SELECT DISTINCT R.id FROM gerace R INNER JOIN genericelements GE ON GE.id = R.id_genericelement INNER JOIN racecalendar RC ON RC.id_gerace = R.id LEFT JOIN sailclass2gerace SC2GER ON SC2GER.id_gerace = R.id WHERE (puntual_date < '2008-6-1' AND puntual_date >= '2008-5-1') AND (published = 'YES') ORDER BY puntual_date,R.id