Sorry! Take Two:
@Eriu @mintoro @Ion
In case you guys or anyone else is still trying to figure out how to display the date in Desk Mess template for Blogger, I think I’ve figured it out. Go to Layout->Edit HTML->Expand Widget Templates.
Then do an Edit->Find for “posted”. This should take you to the code for the timestamp. After the word “on” (stands alone), I pasted the following:
just before this part:
I had also changed my date format to July 31, 2009 before I did this (as I was trying some of the suggestions above), but I don’t think this is important or made a difference.
I hope this helps! No guarantee that it will (I don’t actually know HTML beyond fiddling), but if you check my page I use the Desk Mess template and it worked for me.