Final answer:
The winners of the Newbery Medal and Caldecott Awards are announced annually in January at the American Library Association's annual conference. These awards recognize outstanding works in children's literature and promote literacy.
Step-by-step explanation:
The winners of the Newbery Medal and Caldecott Awards are announced annually. The Newbery Medal is awarded to the author of the most distinguished contribution to American literature for children, while the Caldecott Award is given to the artist of the most distinguished American picture book for children.
The winners of these awards are announced in January of each year. The announcements are made by the American Library Association (ALA), which holds its annual conference at different locations in the United States.
The awards are highly regarded and serve to recognize outstanding works in children's literature. They play a significant role in promoting literacy and encouraging excellence in writing and illustrating for young readers.