CREATE TABLE table_16755 ("#" FLOAT, "Race Name" CLOB, "Circuit" CLOB, "Date" CLOB, "Winning driver" CLOB, "Constructor" CLOB, "Report" CLOB)

What date has a solitudering circuit
SELECT "Date" FROM table_16755 WHERE "Circuit" = 'Solitudering'
SELECT "Date" FROM "table_16755" WHERE "Circuit" = 'Solitudering'