CREATE TABLE table_59166 ("Tie no" TEXT, "Home team" TEXT, "Score" TEXT, "Away team" TEXT, "Date" TEXT)

On what date does Watford have a Tie no of 2?
SELECT "Date" FROM table_59166 WHERE "Home team" = 'watford' AND "Tie no" = '2'
SELECT "Date" FROM "table_59166" WHERE "Home team" = 'watford' AND "Tie no" = '2'