In event the last day for filing any document, having any hearing or for doing any other thing or matter in any court shall fall upon a day when such court shall be closed according to rule 2 or rule 21, then and in that event the time for such filing, hearing, or other thing or matter shall be extended until the end of the next business day upon which such court shall be open for business. Notwithstanding this rule, extensions of time for trial are governed by CrR 3.3(d)(8) and CrRLJ 3.3(d)(8).
Wash. Gen. R. GR 3