CREATE TABLE table_32556 ("Week" TEXT, "Date" TEXT, "Location" TEXT, "Opponent" TEXT, "Result" TEXT)

Which week starts on December 28, 1997?
SELECT "Week" FROM table_32556 WHERE "Date" = 'december 28, 1997'
SELECT "Week" FROM "table_32556" WHERE "Date" = 'december 28, 1997'