We don't know when he was born. If he is there, he was always there.
Apollo is said to be born on the 7th day of the Greek month Thargelion. (which is estimated to be around May 25th)
Apollo is the son of Zeus and Leto. But Hera, Zeus's wife was angry at Zeus's philandering. Leto could not find a safe place to give birth to her children for even the land feared Hera's wrath. But finally, she found the floating island of Delos and that's where Apollo and his sister Artemis was born.
The twins, Artemis and Apollo were born on the floating island of Delos, in the Aegan Sea. There was a prohibition given to their mother by the goddess Hera that she not give birth on either land or sea. Since Delos was a floating island it was not against Hera's prohibition.
Also, The island (Delos) was surrounded by swans. Afterwards, Zeus secured Delos to the bottom of the ocean. This island later became sacred to Apollo.
It is also stated that Hera kidnapped Ilithyia, the goddess of childbirth, to prevent Leto from going into labor. The other gods tricked Hera into letting her go by offering her a necklace, nine yards (8 m) long, of amber. Mythographers agree that Artemis was born first and then assisted with the birth of Apollo, or that Artemis was born one day before Apollo, on the island of Ortygia and that she helped Leto cross the sea to Delos the next day to give birth to Apollo. Apollo was born on the seventh day (ἡβδομαγενης) of the month Thargelion -according to Delian tradition-or of the month Bysios-according to Delphian tradition. The seventh and twentieth, the days of the new and full moon, were ever afterwards held sacred to him.
Apollo is not a Greek goddess; he is a Greek god, born of the Olympian god Zeus and the Titan born goddess Leto.
They say that Artemis and Apollo were born in different islands but the island were close...Artemis was born and she helped her mother,Leto, to born Apollo.
Apollo was not born, he only appeared and was immortal. If people lost faith in him he'd begin to fade away he wouldn't die.
Apollo was born to Zeus and Leto; with a twin sister, Artemis, goddess of the hunt.
She was born day before her twin brother Apollo.
Apollo Soucek was born in 1897.
Apollo Smile was born in 1967.
Argentina Apollo was born in 1938.
Apollo Faye was born in 1951.
Apollo Kironde was born in 1915.
Apollo Robbins was born in 1973.
Apollo was born as a Greek God, he was then born with his "powers".
Apollo was born on Delos by Leto.
Apollo Dukakis was born in Lowell, in Massachusetts, USA.
Apollo Poetry was born on 1983-11-14.
Apollo Mussin-Pushkin was born in 1760.
Apollo Quiboloy was born on 1950-04-25.