This post will tell you how to edit your blog template. You need to edit your listing template. If that doesn't help you find your listing template then navigate to settings (cog in top right) -> website (in left sidebar) -> blog ->templates (tab) and then look for 'Template for listing pages' and click the edit button beside this.
Once you are into your listing template in design manager look for the title of your post, it should look something like this, and note depending on your blog template this could appear multiple times in the template so add your date code beneath each instance:
This post will tell you how to edit your blog template. You need to edit your listing template. If that doesn't help you find your listing template then navigate to settings (cog in top right) -> website (in left sidebar) -> blog ->templates (tab) and then look for 'Template for listing pages' and click the edit button beside this.
Once you are into your listing template in design manager look for the title of your post, it should look something like this, and note depending on your blog template this could appear multiple times in the template so add your date code beneath each instance: