Here’s An AdWords Script That Lets You Optimize Bids Every Hour Of The Day

/**
*
* Advanced ad scheduling
*
* This script will apply ad schedules and set the bid modifier for the schedule
* at each hour according to a multiplier timetable in a Google sheet.
*
* Version: 1.0
* brainlabsdigital.com
*
**/

function main() {

  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
  //Options
  
  //Be sure to set firstRun to false after running the script for the first time
  var firstRun = true;
  
  //The google sheet to use
  //The default value is the example sheet linked to in the article
  var spreadsheetUrl = "https://docs.google.com/a/brainlabsdigital.com/spreadsheets/d/1JDGBPs2qyGdHd94BRZw9lE9JFtoTaB2AmlL7xcmLx2g/edit#gid=0";
  
  //Optional parameters for filtering campaign names. 
  //Leave blank to use filters. The matching is case insensitive.
  var excludeCampaignNameContains = ""; //Select which campaigns to exclude. Leave blank to not exclude any campaigns.
  var includeCampaignNameContains = ""; //Select which campaigns to include. Leave blank to include all campaigns.
  
  //When you want to stop running the ad scheduling for good, set
  //the lastRun variable to true to remove all ad schedules.
  var lastRun = false;
  
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
  //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
  
  //Retrieving up hourly data
  var scheduleRange = "B2:H25";
  var accountName = AdWordsApp.currentAccount().getName();
  var spreadsheet = SpreadsheetApp.openByUrl(spreadsheetUrl);
  var sheet = spreadsheet.getSheetByName(accountName);
  var data = sheet.getRange(scheduleRange).getValues();
  
  var timeZone = AdWordsApp.currentAccount().getTimeZone();
  var date = new Date();
  var dayOfWeek = parseInt(Utilities.formatDate(date, timeZone, "uu")) - 1;
  var hour = parseInt(Utilities.formatDate(date, timeZone, "HH"));
  
  //This hour's bid multiplier.
  var thisHourMultiplier = data[hour][dayOfWeek];
  var lastHourCell = "I2";
  sheet.getRange(lastHourCell).setValue(thisHourMultiplier);
  
  //Initialise for use later.
  var weekDays = ["MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY", "SUNDAY"];
  var adScheduleCodes = [];
  
  //Dummy name to exclude
  if(excludeCampaignNameContains === ""){
    excludeCampaignNameContains += "#@%" + date + "~};";
  }
  
  var campaignIds = [];
  
  //Pull a list of all relevant campaign IDs in the account.
  var campaignIterator = AdWordsApp.campaigns()
  .withCondition('Name DOES_NOT_CONTAIN_IGNORE_CASE "' + excludeCampaignNameContains + '"')
  .withCondition('Name CONTAINS_IGNORE_CASE "' + includeCampaignNameContains + '"')
  .get();
  while(campaignIterator.hasNext()){
    var campaign = campaignIterator.next();
    var campaignId = campaign.getId();
    campaignIds.push(campaignId);
  }
  
  //Return if there are no campaigns.
  if(campaignIds.length === 0){
    Logger.log("There are no campaigns matching your criteria.");
    return;
  }
  
  //Remove all ad scheduling for the last run.
  if(lastRun){
    RemoveAdSchedules(campaignIds);
    return;
  }
  
  //Remove all existing ad scheduling and add new schedules for the first run.
  if(firstRun){
    RemoveAdSchedules(campaignIds);
    AddAdSchedules(campaignIds, weekDays);
	Logger.log("Set the firstRun variable to false");
  }
  
  //Populate the adScheduleCodes array with the ad schedule ID corresponding to the weekDays array. 
  var campaignIterator = AdWordsApp.campaigns()
  .withIds(campaignIds)
  .withLimit(1)
  .get();
  while(campaignIterator.hasNext()){
    var campaign = campaignIterator.next();
    var adSchedules = campaign.targeting().adSchedules().get();
	if(adSchedules.totalNumEntities() === 0) {
      Logger.log("Some campaigns do not have ad scheduling, please re-do the first run");
      return;
    }
    while(adSchedules.hasNext()){
      var adSchedule = adSchedules.next();
      var adScheduleDay = adSchedule.getDayOfWeek();
      var adScheduleId = adSchedule.getId();
      adScheduleCodes[weekDays.indexOf(adScheduleDay)] = adScheduleId;
    }
  }
  
  var adScheduleCode = adScheduleCodes[dayOfWeek];
  
  //Apply the ad schedule bid modifier
  ModifyAdSchedule(campaignIds, adScheduleCode, thisHourMultiplier);
  
  //Set yesterday's ad schedule to a 0% bid modifier
  if(hour === 1){
    var yesterdayIndex = dayOfWeek - 1;
    if(yesterdayIndex === -1 ) yesterdayIndex = 6;
    var yesterdayAdScheduleCode = adScheduleCodes[yesterdayIndex];
    ModifyAdSchedule(campaignIds, yesterdayAdScheduleCode, 1);
  }
  
}

/**
 * Function to add ad schedules for all campaigns in the account. The scheduling will be 
 * added as a whole-day period for every day specified in the passed parameter array and will
 * be added with a bid modifier of 0%.
 *
 * @param array days the array of days for which to add ad scheduling
 * @return void
 */
function AddAdSchedules(campaignIds, days){
  
  var campaignIterator = AdWordsApp.campaigns()
  .withIds(campaignIds)
  .get();
  while(campaignIterator.hasNext()){
    var campaign = campaignIterator.next();
    for(var i = 0; i < days.length; i++){
      campaign.addAdSchedule({
        dayOfWeek: days[i],
        startHour: 0,
        startMinute: 0,
        endHour: 24,
        endMinute: 0,
        bidModifier: 1
      });
    }
  }
}

/**
 * Function to remove all ad schedules from all campaigns refernced in the passed array.
 *
 * @param array campaignIds array of campaign IDs to remove ad scheduling from
 * @return void
 */
function RemoveAdSchedules(campaignIds) {
  
  var adScheduleIds = [];
  
  var report = AdWordsApp.report(
    'SELECT CampaignId, Id ' + 
    'FROM CAMPAIGN_AD_SCHEDULE_TARGET_REPORT ' +
    'WHERE CampaignId IN ["' + campaignIds.join('","')  + '"] ' +
    'DURING YESTERDAY');
  
  var rows = report.rows();
  while(rows.hasNext()){
    var row = rows.next();
    var adScheduleId = row['Id'];
    var campaignId = row['CampaignId'];
    adScheduleIds.push([campaignId,adScheduleId]);
  }
  
  var chunkedArray = [];
  var chunkSize = 50000;
  
  for(var i = 0; i < adScheduleIds.length; i += chunkSize){
    chunkedArray.push(adScheduleIds.slice(i, i + chunkSize));
  }
  
  for(var i = 0; i < chunkedArray.length; i++){
    
    var adScheduleArray = [];
    
    var adScheduleIterator = AdWordsApp.targeting()
    .adSchedules()
    .withIds(chunkedArray[i])
    .get();
    while (adScheduleIterator.hasNext()) {
      var adSchedule = adScheduleIterator.next();
      adScheduleArray.push(adSchedule);
    }
    
    for(var j = 0; j < adScheduleArray.length; j++){
      adScheduleArray[j].remove();
    }
  }
  
}

/**
 * Function to set the bid modifier for a specific ad schedule period for a set of campaigns.
 *
 * @param array campaignIds the array of campaign IDs to have thier ad schedules modified
 * @param int adScheduleCode the ID of the adschedule to be modified
 * @param float bidModifier the multiplicative bid modifier
 * @return void
 */
function ModifyAdSchedule(campaignIds, adScheduleCode, bidModifier){
  
  var adScheduleIds = [];
  
  for(var i = 0; i < campaignIds.length; i++){
    adScheduleIds.push([campaignIds[i],adScheduleCode]);
  }
  
  var adScheduleIterator = AdWordsApp.targeting()
  .adSchedules()
  .withIds(adScheduleIds)
  .get();
  while (adScheduleIterator.hasNext()) {
    var adSchedule = adScheduleIterator.next();
    adSchedule.setBidModifier(bidModifier);
  }
}