def _get_wms_wcs_url_parameters(request, date):
        """  Returns parameters common dictionary for WMS and WCS request.

        :param request: OGC-type request with specified bounding box, cloud coverage for specific product.
        :type request: OgcRequest or GeopediaRequest
        :param date: acquisition date or None
        :type date: datetime.datetime or None
        :return:  dictionary with parameters
        :rtype: dict
        """
        params = {
            'BBOX': str(request.bbox.reverse()) if request.bbox.crs is CRS.WGS84 else str(request.bbox),
            'FORMAT': MimeType.get_string(request.image_format),
            'CRS': CRS.ogc_string(request.bbox.crs),
        }

        if date is not None:
            start_date = date if request.time_difference < datetime.timedelta(
                seconds=0) else date - request.time_difference
            end_date = date if request.time_difference < datetime.timedelta(
                seconds=0) else date + request.time_difference
            params['TIME'] = '{}/{}'.format(start_date.isoformat(), end_date.isoformat())

        return params