diff --git a/include/classes/IoTItem.h b/include/classes/IoTItem.h
index cfdb33e2..5ff1e0fe 100644
--- a/include/classes/IoTItem.h
+++ b/include/classes/IoTItem.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <vector>
 #include "classes/IoTGpio.h"
 //#include "classes/IoTBench.h"
 
diff --git a/src/modules/virtual/Math/Math.cpp b/src/modules/virtual/Math/Math.cpp
index d726d2dc..979031f6 100644
--- a/src/modules/virtual/Math/Math.cpp
+++ b/src/modules/virtual/Math/Math.cpp
@@ -37,9 +37,16 @@ private:
         int h2 = selectToMarker(endTime, ":").toInt();
         int min2 = selectToMarkerLast(endTime, ":").toInt();
 
+        int sumMin1 = h1 * 60 + min1;
+        int sumMin2 = h2 * 60 + min2;
+
         int nowMinutes = _time_local.hour * 60 + _time_local.minute;
 
-        return nowMinutes >= h1 * 60 + min1 && nowMinutes <= h2 * 60 + min2;
+        if (sumMin1 <= sumMin2) {
+            return nowMinutes >= sumMin1 && nowMinutes <= sumMin2;
+        } else {
+            return nowMinutes >= sumMin1 && nowMinutes <= 24 * 60 || nowMinutes >= 0 && nowMinutes <= sumMin2;
+        }
     }
 
 
diff --git a/src/modules/virtual/Math/SimpleTimePeriod.json b/src/modules/virtual/Math/SimpleTimePeriod.json
new file mode 100644
index 00000000..1b402876
--- /dev/null
+++ b/src/modules/virtual/Math/SimpleTimePeriod.json
@@ -0,0 +1,57 @@
+{
+    "mark": "iotm",
+    "config": [
+        {
+            "global": 0,
+            "type": "Reading",
+            "subtype": "IoTMath",
+            "id": "math",
+            "widget": "anydataValue",
+            "page": "Ввод",
+            "descr": ""
+        },
+        {
+            "global": 0,
+            "type": "Reading",
+            "subtype": "Variable",
+            "id": "start",
+            "needSave": 0,
+            "widget": "inputTm",
+            "page": "Ввод",
+            "descr": "Введите время",
+            "int": "0",
+            "val": "02:00"
+        },
+        {
+            "global": 0,
+            "type": "Reading",
+            "subtype": "Variable",
+            "id": "stop",
+            "needSave": 0,
+            "widget": "inputTm",
+            "page": "Ввод",
+            "descr": "Введите время",
+            "int": "0",
+            "val": "02:00"
+        },
+        {
+            "global": 0,
+            "type": "Writing",
+            "subtype": "ButtonOut",
+            "needSave": 0,
+            "id": "led",
+            "widget": "toggle",
+            "page": "Ввод",
+            "descr": "Освещение",
+            "int": 0,
+            "inv": 0,
+            "pin": 2
+        }
+    ]
+}
+
+scenario=>if start | stop then {
+if math.nowInTimePeriod(start, stop) then {
+led = 1
+} else led = 0
+}
\ No newline at end of file