Twentyten: time in posts and numerate comments

The date time is set up in Settings in admin I believe

I don’t see any admin interface for this.

The way I’d do it is

1. First, set up a child theme for your modified version of TwentyTen.

2. Copy the twentyten_posted_on() function from the twentyten/functions.php to a new functions.php in your child theme.

3. In that function, the date/time posted information is generated here

sprintf( '<a href="%1$s" title="%2$s" rel="bookmark"><span class="entry-date">%3$s</span></a>',
			get_permalink(),
			esc_attr( get_the_time() ),
			get_the_date()
),

where the time is output as a title attribute on the link (i.e. if you hover over the date, you’ll see the time).

If you want the time displayed directly, change that first line to, say,

sprintf( '<a href="%1$s" rel="bookmark"><span class="entry-date">%3$s at %2$s</span></a>',

Hope that helps and you see how to modify things to get exactly what you want. [See also the examples in the PHP docs.]

@root: Incorrect!

You’ll need to edit the twentyten_comment() function in functions.php and change the parameters for get_comment_date in:

printf( __( '%1$s at %2$s', 'twentyten' ), get_comment_date(), get_comment_time() ); ?></a><?php edit_comment_link( __( '(Edit)', 'twentyten' ), ' ' );

But be warned that your customisations will be over-written the next time you upgrade WordPress or the theme. For this reason, it is recommended that you consider creating a child theme for your customisations.