diff --git a/custom_components/xiaomi_gateway3/core/converters/mesh.py b/custom_components/xiaomi_gateway3/core/converters/mesh.py
index d4f65fcc..031fd98c 100644
--- a/custom_components/xiaomi_gateway3/core/converters/mesh.py
+++ b/custom_components/xiaomi_gateway3/core/converters/mesh.py
@@ -24,3 +24,31 @@ def encode(self, device: "XDevice", payload: dict, value: str):
             if v in "+xv":
                 mask |= 1 << i
         super().encode(device, payload, mask)
+
+
+class GiotTimePatternConv(BaseConv):
+    """
+    Period encoding:
+    8-digit number: HHMMhhmm
+        HH = start hour
+        MM = start minute
+        hh = end hour
+        mm = end minute
+    Example:
+        Period: 23:59 - 10:44
+        Encoded: 23591044
+    """
+
+    pattern = "^[0-2][0-9]:[0-5][0-9]-[0-2][0-9]:[0-5][0-9]$"
+
+    def decode(self, device: "XDevice", payload: dict, value: int):
+        value = str(value)
+        if len(value) != 8:
+            return
+        payload[self.attr] = f"{value[:2]}:{value[2:4]}-{value[4:6]}:{value[6:]}"
+
+    def encode(self, device: "XDevice", payload: dict, value: str):
+        value = value.replace(":", "").replace("-", "")
+        if len(value) != 8:
+            return
+        super().encode(device, payload, int(value))
diff --git a/custom_components/xiaomi_gateway3/core/devices.py b/custom_components/xiaomi_gateway3/core/devices.py
index 2ff11b7d..c0d455ab 100644
--- a/custom_components/xiaomi_gateway3/core/devices.py
+++ b/custom_components/xiaomi_gateway3/core/devices.py
@@ -2777,7 +2777,7 @@
         MathConv("turn_off_transit_sec", "number", mi="3.p.18", multiply=0.001, min=100, max=30000, step=100, round=1, entity=ENTITY_CONFIG),
         MathConv("change_transit_sec", "number", mi="3.p.19", multiply=0.001, min=100, max=30000, step=100, round=1, entity=ENTITY_CONFIG),
         MathConv("min_brightness", "number", mi="3.p.23", multiply=0.1, min=1, max=500, step=1, round=1, entity=ENTITY_CONFIG),
-        # TODO GiotTimePatternConv("night_light_time", "text", mi="3.p.16")
+        GiotTimePatternConv("night_light_time", "text", mi="3.p.16", entity=ENTITY_CONFIG)
         # Converter("fill_light_detection", "sensor", mi="3.p.20"),
         # Converter("fill_light_switch", "switch", mi="3.p.21"),
         # MathConv("min_bri_factory", "number", mi="3.p.16", min=1, max=500),
diff --git a/tests/test_conv_mesh.py b/tests/test_conv_mesh.py
index 8dfc5780..b0f567e5 100644
--- a/tests/test_conv_mesh.py
+++ b/tests/test_conv_mesh.py
@@ -12,3 +12,13 @@ def test_es1():
 
     p = device.encode({"induction_range": "0+0.8+1.5+2.3+3.0_3.8_4.5_5.3_6"})
     assert p == {"mi_spec": [{"piid": 2, "siid": 3, "value": 15}]}
+
+
+def test_11724():
+    device = XDevice(11724)
+
+    p = device.decode({"did": "123", "siid": 3, "piid": 16, "value": 23591044})
+    assert p == {"night_light_time": "23:59-10:44"}
+
+    p = device.encode({"night_light_time": "23:59-10:44"})
+    assert p == {"mi_spec": [{"siid": 3, "piid": 16, "value": 23591044}]}