6 listings in Sterling, 2 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 Sterling: Friday (1).
Few Sterling listings have a schedule or SNAP authorization we could source. Lancaster, 4 miles away, has 10 listings with more sourced detail; see also all of Massachusetts.