CREATE TABLE table_7663 ("Region" TEXT, "Date" TEXT, "Label" TEXT, "Format" TEXT, "Catalog" TEXT)

What is the Date when the label was alfa records, and a Catalog of alca-487?
SELECT "Date" FROM table_7663 WHERE "Label" = 'alfa records' AND "Catalog" = 'alca-487'
SELECT "Date" FROM "table_7663" WHERE "Catalog" = 'alca-487' AND "Label" = 'alfa records'