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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def readDate(self):
 """ Reads a UTC date from the data stream. Client and servers are responsible for applying their own timezones. Date: C{0x0B T7 T6} .. C{T0 Z1 Z2 T7} to C{T0} form a 64 bit Big Endian number that specifies the number of nanoseconds that have passed since 1/1/1970 0:00 to the specified time. This format is UTC 1970. C{Z1} and C{Z0} for a 16 bit Big Endian number indicating the indicated time's timezone in minutes. """

        ms = self.stream.read_double() / 1000.0
        self.stream.read_short() # tz

        # Timezones are ignored
        d = util.get_datetime(ms)

        if self.timezone_offset:
            d = d + self.timezone_offset

        self.context.addObject(d)

        return d