal holidays on Saturday or Sunday