The date is not appearing at the top of blog posts.
Its not a major issue, but adds additional space between title and blog post title.
To reduce space, do:
Blog Overview > Template > Customize > Advanced > Add CSS
'Add custom CSS' panel, add the following:
This reduces the space by 20 pixels.
To reduce gap further, try -50px or -80px.
Adjust till gap appears correct.
Click 'Apply to Blog' > 'Back to Blogger'
This will save settings and exit.