CREATE TABLE table_75385 ("Polling Firm" CLOB, "Date" CLOB, "PSD - PC" CLOB, "UDMR" CLOB, "Elena B\\u0103sescu" CLOB, "Others" CLOB, "Undecided" CLOB)

When the other is n/a and the psc-pc is 30% what is the date?
SELECT "Date" FROM table_75385 WHERE "Others" = 'n/a' AND "PSD - PC" = '30%'
SELECT "Date" FROM "table_75385" WHERE "Others" = 'n/a' AND "PSD - PC" = '30%'