CREATE TABLE table_28210383_1 (original_air_date VARCHAR, prod_code VARCHAR)

What was the orginal air date for episodes with production code 2acx12?
SELECT original_air_date FROM table_28210383_1 WHERE prod_code = "2ACX12"
SELECT "original_air_date" FROM "table_28210383_1" WHERE "2ACX12" = "prod_code"