service_id,monday,tuesday,wednesday,thursday,friday,saturday,sunday,start_date,end_date
cal1-mon-tue-wed-thu-sun,1,1,1,1,0,0,1,20260105,20260531
cal2-fri-sat-2,0,0,0,0,1,1,0,20260109,20260530
cal3-fri-sat,0,0,0,0,1,1,0,20260508,20260509