CREATE TABLE table_56007 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When did the north melbourne team play?
SELECT "Date" FROM table_56007 WHERE "Home team" = 'north melbourne'
SELECT "Date" FROM "table_56007" WHERE "Home team" = 'north melbourne'