diff --git a/src/FrontOffice.Main/Pages/Profile/Components/OrganizationChart.razor.cs b/src/FrontOffice.Main/Pages/Profile/Components/OrganizationChart.razor.cs
index 4f6ac05..22e34b0 100644
--- a/src/FrontOffice.Main/Pages/Profile/Components/OrganizationChart.razor.cs
+++ b/src/FrontOffice.Main/Pages/Profile/Components/OrganizationChart.razor.cs
@@ -1,3 +1,4 @@
+using DateTimeConverterCL;
 using FrontOffice.Main.Utilities;
 using Microsoft.AspNetCore.Components;
 using Microsoft.JSInterop;
@@ -108,7 +109,9 @@ public partial class OrganizationChart : IAsyncDisposable
                 isActive = n.IsActive,
                 isClubActive = n.IsClubActive,
                 activationWeekNumber = n.ActivationWeekNumber,
-                joinedAt = n.JoinedAt,
+                registeredAt = n.JoinedAt.HasValue
+                    ? n.JoinedAt.Value.ToLocalTime().MiladiToJalali()
+                    : "",
                 referralCode = n.ReferralCode,
                 packageName = n.PackageName ?? string.Empty
             }).ToArray();
diff --git a/src/FrontOffice.Main/Utilities/NetworkMembershipDtos.cs b/src/FrontOffice.Main/Utilities/NetworkMembershipDtos.cs
index a6c2128..54646a9 100644
--- a/src/FrontOffice.Main/Utilities/NetworkMembershipDtos.cs
+++ b/src/FrontOffice.Main/Utilities/NetworkMembershipDtos.cs
@@ -14,7 +14,7 @@ public class NetworkNodeDto
     public NetworkNodeDto? RightChild { get; set; }
     public int Level { get; set; }
     public bool IsActive { get; set; } = true;
-    public DateTime? JoinedAt { get; set; }
+    public DateTime? JoinedAt { get; set; } // تاریخ ثبت‌نام (UserCreated)
     public bool IsClubActive { get; set; }
     public string? ActivationWeekNumber { get; set; }
     /// <summary>
diff --git a/src/FrontOffice.Main/Utilities/NetworkMembershipService.cs b/src/FrontOffice.Main/Utilities/NetworkMembershipService.cs
index eb225d3..92e11df 100644
--- a/src/FrontOffice.Main/Utilities/NetworkMembershipService.cs
+++ b/src/FrontOffice.Main/Utilities/NetworkMembershipService.cs
@@ -147,7 +147,8 @@ public class NetworkMembershipService
             SilverLeftLegTotal = node.SilverLeftLegTotal,
             SilverRightLegTotal = node.SilverRightLegTotal,
             ActivationWeekNumber = node.ActivationWeekDefinitionId?.ToString(),
-            JoinedAt = node.JoinedAt?.ToDateTime(),
+            JoinedAt = node.UserCreated?.ToDateTime()
+                ?? node.JoinedAt?.ToDateTime(),
             LeftChild = MapNodeFromProto(node.LeftChild),
             RightChild = MapNodeFromProto(node.RightChild)
         };
diff --git a/src/FrontOffice.Main/wwwroot/css/org-chart.css b/src/FrontOffice.Main/wwwroot/css/org-chart.css
index 8a57707..b5124d8 100644
--- a/src/FrontOffice.Main/wwwroot/css/org-chart.css
+++ b/src/FrontOffice.Main/wwwroot/css/org-chart.css
@@ -118,6 +118,16 @@
     line-height: 1.2;
 }
 
+.node-registered-at {
+    font-size: 8px;
+    color: #6c757d;
+    margin-top: 1px;
+    line-height: 1.2;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
 .node-level-sm {
     font-size: 9px;
     color: #6c757d;
diff --git a/src/FrontOffice.Main/wwwroot/js/org-chart.js b/src/FrontOffice.Main/wwwroot/js/org-chart.js
index 0de2b93..19c56f5 100644
--- a/src/FrontOffice.Main/wwwroot/js/org-chart.js
+++ b/src/FrontOffice.Main/wwwroot/js/org-chart.js
@@ -38,7 +38,7 @@ window.OrgChart = {
                 .container('#' + containerId)
                 .data(data)
                 .nodeWidth((d) => 140)
-                .nodeHeight((d) => 85)
+                .nodeHeight((d) => 98)
                 .childrenMargin((d) => 50)
                 .compactMarginBetween((d) => 15)
                 .compactMarginPair((d) => 15)
@@ -86,6 +86,7 @@ window.OrgChart = {
                                 <div class="node-avatar-sm">${firstChar}</div>
                                 <div class="node-info">
                                     <div class="node-name-sm">${data.fullName || 'بدون نام'}</div>
+                                    ${data.registeredAt ? `<div class="node-registered-at">${data.registeredAt}</div>` : ''}
                                     <div class="node-level-sm">L${data.level || 0}${!isRoot ? ' • ' + (data.position === 'Left' ? 'چپ' : 'راست') : ''}</div>
                                     ${packageBadge}
                                     ${referralCodeHtml}
@@ -296,7 +297,7 @@ window.OrgChart = {
                 isActive: node.isActive !== false,
                 isClubActive: node.isClubActive || false,
                 activationWeekNumber: node.activationWeekNumber,
-                joinedAt: node.joinedAt
+                registeredAt: node.registeredAt || node.joinedAt || ''
             };
             
             result.push(flatNode);