diff --git a/docs/05-5GC OMC restful intefaces.md b/docs/05-5GC OMC restful intefaces.md
index 46afdeb..6bc482e 100644
--- a/docs/05-5GC OMC restful intefaces.md	
+++ b/docs/05-5GC OMC restful intefaces.md	
@@ -1768,3 +1768,44 @@ Example:
       ]
   }
 ```
+
+## 11 系统管理
+
+### 11.1 OMC系统
+
+#### 11.1.1 获取OMC时间接口
+
+* Uri
+
+  ```uri
+  /api/rest/systemManagement/v1/elementType/OMC/objectType/time
+  ```
+* Relations
+  OMC  FE -> OMC BE
+* Params
+
+  NA
+* Method
+  GET
+* Body
+  NA
+* Return
+
+  ```json
+  // OMC time 信息
+  type OMCLocalTime struct {
+      Timestamp int64  `json:"timestamp"`   // 时间戳 (单位:毫秒)
+      TimeZone  int    `json:"timeZone"`    // 本地时区偏移（单位：秒）
+  }
+  ```
+  Expample:
+
+  ```json
+  {
+    "data": 
+      {
+        "timestamp": "1697101301164"
+        "timeZone": "28800"
+      }
+  }
+  ```