CREATE TABLE table_80139 ("Vehicle Flight #" CLOB, "Date" CLOB, "Pilot" CLOB, "Mach" FLOAT, "Velocity  ( km/h ) " FLOAT, "Altitude  ( meters ) " FLOAT, "Duration" CLOB)

What Date has a Mach of 0.662?
SELECT "Date" FROM table_80139 WHERE "Mach" = '0.662'
SELECT "Date" FROM "table_80139" WHERE "Mach" = '0.662'