When does Aphrodite was born?

According to Hesiod Aphrodite was born when Cronus cut off Uranus's genitals and threw them into the sea, and she arose from the sea foam (aphros). However, according to Homer she was the daughter of Zeus and Dione and according to Plato these two accounts were related to two separate goddesses: Aphrodite Ourania and Aphrodite Pandemos.