Move date above post title

Place the_time function before the title function in your loop.

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<?php the_time('j F, Y') ?>
<?php the_title(); ?>
<?php the_content(); ?>
<?php endwhile; endif; ?>

Checkout the loop functions here:
https://codex.www.ads-software.com/The_Loop

And the time function here:
https://codex.www.ads-software.com/Function_Reference/the_time

I don’t know where to place it?

I use the Twenty Eleven theme.

Do not edit the theme itself. First create a child theme for your changes.

Agreed with esmi. After creating the child theme, you want to edit your index.php file for the home page or the content-single.php for your post loops.

How do I create a child theme?

– I’m new at WP!

Please see the page at the link I posted above.

Am I going to create it through my ftp server or where else?

You create it on your own computer using a plain text editor and then upload the new child theme’s folder using FTP.

I have created a child theme.

How can I move the date above the post title?