Hi, I want to know my Exact zodiac sign.

I am born in 20th January 1989 at 10.55pm. Am I a Snake or a dragon? When I read "snake zodiac" I think that's me! My personality. Pretty confused please help! What career suit me best???
And...
And what is my true animal? I.e - day of birth. 20th (Friday)?
My True animal is - ???? (20th - Friday)
My secret animal Is - pig (10.55 pm)
My inner animal is - Ox (january)