Public/Get-DokuServerTime.ps1

function Get-DokuServerTime {
<#
    .SYNOPSIS
        Returns the current time from the remote wiki server as Unix timestamp

    .DESCRIPTION
        Returns the current time from the remote wiki server as Unix timestamp

    .PARAMETER Raw
        Output the raw response from the server in UNIX time rather than a DateTime

    .EXAMPLE
        PS C:\> $serverTime = Get-DokuServerTime

    .EXAMPLE
        PS C:\> $UnixserverTime = Get-DokuServerTime -Raw

    .OUTPUTS
        System.DateTime, System.Int32

    .NOTES
        AndyDLP - 2018-05-26
#>

    [CmdletBinding()]
    [OutputType([datetime], [int])]
    param()

    begin {}

    process {
        $APIResponse = Invoke-DokuApiCall -MethodName 'dokuwiki.getTime' -MethodParameters @()
        if ($APIResponse.CompletedSuccessfully -eq $true) {            
            [int]$RawDokuTime = ($APIResponse.XMLPayloadResponse | Select-Xml -XPath "//value/int").Node.InnerText
            $DateObject = New-Object PSObject -Property @{
                Server = $Script:DokuServer.Server
                UNIXTimestamp = $RawDokuTime
                ServerTime = ([datetime]'1970-01-01 00:00:00').AddSeconds($RawDokuTime)
            }
            $DateObject
        } elseif ($null -eq $APIResponse.ExceptionMessage) {
            Write-Error "Fault code: $($APIResponse.FaultCode) - Fault string: $($APIResponse.FaultString)"
        } else {
            Write-Error "Exception: $($APIResponse.ExceptionMessage)"
        }
    } # process

    end {}
}