The native Javanese system groups days into a five-day week called "Pasaran", unlike most calendars that uses a seven-day week. The name, "pasaran", is derived from the root word "pasar" ("market"). Historically, but also still today, Javanese villagers gather communally at local markets to socially meet, engage in commerce, and buy and sell farm produce, cooked foods, home industry crafted items and so on. John Crawfurd (1820) suggested that the length of the weekly cycle is related to the number of fingers on the hand, and that itinerant merchants would rotate their visits to different villages according to a five-day "roster".