twentythirteen_entry_date( bool $display = true ): string

610	function twentythirteen_entry_date( $display = true ) {611		if ( has_post_format( array( 'chat', 'status' ) ) ) {612			/* translators: 1: Post format name, 2: Date. */613			$format_prefix = _x( '%1$s on %2$s', '1: post format name. 2: date', 'twentythirteen' );614		} else {615			$format_prefix = '%2$s';616		}617 618		$date = sprintf(619			'<span class="date"><a href="%1$s" title="%2$s" rel="bookmark"><time class="entry-date" datetime="%3$s">%4$s</time></a></span>',620			esc_url( get_permalink() ),621			/* translators: %s: Post title. */622			esc_attr( sprintf( __( 'Permalink to %s', 'twentythirteen' ), the_title_attribute( 'echo=0' ) ) ),623			esc_attr( get_the_date( 'c' ) ),624			esc_html( sprintf( $format_prefix, get_post_format_string( get_post_format() ), get_the_date() ) )625		);626 627		if ( $display ) {628			echo $date;629		}630 631		return $date;632	}