CREATE TABLE table_name_52 (date VARCHAR2, others VARCHAR2, psd___pc VARCHAR2)

When the other is n/a and the psc-pc is 30% what is the date?
SELECT date FROM table_name_52 WHERE others = "n/a" AND psd___pc = "30%"
SELECT "date" FROM "table_name_52" WHERE "30%" = "psd___pc" AND "n/a" = "others"