Style aside single post differently in Twenty Eleven

I’m using a child theme based on Twenty Eleven. If you take a look at my blog, you’ll see that on the home page, my regular posts have the date in the upper right, and my asides (there’s one at the top of the page) do not:

http://www.scribblescribblescribble.com/blog/

But the permalink/single-post page for the aside does have the date. How do I remove it?

Thank you in advance!