diff --git a/CHANGELOG_LATEST.md b/CHANGELOG_LATEST.md
index 1740bfdbc..d65571213 100644
--- a/CHANGELOG_LATEST.md
+++ b/CHANGELOG_LATEST.md
@@ -32,6 +32,7 @@
 - min/max in web value setting
 - Extend customization to select if an entity is to be shown in the WebUI or forced as read-only [#317](https://github.com/emsesp/EMS-ESP32/issues/317)
 - Added Moduline 400 installation parameters [PR #449 by @kwertie01](https://github.com/emsesp/EMS-ESP32/pull/449)
+- Read time from IVT-controller [#439](https://github.com/emsesp/EMS-ESP32/issues/439)
 
 ### Fixed
 
@@ -66,7 +67,7 @@
 - removed system/pin command, new commands in analogsensors
 - system/info device-info split to name/version/brand
 - exclude list uses short-names, possible flags for web/api/mqtt excludes, readonly and favorite (selection not yet implemented)
-- thermostat clock formate date-time: dd.mm.yyyy hh:mm:ss
+- thermostat clock formate date-time: dd.mm.yyyy hh:mm
 - RC300 summermode as other thermostats `winter/summer` instead of `off/on`
 
 ## **BREAKING CHANGES:**
diff --git a/src/devices/controller.cpp b/src/devices/controller.cpp
index b30116d8e..f7b0b952f 100644
--- a/src/devices/controller.cpp
+++ b/src/devices/controller.cpp
@@ -24,6 +24,28 @@ REGISTER_FACTORY(Controller, EMSdevice::DeviceType::CONTROLLER);
 
 Controller::Controller(uint8_t device_type, uint8_t device_id, uint8_t product_id, const char * version, const std::string & name, uint8_t flags, uint8_t brand)
     : EMSdevice(device_type, device_id, product_id, version, name, flags, brand) {
+    // IVT broadcasts Thermostat time  from controller (0x09) if display is off.
+    register_telegram_type(0x06, F("RCTime"), false, MAKE_PF_CB(process_dateTime));
+    register_device_value(DeviceValueTAG::TAG_NONE, &dateTime_, DeviceValueType::STRING, nullptr, FL_(dateTime), DeviceValueUOM::NONE);
 }
 
+// process_dateTime - type 0x06 - date and time from a thermostat - 14 bytes long, IVT only
+void Controller::process_dateTime(std::shared_ptr<const Telegram> telegram) {
+    if (telegram->offset > 0 || telegram->message_length < 5) {
+        return;
+    }
+    char newdatetime[sizeof(dateTime_)];
+    // publich as dd.mm.yyyy hh:mmF
+    snprintf(newdatetime,
+             sizeof(dateTime_),
+             "%02d.%02d.%04d %02d:%02d",
+             telegram->message_data[3],
+             telegram->message_data[1] - 1,
+             (telegram->message_data[0] & 0x7F) + 2000,
+             telegram->message_data[2],
+             telegram->message_data[4]);
+    has_update(dateTime_, newdatetime, sizeof(dateTime_));
+}
+
+
 } // namespace emsesp
\ No newline at end of file
diff --git a/src/devices/controller.h b/src/devices/controller.h
index 76e11e59a..e9efb73af 100644
--- a/src/devices/controller.h
+++ b/src/devices/controller.h
@@ -26,6 +26,10 @@ namespace emsesp {
 class Controller : public EMSdevice {
   public:
     Controller(uint8_t device_type, uint8_t device_id, uint8_t product_id, const char * version, const std::string & name, uint8_t flags, uint8_t brand);
+
+    void process_dateTime(std::shared_ptr<const Telegram> telegram);
+
+    char dateTime_[25];
 };
 
 } // namespace emsesp
diff --git a/src/web/WebDataService.cpp b/src/web/WebDataService.cpp
index 7f331c9c5..b4d61dc65 100644
--- a/src/web/WebDataService.cpp
+++ b/src/web/WebDataService.cpp
@@ -77,7 +77,7 @@ void WebDataService::core_data(AsyncWebServerRequest * request) {
     // Ignore Contoller
     JsonArray devices = root.createNestedArray("devices");
     for (const auto & emsdevice : EMSESP::emsdevices) {
-        if (emsdevice && emsdevice->device_type() != EMSdevice::DeviceType::CONTROLLER) {
+        if (emsdevice && (emsdevice->device_type() != EMSdevice::DeviceType::CONTROLLER || emsdevice->count_entities() > 0)) {
             JsonObject obj = devices.createNestedObject();
             obj["i"]       = emsdevice->unique_id();        // a unique id
             obj["t"]       = emsdevice->device_type_name(); // type