The blog post macro display incorrect age information on blog posts

When I create a new blog post the time informed is correct. But when I use the blog post macro, the time informed is incorrect.

Steps to reproduce:

• click in add >> blog post;
• after created the blog post and saved, this is the time informed: (16 and 30 minutes)
  
• in a new page, click in add macro and select blog post macro and save
• this is the time informed: (16 hours)