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<?php
/**
 * The Events Calendar: Add "Post Date" column to the wp-admin Events posts list.
 * 
 * @link https://gist.github.com/barryhughes/38d7131462bd3912e571d5e6f3b5762e
 */
add_action( 'manage_posts_custom_column', 'events_post_date_column', 10, 2 );
add_filter( 'manage_tribe_events_posts_columns', 'events_post_date_column_header' );

function events_post_date_column( $column_id, $post_id  ) {
	echo 'post_date' === $column_id ? get_the_date( '', $post_id ) : '';
}

function events_post_date_column_header( $headers ) {
	$headers['post_date'] = 'Post Date';
	return $headers;
}