:param years:   int delta of years from now
    :param days:    int delta of days from now
    :param hours:   int delta of hours from now
    :param minutes: int delta of minutes from now
    :param seconds: float delta of seconds from now
    :return:        str of the now timestamp

def now(years=0, days=0, hours=0, minutes=0, seconds=0):
    """
    :param years:   int delta of years from now
    :param days:    int delta of days from now
    :param hours:   int delta of hours from now
    :param minutes: int delta of minutes from now
    :param seconds: float delta of seconds from now
    :return:        str of the now timestamp
    """
    date_time = datetime.utcnow()
    date_time += timedelta(days=days + years * 365, hours=hours,
                           minutes=minutes, seconds=seconds)
    return datetime_to_str(date_time)