Apparently someone has decided that the first day of the week in Canada is sunday, which is completely retarded. My week starts on monday, which I think is how most normal people think.<br />
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The problem is that my locale (via LANG) is set to fr_CA.UTF-8, and because of that the XFCE calendar (and some other apps) show sunday as the first day, and get me confused. On occasion this is a serious problem. I finally got off my butt and fixed this problem.<br />
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Step 1: edit <code>/usr/share/i18n/locales/fr_CA</code> and add the first_weekday line (the following is a snippet, the line I added is in bold):<br />
<pre>am_pm   &quot;&quot;;&quot;&quot;
t_fmt_ampm &quot;&quot;
date_fmt       &quot;&lt;U0025&gt;&lt;U0061&gt;&lt;U0020&gt;&lt;U0025&gt;&lt;U0062&gt;&lt;U0020&gt;&lt;U0025&gt;&lt;U0065&gt;/
&lt;U0020&gt;&lt;U0025&gt;&lt;U0048&gt;&lt;U003A&gt;&lt;U0025&gt;&lt;U004D&gt;&lt;U003A&gt;&lt;U0025&gt;&lt;U0053&gt;&lt;U0020&gt;/
&lt;U0025&gt;&lt;U005A&gt;&lt;U0020&gt;&lt;U0025&gt;&lt;U0059&gt;&quot;
<b>first_weekday 2</b>
END LC_TIME

LC_PAPER
copy &quot;en_CA&quot;
END LC_PAPER</pre><br />
Then extract a copy of the <code>UTF-8</code> charset:<br />
<pre>gunzip -c /usr/share/i18n/charmaps/UTF-8.gz &gt; /tmp/UTF-8</pre><br />
And finally, run this:<br />
<pre>localedef -i /usr/share/i18n/locales/fr_CA --charmap /tmp/UTF-8 /usr/lib/locale/fr_CA.utf8/</pre><br />
Now your first day has been changed and the apps should look right after a reboot.<br />
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If you want to do this for canadian english (en_CA) I expect you can do the same, just replace all the 'fr' with 'en' in the commands above.