3 listings in Los Osos, 3 of them farmers markets. 1 has a market day and hours from a public register or the market's own website, and 1 appears in the USDA SNAP retailer register. Market days in Los Osos: Monday (1).
Few Los Osos listings have a schedule or SNAP authorization we could source. San Luis Obispo, 10 miles away, has 11 listings with more sourced detail; see also all of California.