Incorrect period end_time
Used versions: Python 2.7.3 Pandas 0.10.1

Code:
from pandas import Period
from datetime import datetime

Period(datetime(2013, 1, 1, 0, 0), freq='W-SAT')

outputs: Period('2012-12-30/2013-01-05', 'W-SAT') - correct

Period(datetime(2013, 1, 1, 0, 0), freq='W-SAT').end_time

outputs: Timestamp: 2013-01-11 23:59:59.999999999

Is it expected behaviour ? Week end on 2013-01-11 not on 2013-01-05 ? 
