On what date is Jerilyn Britz the runner-up?
CREATE TABLE "lpga_tour_wins_24" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "date" FROM "lpga_tour_wins_24" WHERE "runner_s_up"='jerilyn britz';