CREATE TABLE table_20243 ("Date" TEXT, "Cover model" TEXT, "Centerfold model" TEXT, "Interview subject" TEXT, "20 Questions" TEXT, "Pictorials" TEXT)

Name the date of 20 questions for jimmy fallon
SELECT "Date" FROM table_20243 WHERE "20 Questions" = 'Jimmy Fallon'
SELECT "Date" FROM "table_20243" WHERE "20 Questions" = 'Jimmy Fallon'