:param timeperiod: as string in YYYYMMDD00 format
    :return string in YYYYMM0000 format

def day_to_month(timeperiod):
    """:param timeperiod: as string in YYYYMMDD00 format
    :return string in YYYYMM0000 format"""
    t = datetime.strptime(timeperiod, SYNERGY_DAILY_PATTERN)
    return t.strftime(SYNERGY_MONTHLY_PATTERN)