login_info_obj=login_info.objects.get(token=trackObj.token)
    now = datetime.datetime.now()
    print now
    one_day_before=now-timedelta(days=1)
    print one_day_before

    for obj in login_info_obj.location:
        location_date = obj.time
        if location_date < one_day_before :
            print "location_date",location_date
            login_info.update_one( pull__location=location_date)
   location=Tracking(time=trackObj.time,Longitude=trackObj.Longitude,Latitude=trackObj.Latitude)
    login_info_obj.location.append(location)
    login_info_obj.save()