service_id,start_date,end_date,sunday,monday,tuesday,wednesday,thursday,friday,saturday
summer_std,20210421,20210923,1,1,1,1,1,0,0
winter_std,20200924,20210420,1,1,1,1,1,0,0
summer_vac,20210421,20210923,0,0,0,0,0,1,1
winter_vac,20200924,20210423,0,0,0,0,0,1,1