CREATE TABLE table_24609 ("Season" CLOB, "Timeslot Times listed are Eastern time" CLOB, "Season premiere" CLOB, "Season finale" CLOB, "TV season" CLOB, "Ranking" FLOAT, "Viewers  ( in millions of households ) " CLOB)

When did was the start of the season that ended May 19, 1997?
SELECT "Season premiere" FROM table_24609 WHERE "Season finale" = 'May 19, 1997'
SELECT "Season premiere" FROM "table_24609" WHERE "Season finale" = 'May 19, 1997'