Office 365 health status monitoring problem

Hi,

I am monitoring office 365 services current health status through my application.
I am collecting past 30days event incident and maintenance data and sorting the event based on start time.
but through office 365 portal i am seeing current status is not based on event start time.
E.g- On service "Skype for business" one event happened on date 16/06/17 (with Start time:2017-06-16 04:00 (UTC) and End Time2017-06-16 17:30 (UTC)) but in portal
current status of skype of business is showing as per event happened on 11/06/17 (with Start time:2017-06-11 12:00 (UTC) and End Time : none.)

So, service current health status is not based on latest event occurred on services (as there is latest event present on with Start time:2017-06-16 04:00 (UTC) and End Time2017-06-16 17:30 (UTC))
So, please help me to find out how services current status is changing.
Is it based on  event END TIME ? is it possible to have two event running on same service with both have no event time ?
Here is my sample code:
 $username=XXXX
$password=
$secpasswd  = ConvertTo-SecureString $password -AsPlainText -Force
$cred   = New-Object System.Management.Automation.PSCredential ($username, $secpasswd)
$jsonPayload = (@{userName=$cred.username;password=$cred.GetNetworkCredential().password;} | convertto-json).tostring()

$cookie = (invoke-restmethod -contenttype "application/json" -method Post -uri "https://api.admin.microsoftonline.com/shdtenantcommunications.svc/Register" -body $jsonPayload).RegistrationCookie
$jsonPayload = (@{lastCookie=$cookie;locale="en-US";preferredEventTypes=@(0,1);pastDays=30} | convertto-json).tostring()
$events = (invoke-restmethod -contenttype "application/json" -method Post -uri "https://api.admin.microsoftonline.com/shdtenantcommunications.svc/GetEvents" -body $jsonPayload)
$sortedEvents = $events.Events | Sort-Object -Property StartTime -Descending
foreach ($event in $sortedEvents)
{
    $servicename = $event.AffectedServiceHealthStatus.servicename    
    $servicestatus = $event.AffectedServiceHealthStatus.Status
    $startTime = $event.StartTime.ToLocalTime()
    $endtime = $event.EndTime.ToLocalTime()
    Write-Host "Service affected: $servicename    Service status: $servicestatus    StartTime: $startTime    Endtime: $endtime"    
}