Phase of Moon calculation is wrong by more than a week

[ron mmi]

According to the U.S. Naval Observatory, the Full moon was either January 4 or 5, 2015
But my test using astral.py gives the phase of the moon as 23 instead of 14 or 15

http://aa.usno.navy.mil/cgi-bin/aa_phases.pl?year=2014&month=12&day=22&nump=52&format=p
http://aa.usno.navy.mil/rstt/onedaytable?form=1&ID=AA&year=2015&month=1&day=5&state=WA&place=seattle

Python 2.7.9 (default, Dec 10 2014, 12:24:55) [MSC v.1500 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>>
>>> import datetime
>>> from pytz import timezone
>>> from astral import Astral
>>>
>>> a = Astral()
>>> city = a['Seattle']
>>>
>>> date = datetime.date( 2015,01,05 )
>>>
>>> print( 'Phase of moon: %d' % city.moon_phase( date ) )
Phase of moon: 23
>>>