Highlight the dates column with readable date format. E.g. Format "Scheduled 2 weeks in advance" is more readable than "Scheduled 2019/12/18"

highlight-post-date.php

<?php
/**
 * Highlight the dates column with readable date format.
 *
 * @since 1.0.0
 * 
 * @todo Change the `prefix_` and with your own unique prefix.
 *
 * @param string  $t_time      The published time.
 * @param WP_Post $post        Post object.
 * @param string  $column_name The column name.
 * @param string  $mode        The list display mode ('excerpt' or 'list').
 * 
 * @return mixed
 */
if( ! function_exists( 'prefix_highlight_post_date_with_readable_format' ) ) :
	function prefix_highlight_post_date_with_readable_format( $t_time = '', $post = object, $date = '', $mode = '' ) {

		// If current list post type is not a `post`?
		// Then return default date format.
		if( 'post' !== $post->post_type ) {
			return $t_time;
		}

		$readable_date = human_time_diff( strtotime( $post->post_date ) );

		// Empty variable.
		$color = '';

		// If post status is `draft` then assign `red` color.
		if( 'future' === $post->post_status ) {
			$color = 'red';
			$readable_date = $readable_date . ' in advance'; // E.g. 2 weeks in advance
		}

		// // If post status is `publish` then assign `blue` color.
		if( 'publish' === $post->post_status ) {
			$color = 'blue';
			$readable_date = $readable_date . ' ago';  // E.g. 1 month ago
		}

		return '<span style="color: '.$color.'">' . $readable_date . '</span>';
   	}
   	add_filter( 'post_date_column_time', 'prefix_highlight_post_date_with_readable_format', 10, 4 );
endif;