CREATE TABLE table_54429 ("Congresswoman" TEXT, "State" TEXT, "Date of delivery" TEXT, "Mother's age" FLOAT, "Baby gender" TEXT)

What was the delivery date of Congresswoman Kirsten Gillibrand's baby boy?
SELECT "Date of delivery" FROM table_54429 WHERE "Baby gender" = 'boy' AND "Congresswoman" = 'kirsten gillibrand'
SELECT "Date of delivery" FROM "table_54429" WHERE "Baby gender" = 'boy' AND "Congresswoman" = 'kirsten gillibrand'