CREATE TABLE table_55183 ("Week" CLOB, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Kickoff [a ]" CLOB, "Game site" CLOB, "Attendance" CLOB, "Record" CLOB)

What is the kickoff time for the Hubert H. Humphrey Metrodome?
SELECT "Kickoff [a ]" FROM table_55183 WHERE "Game site" = 'hubert h. humphrey metrodome'
SELECT "Kickoff [a ]" FROM "table_55183" WHERE "Game site" = 'hubert h. humphrey metrodome'