diff --git a/src/knx/dpt.h b/src/knx/dpt.h
index f6dcef3..6a350eb 100644
--- a/src/knx/dpt.h
+++ b/src/knx/dpt.h
@@ -87,7 +87,7 @@
 #define DPT_Rain_Amount Dpt(9, 26)
 #define DPT_Value_Temp_F Dpt(9, 27)
 #define DPT_Value_Wsp_kmh Dpt(9, 28)
-#define DPT_TimeOfDay Dpt(10, 1)
+#define DPT_TimeOfDay Dpt(10, 1, 1)
 #define DPT_Date Dpt(11, 1)
 #define DPT_Value_4_Ucount Dpt(12, 1)
 #define DPT_Value_4_Count Dpt(13, 1)
diff --git a/src/knx/dptconvert.cpp b/src/knx/dptconvert.cpp
index f687533..e316873 100644
--- a/src/knx/dptconvert.cpp
+++ b/src/knx/dptconvert.cpp
@@ -416,6 +416,7 @@ int busValueToTime(const uint8_t* payload, size_t payload_length, const Dpt& dat
         case 1:
         {
             unsigned char hours = unsigned8FromPayload(payload, 0) & 0x1F;
+            unsigned char weekDay = (unsigned8FromPayload(payload, 0) & 0xE0) >> 5;
             unsigned char minutes = unsigned8FromPayload(payload, 1) & 0x3F;
             unsigned char seconds = unsigned8FromPayload(payload, 2) & 0x3F;
 
@@ -423,6 +424,7 @@ int busValueToTime(const uint8_t* payload, size_t payload_length, const Dpt& dat
                 return false;
             struct tm tmp = {0};
             tmp.tm_hour = hours;
+            tmp.tm_wday = weekDay;
             tmp.tm_min = minutes;
             tmp.tm_sec = seconds;
             value = tmp;