Powershell script to create recurring maintenance windows in PagerDuty

pagerduty-daily-maintenance.ps1

param (
    [int]$numberOfDaysForward = 365,
    [string]$requesterId = "XXXXXXXXx",  #pagerduty-userid
	[string]$apiKey = "XXXXXXXXXXXXXXX",  #pagerduty api-key
    [string]$pagerdutyUrl = "https://XXXXXXX.pagerduty.com", #https://[account-name].pagerduty.com
	[string]$description = "Daily Blackout Hours 2:30 to 4am", #description of maintenance window
	[string]$serviceIDs="'XXXXXX', 'XXXXXX', 'XXXXXX'", #serviceIds of services to set in maintenance "'ABC123', 'ABC100', 'ABC101'"
    [string]$start = "2014-07-07T02:30:00", # "yyyy-MM-ddTHH:mm:ss"
    [string]$end = "2014-07-07T04:00:00" # "yyyy-MM-ddTHH:mm:ss"   
 )


function Execute-HTTPPostCommand() {
    param(
        [string] $target = $null
    )
    $webRequest = [System.Net.WebRequest]::Create($target)
    $webRequest.ContentType = "application/json"
    $PostStr = [System.Text.Encoding]::UTF8.GetBytes($Post)
    $webrequest.ContentLength = $PostStr.Length
    $webRequest.ServicePoint.Expect100Continue = $false
   	$webRequest.Headers.Add("Authorization", "Token token=$apiKey");
    $webRequest.Method = "POST"

    $requestStream = $webRequest.GetRequestStream()
    $requestStream.Write($PostStr, 0,$PostStr.length)
    $requestStream.Close()

    [System.Net.WebResponse] $resp = $webRequest.GetResponse();
    $rs = $resp.GetResponseStream();
    [System.IO.StreamReader] $sr = New-Object System.IO.StreamReader -argumentList $rs;
    [string] $results = $sr.ReadToEnd();

    return $results;
}

$currentdt = [datetime]::ParseExact($start, "yyyy-MM-ddTHH:mm:ss", $null)
$currentEnddt = [datetime]::ParseExact($end, "yyyy-MM-ddTHH:mm:ss", $null)


#loop thorugh amount of days 
for ($j=1; $j -lt $numberOfDaysForward; $j++) 
    { 
    

        $currentdt = $currentdt.AddDays(1);
        $currentEnddt = $currentEnddt.AddDays(1);

        $s = $currentdt.ToString("yyyy-MM-ddTHH:mm:sszzzzZ")
        $e = $currentEnddt.ToString("yyyy-MM-ddTHH:mm:sszzzzZ")

        Write-Host (" From  " + $s + " to " + $e)     

        $post = "{    
              'maintenance_window': {
                'start_time': '$s',
                'end_time': '$e',
                'description': '$description',
                'service_ids': [
                  $serviceIDs
                ]
              },
              'requester_id': '$requesterId'
            }" 
        Write-Host  $post
        $URL = $pagerdutyUrl + "/api/v1/maintenance_windows"

        Execute-HTTPPostCommand $URL


    }

I am new to GitHub so I have no idea what I am doing, but I forked the script to add a $numberOfDaysToIncrement parameter. This will allow you to create the maintenance window, for example, every Sunday.