When is William Shakespeare's bithday?

The playwright William Shakespeare doesn't have a birthday, he's been dead for 500 years But he was born on Thursday April the 23rd, 1564.

... by the way he died on April 23, 1616... That was a Saturday (Using the Gregorian calendar).

Well if Shakespeare actually existed at all that is. Some theorise that Shakespeare was actually a pseudo-name for Sir Thomas Bacon or even the Duke of Essex.