Find the timezone for a point in `query`.

        GeoNames always returns a timezone: if the point being queried
        doesn't have an assigned Olson timezone id, a ``pytz.FixedOffset``
        timezone is used to produce the :class:`geopy.timezone.Timezone`.

        .. versionadded:: 1.18.0

        :param query: The coordinates for which you want a timezone.
        :type query: :class:`geopy.point.Point`, list or tuple of (latitude,
            longitude), or string as "%(latitude)s, %(longitude)s"

        :param int timeout: Time, in seconds, to wait for the geocoding service
            to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
            exception. Set this only if you wish to override, on this call
            only, the value set during the geocoder's initialization.

        :rtype: :class:`geopy.timezone.Timezone`

def reverse_timezone(self, query, timeout=DEFAULT_SENTINEL):
        """
        Find the timezone for a point in `query`.

        GeoNames always returns a timezone: if the point being queried
        doesn't have an assigned Olson timezone id, a ``pytz.FixedOffset``
        timezone is used to produce the :class:`geopy.timezone.Timezone`.

        .. versionadded:: 1.18.0

        :param query: The coordinates for which you want a timezone.
        :type query: :class:`geopy.point.Point`, list or tuple of (latitude,
            longitude), or string as "%(latitude)s, %(longitude)s"

        :param int timeout: Time, in seconds, to wait for the geocoding service
            to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
            exception. Set this only if you wish to override, on this call
            only, the value set during the geocoder's initialization.

        :rtype: :class:`geopy.timezone.Timezone`
        """
        ensure_pytz_is_installed()

        try:
            lat, lng = self._coerce_point_to_string(query).split(',')
        except ValueError:
            raise ValueError("Must be a coordinate pair or Point")

        params = {
            "lat": lat,
            "lng": lng,
            "username": self.username,
        }

        url = "?".join((self.api_timezone, urlencode(params)))

        logger.debug("%s.reverse_timezone: %s", self.__class__.__name__, url)
        return self._parse_json_timezone(
            self._call_geocoder(url, timeout=timeout)
        )