Hierarchy Dragon

Which astrological calendar time
Is represented by the sky serpent
The dragon of authority, a higher
Arch than the other buildings, 
Symbolizing through fire breaths
And scales of you know what 
How things will unfold, no matter
When your birthday might have
Been: listen carefully, because these
Terms and conditions will be 
Enforced to the letter at the claw
And tooth, while you look on and
Keep working under conditions
Chosen by reptilian logic and
Propagated by horoscope