CREATE TABLE table_30842 ("Age" FLOAT, "Date" CLOB, "Track" CLOB, "Race" CLOB, "Distance  ( miles ) " CLOB, "Jockey" CLOB, "Handicap" CLOB, "Field  ( No. horses ) " CLOB, "Place" CLOB, "Time" CLOB, "Prize Money" CLOB, "+ Sweepstake" CLOB, "Archerpars_m_singles winnings" CLOB)

On what date was the track Ballarat?
SELECT "Date" FROM table_30842 WHERE "Track" = 'Ballarat'
SELECT "Date" FROM "table_30842" WHERE "Track" = 'Ballarat'