CREATE TABLE table_57089 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When did Essendon play at home?
SELECT "Date" FROM table_57089 WHERE "Home team" = 'essendon'
SELECT "Date" FROM "table_57089" WHERE "Home team" = 'essendon'