For Custom DataBase Tables plugin; this filter hook code is sample to modify the display format of any datetime column of the specified table. About the allowed the alias of datetime format, please refer: https://ka2.org/cdbt/v2/basic-info/plugin-options/general-setting/#datetime-formats

modify_datatime_format.php

<?php
// You should be optimize the variables of "$target_table" and "$target_column" in proportion to your table structure.

function cdbt_custom_datetime_format( $columns, $shortcode_name, $table ) {
  $target_table = 'your_table_name';
  $target_column = 'datetime_column_name';
  if ( $target_table === $table ) {
    foreach ( $columns as $_i => $_column ) {
      if ( $target_column === $_column['property'] ) {
        $_custom_column = sprintf( 'convert_datetime(rowData["%s"], ["%s"])', $target_column, 'F j, Y' );
        $columns[$_i]['customColumnRenderer'] = $_custom_column;
      }
    }
  }
  return $columns;
}
add_filter( 'cdbt_shortcode_custom_columns', 'cdbt_custom_datetime_format', 10, 3 );