https://knowt.com/note/bd53a921-79de-434c-8d4d-b060d22e3fcd/Cheapflights-What-day-is-cheapest youmobs 2 weeks ago https://knowt.com/note/bd53a921-79de-434c-8d4d-b060d22e3fcd/Cheapflights-What-day-is-cheapest