Ok, might take a couple goes, but we should be able to do this.
First step, adding the HTML:
add_action( 'generate_before_content', 'tu_add_custom_date' );
function tu_add_custom_date() {
if ( is_singular() ) {
return;
}
printf( '<div class="custom-date"><span class="day">%1$s</span><span class="month">%2$s</span></div>',
get_the_date( 'j' ),
get_the_date( 'M' )
);
}
Let me know when you get that added and we should be able to get the rest of the way with CSS ๐