CREATE TABLE table_1581 ("Game" FLOAT, "Date" TEXT, "Team" TEXT, "Score" TEXT, "High points" TEXT, "High rebounds" TEXT, "High assists" TEXT, "Location Attendance" TEXT, "Record" TEXT)

Which date did Chris Duhon (13) receive high assists?
SELECT "Date" FROM table_1581 WHERE "High assists" = 'Chris Duhon (13)'
SELECT "Date" FROM "table_1581" WHERE "High assists" = 'Chris Duhon (13)'