diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppNoLayersTemplateBase.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppNoLayersTemplateBase.cs
index e1279a775b..312181e721 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppNoLayersTemplateBase.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppNoLayersTemplateBase.cs
@@ -41,6 +41,11 @@ public abstract class AppNoLayersTemplateBase : AppTemplateBase
                 break;
         }
 
+        if (context.BuildArgs.DatabaseManagementSystem == DatabaseManagementSystem.PostgreSQL)
+        {
+            context.Symbols.Add("dbms:PostgreSQL");
+        }
+
         switch (context.BuildArgs.UiFramework)
         {
             case UiFramework.Angular:
diff --git a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppTemplateBase.cs b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppTemplateBase.cs
index 7d4aab5615..20b72cdc50 100644
--- a/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppTemplateBase.cs
+++ b/framework/src/Volo.Abp.Cli.Core/Volo/Abp/Cli/ProjectBuilding/Templates/App/AppTemplateBase.cs
@@ -103,6 +103,11 @@ public abstract class AppTemplateBase : TemplateInfo
             steps.Add(new RemoveProjectFromSolutionStep("MyCompanyName.MyProjectName.MongoDB"));
             steps.Add(new RemoveProjectFromSolutionStep("MyCompanyName.MyProjectName.MongoDB.Tests", projectFolderPath: "/aspnet-core/test/MyCompanyName.MyProjectName.MongoDB.Tests"));
         }
+
+        if (context.BuildArgs.DatabaseManagementSystem == DatabaseManagementSystem.PostgreSQL)
+        {
+            context.Symbols.Add("dbms:PostgreSQL");
+        }
     }
 
     protected void DeleteUnrelatedProjects(ProjectBuildContext context, List<ProjectBuildPipelineStep> steps)
diff --git a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Blazor.Server/Program.cs b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Blazor.Server/Program.cs
index 051587bb5c..0226e0a554 100644
--- a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Blazor.Server/Program.cs
+++ b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Blazor.Server/Program.cs
@@ -1,3 +1,4 @@
+using System;
 using MyCompanyName.MyProjectName.Blazor.Server;
 using MyCompanyName.MyProjectName.Data;
 using Serilog;
@@ -9,6 +10,11 @@ public class Program
 {
     public async static Task<int> Main(string[] args)
     {
+//<TEMPLATE-REMOVE IF-NOT='dbms:PostgreSQL'>
+        // https://www.npgsql.org/efcore/release-notes/6.0.html#opting-out-of-the-new-timestamp-mapping-logic
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+
+//</TEMPLATE-REMOVE>
         var loggerConfiguration = new LoggerConfiguration()
 #if DEBUG
             .MinimumLevel.Debug()
diff --git a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Host/Program.cs b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Host/Program.cs
index a9366b95fe..c4c428b90d 100644
--- a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Host/Program.cs
+++ b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Host/Program.cs
@@ -1,3 +1,4 @@
+using System;
 using MyCompanyName.MyProjectName.Data;
 using Serilog;
 using Serilog.Events;
@@ -8,6 +9,11 @@ public class Program
 {
     public async static Task<int> Main(string[] args)
     {
+//<TEMPLATE-REMOVE IF-NOT='dbms:PostgreSQL'>
+        // https://www.npgsql.org/efcore/release-notes/6.0.html#opting-out-of-the-new-timestamp-mapping-logic
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+
+//</TEMPLATE-REMOVE>
         var loggerConfiguration = new LoggerConfiguration()
 #if DEBUG
             .MinimumLevel.Debug()
diff --git a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Mvc/Program.cs b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Mvc/Program.cs
index e3b1aeed74..358f8dda73 100644
--- a/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Mvc/Program.cs
+++ b/templates/app-nolayers/aspnet-core/MyCompanyName.MyProjectName.Mvc/Program.cs
@@ -1,3 +1,4 @@
+using System;
 using MyCompanyName.MyProjectName.Data;
 using Serilog;
 using Serilog.Events;
@@ -9,6 +10,11 @@ public class Program
 {
     public async static Task<int> Main(string[] args)
     {
+//<TEMPLATE-REMOVE IF-NOT='dbms:PostgreSQL'>
+        // https://www.npgsql.org/efcore/release-notes/6.0.html#opting-out-of-the-new-timestamp-mapping-logic
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+
+//</TEMPLATE-REMOVE>
         var loggerConfiguration = new LoggerConfiguration()
 #if DEBUG
             .MinimumLevel.Debug()
diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameDbContextFactory.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameDbContextFactory.cs
index 01fdb39a61..ddeca6a250 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameDbContextFactory.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameDbContextFactory.cs
@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Design;
 using Microsoft.Extensions.Configuration;
@@ -11,6 +12,11 @@ public class MyProjectNameDbContextFactory : IDesignTimeDbContextFactory<MyProje
 {
     public MyProjectNameDbContext CreateDbContext(string[] args)
     {
+//<TEMPLATE-REMOVE IF-NOT='dbms:PostgreSQL'>
+        // https://www.npgsql.org/efcore/release-notes/6.0.html#opting-out-of-the-new-timestamp-mapping-logic
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+
+//</TEMPLATE-REMOVE>
         MyProjectNameEfCoreEntityExtensionMappings.Configure();
 
         var configuration = BuildConfiguration();
diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEntityFrameworkCoreModule.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEntityFrameworkCoreModule.cs
index 9cecbb904d..f655a22a24 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEntityFrameworkCoreModule.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.EntityFrameworkCore/EntityFrameworkCore/MyProjectNameEntityFrameworkCoreModule.cs
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System;
+using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.AuditLogging.EntityFrameworkCore;
 using Volo.Abp.BackgroundJobs.EntityFrameworkCore;
 using Volo.Abp.EntityFrameworkCore;
@@ -29,6 +30,11 @@ public class MyProjectNameEntityFrameworkCoreModule : AbpModule
 {
     public override void PreConfigureServices(ServiceConfigurationContext context)
     {
+//<TEMPLATE-REMOVE IF-NOT='dbms:PostgreSQL'>
+        // https://www.npgsql.org/efcore/release-notes/6.0.html#opting-out-of-the-new-timestamp-mapping-logic
+        AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+
+//</TEMPLATE-REMOVE>
         MyProjectNameEfCoreEntityExtensionMappings.Configure();
     }