And it came to pass the third day, which was Pharaoh's birthday, that he made a feast unto all his servants: and he lifted up the head of the chief butler and of the chief baker among his servants. -- Genesis 40:20

But when Herod's birthday was kept, the daughter of Herodias danced before them, and pleased Herod. -- Matthew 14:6 (See also Mark 6:21))

The Pharaoh and KIng Herod had birthday parties, therefore you shouldn't. (If you do you'll be destroyed at Armageddon.)