category 1
     category 2
     category 3

2015
     category 2

function extend_date_archives_add_rewrite_rules($wp_rewrite) {
    $rules = array();
    $structures = array(
        $wp_rewrite->get_category_permastruct() . $wp_rewrite->get_date_permastruct(),
        $wp_rewrite->get_category_permastruct() . $wp_rewrite->get_month_permastruct(),
        $wp_rewrite->get_category_permastruct() . $wp_rewrite->get_year_permastruct(),
    );
    foreach( $structures as $s ){
        $rules += $wp_rewrite->generate_rewrite_rules($s);
    }
    $wp_rewrite->rules = $rules + $wp_rewrite->rules;
}
add_action('generate_rewrite_rules', 'extend_date_archives_add_rewrite_rules');