CREATE TABLE "schedule" (
  "week" real,
  "date" text,
  "opponent" text,
  "result" text,
  "record" text,
  "game_site" text,
  "attendance" real
);

Question: What is the date of the game being played at Schaeffer Stadium?
SQL: SELECT "date" FROM "schedule" WHERE "game_site"='schaeffer stadium';