When was there a Time of 18:00, and a Set 1 of 22–25?
CREATE TABLE "nagano_round" (
  "date" text,
  "time" text,
  "score" text,
  "set_1" text,
  "set_2" text,
  "set_3" text,
  "total" text,
  "report" text
);
SELECT "date" FROM "nagano_round" WHERE "time"='18:00' AND "set_1"='22–25';