CREATE TABLE table_2371 ("Rd." FLOAT, "Race Title" TEXT, "Circuit" TEXT, "City / State" TEXT, "Date" TEXT, "Winner" TEXT, "Team" TEXT, "Report" TEXT)

What dates was the falken tasmania challenge race that had triple eight race engineering as the team?
SELECT "Date" FROM table_2371 WHERE "Team" = 'Triple Eight Race Engineering' AND "Race Title" = 'Falken Tasmania Challenge'
SELECT "Date" FROM "table_2371" WHERE "Race Title" = 'Falken Tasmania Challenge' AND "Team" = 'Triple Eight Race Engineering'