Error RSS feed on hebcal.com

Good morning,

We take from your website information about the next Sabbath by a RSS feed reader.
The information we present on our website http://www.beitkitov.org/.
We are generating link as follows:
http://www.hebcal.com/shabbat/ -> Rss feed
We obtain then the link:
http://www.hebcal.com/shabbat/?cfg=r&geonameid=293397&i=on&m=50&pubDate=0

So far it worked well but today mistakenly generated:

On http://www.hebcal.com presented data from rss feed are correct:

From the url
http://www.hebcal.com/shabbat/?cfg=r&geonameid=293397&i=on&m=50&pubDate=0

be cut string
&PubDate=0

url http://www.hebcal.com/shabbat/?cfg=r&geonameid=293397&i=on&m=50

(without & PubDate =0) shows the data correctly:

We use a standard rss reader, which is available as a technology blogger widget.

We would like to ask you to fix error :)