diff --git a/yang-models/_3gpp-nr-nrm-ntnfunction.yang b/yang-models/_3gpp-nr-nrm-ntnfunction.yang
index 5abe98f624125a66e624c14cf807a0bc6f79877d..20dd62cf49cdec11839c67acd15f18ee4d892c7b 100644
--- a/yang-models/_3gpp-nr-nrm-ntnfunction.yang
+++ b/yang-models/_3gpp-nr-nrm-ntnfunction.yang
@@ -9,16 +9,19 @@ module _3gpp-nr-nrm-ntnfunction {
   import ietf-yang-types { prefix yang; }
   import _3gpp-common-managed-element { prefix me3gpp; }
   import _3gpp-common-subnetwork { prefix subnet3gpp; }
+  import _3gpp-common-yang-types { prefix types3gpp; }
   
   organization "3gpp SA5";
   contact "https://www.3gpp.org/DynaReport/TSG-WG--S5--officials.htm?Itemid=464";
   description "Implements support the C-SON function of Capacity and 
     Coverage optimization .
-    Copyright 2024, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, 
+    Copyright 2025, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, 
     TTA, TTC). All rights reserved.";
   reference "3GPP TS 28.541";
   
+  revision 2025-02-17 { reference CR-1479 ; }
   revision 2024-05-24 { reference CR-1273 ; } 
+
   
   feature NTNFunctionUnderSubNetwork {
     description "The NTNFunction shall be contained under SubNetwork"; 
@@ -241,6 +244,56 @@ module _3gpp-nr-nrm-ntnfunction {
     }
   }
   
+  grouping NTNEntityConfigGrp {
+    description "The attribute nTNConfEntity specifies an NTN related MOI.
+      The attribute nTNConfList optionally specifies configuration 
+      updates to be applied to the nTNConfEntity.  If no updates are provided
+      the value of nTNConfEntity is used without modification.";
+
+    leaf nTNConfEntity {
+      type types3gpp:DistinguishedName;
+      description "Specifies the DN of a specific NTN related MOI.
+        allowedValues:  DN of of the following MOIs:
+        EP_NgC, NRCellCU, NRCellDU, NRSectorCarrier,
+        SectorEquipmentFunction, NRCellRelation.";
+    }
+
+    list nTNConfigList {
+      uses types3gpp:nameValuePair;
+      key "name";
+      description "Specifies the list of configuration parameters and values.
+        The content of the attribute is a list of attributeName- attributeValue
+        pairs.  AttributeValues may be complex types.";
+    }    
+  }
+
+  grouping NTNTimeBasedConfigGrp {
+    description "Define configuration to be applied during a specified time
+      window.
+      The attribute timeWindow specifies the time window during which the 
+      specified configuration is applied.
+      The attribute nTNEntityConfigList specifies configuration updates applied
+      during the specified timeWindow.";
+
+    list timeWindow {
+      key idx;
+      leaf idx { type uint32 ; }
+      min-elements 1;
+      max-elements 1;
+      uses types3gpp:TimeWindowGrp;
+      description "It defines the time window.";
+    }
+
+    list nTNEntityConfigList {
+      key idx;
+      leaf idx { type uint32 ; }
+      uses NTNEntityConfigGrp;
+      min-elements 0;
+      description "It contains a list of configuration
+        updates to be applied to specified NTN entities.";
+    }
+  }
+  
   grouping NTNFunctionGrp {
     description "Represents the NTNFunction IOC";
     
@@ -270,7 +323,10 @@ module _3gpp-nr-nrm-ntnfunction {
   grouping NTNFunctionSubtreeGrp {
     list NTNFunction {
       description "This IOC contains attributes to support the non-terrestrial 
-        NR access.";
+        NR access.  This IOC contains instances of NTNTimeBasedConfig to support
+        time-based configuration of the following NTN related entities:  
+        EP_NgC, NRCellCU, NRCellDU, NRSectorCarrier, SectorEquipmentFunction, 
+        and NRCellRelation.";
       key id;
       max-elements 1;
       uses top3gpp:Top_Grp;
@@ -288,6 +344,16 @@ module _3gpp-nr-nrm-ntnfunction {
           uses EphemerisInfoSetGrp;
         }
       }
+
+      list NTNTimeBasedConfig {
+        description "This IOC represents the NTN time-based configuration.
+        ";
+        key id;
+        uses top3gpp:Top_Grp;
+        container attributes {
+          uses NTNTimeBasedConfigGrp;
+        }
+      }
     }
   }