CREATE TABLE table_55782 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What day did North Melbourne play as the home team?
SELECT "Date" FROM table_55782 WHERE "Home team" = 'north melbourne'
SELECT "Date" FROM "table_55782" WHERE "Home team" = 'north melbourne'