[Plugin: Widget Logic] Date before Title

which date, before which title – a widget’s title?

I’m sorry, it’s not clear to me what you are talking about. i googled both those terms and I found

http://ww.wp.xz.cn/extend/plugins/category-posts/screenshots/

is that what you are talking about? If so, looking at the code of that widget it looks like you may be after a content_filter to alter the HTML it outputs. The PHP looks like it makes something like

<li class="cat-post-item"><a class="post-title" …></a>…<p class="post-date">date_shown_here</p>…</li>

if you can give me some real world examples I can suggest some PHP text manipulation that would move the post-date <p> in front of the post-title