4 listings in Washington, 1 of them farmers markets. 1 has a market day and hours from a public register or the market's own website. Market days in Washington: Monday (1), Tuesday (1), Wednesday (1), Thursday (1), Friday (1), Saturday (1), Sunday (1).
Few Washington listings have a schedule or SNAP authorization we could source. St. Louis, 43 miles away, has 43 listings with more sourced detail; see also all of Missouri.