Return the RFC822-formatted representation of a timezone-aware datetime
    with the UTC offset.

def local_rfcformat(dt):
    """Return the RFC822-formatted representation of a timezone-aware datetime
    with the UTC offset.
    """
    weekday = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'][dt.weekday()]
    month = [
        'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
        'Oct', 'Nov', 'Dec',
    ][dt.month - 1]
    tz_offset = dt.strftime('%z')
    return '%s, %02d %s %04d %02d:%02d:%02d %s' % (
        weekday, dt.day, month,
        dt.year, dt.hour, dt.minute, dt.second, tz_offset,
    )