CREATE TABLE table_66646 ("Game" FLOAT, "Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Location/Attendance" TEXT, "Record" TEXT)

What is the game number on December 21?
SELECT COUNT("Game") FROM table_66646 WHERE "Date" = 'december 21'
SELECT COUNT("Game") FROM "table_66646" WHERE "Date" = 'december 21'