CREATE TABLE table_77015 ("Round" FLOAT, "Circuit" TEXT, "Date" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Winning Team" TEXT)

On what date does Yuji Tachikawa have the fastest lap in round 1?
SELECT "Date" FROM table_77015 WHERE "Fastest Lap" = 'yuji tachikawa' AND "Round" = '1'
SELECT "Date" FROM "table_77015" WHERE "Fastest Lap" = 'yuji tachikawa' AND "Round" = '1'