get_the_date() WordPress Function

function get_the_date( $format = '', $post = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$_format = ! empty( $format ) ? $format : get_option( 'date_format' );

	$the_date = get_post_time( $_format, false, $post, true );

	/**
	 * Filters the date a post was published.
	 *
	 * @since 3.0.0
	 *
	 * @param string|int  $the_date Formatted date string or Unix timestamp if `$format` is 'U' or 'G'.
	 * @param string      $format   PHP date format.
	 * @param WP_Post     $post     The post object.
	 */
	return apply_filters( 'get_the_date', $the_date, $format, $post );
}