var sheet = SpreadsheetApp.getActiveSheet();
var n_column = sheet.getLastColumn();
var n_row = sheet.getLastRow();
var data_range = sheet.getRange(2, 1, n_row - 1, n_column);
var data_base = data_range.getValues();
var date = data_base[2][5];
date = Utilities.formatDate(date, "GMT", "EEEE, d MMMM YYYY");
Logger.log(date);