Jesus' birthday on 9/11?

[dUSt]

My friend said Jesus' birthday was on 9/11 because according to astronomers there was only like a 90 minute window where all the stars could have lined up like in the Biblical accounts.

Has anyone studied this?

[Luigi]

I've never heard anything about 9/11 being "real Christmas." And I don't know enough astronomy to verify or refute the claim. It does sound like a theory that emerged after 2001, and it smells like folklore. 

But here's a clear explanation of why the Catholic Church celebrates Christmas on December 25th. Six minutes. Take notes, because there's going to be a test...