diff --git a/GFramework.Core.Tests/logging/CompositeFilterTests.cs b/GFramework.Core.Tests/logging/CompositeFilterTests.cs
index ead293e..4e7416d 100644
--- a/GFramework.Core.Tests/logging/CompositeFilterTests.cs
+++ b/GFramework.Core.Tests/logging/CompositeFilterTests.cs
@@ -29,7 +29,7 @@ public class CompositeFilterTests
         var filter2 = new NamespaceFilter("GFramework");
         var compositeFilter = new CompositeFilter(filter1, filter2);
 
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
 
         Assert.That(compositeFilter.ShouldLog(entry), Is.True);
     }
@@ -41,7 +41,7 @@ public class CompositeFilterTests
         var filter2 = new NamespaceFilter("GFramework");
         var compositeFilter = new CompositeFilter(filter1, filter2);
 
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
 
         Assert.That(compositeFilter.ShouldLog(entry), Is.False);
     }
@@ -53,7 +53,7 @@ public class CompositeFilterTests
         var filter2 = new NamespaceFilter("MyApp");
         var compositeFilter = new CompositeFilter(filter1, filter2);
 
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
 
         Assert.That(compositeFilter.ShouldLog(entry), Is.False);
     }
@@ -66,19 +66,19 @@ public class CompositeFilterTests
         var compositeFilter = new CompositeFilter(levelFilter, namespaceFilter);
 
         // 满足所有条件
-        var entry1 = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry1 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
         Assert.That(compositeFilter.ShouldLog(entry1), Is.True);
 
         // 级别不满足
-        var entry2 = new LogEntry(DateTime.Now, LogLevel.Debug, "GFramework.Core", "Test", null, null);
+        var entry2 = new LogEntry(DateTime.UtcNow, LogLevel.Debug, "GFramework.Core", "Test", null, null);
         Assert.That(compositeFilter.ShouldLog(entry2), Is.False);
 
         // 命名空间不满足
-        var entry3 = new LogEntry(DateTime.Now, LogLevel.Info, "OtherNamespace", "Test", null, null);
+        var entry3 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "OtherNamespace", "Test", null, null);
         Assert.That(compositeFilter.ShouldLog(entry3), Is.False);
 
         // 都不满足
-        var entry4 = new LogEntry(DateTime.Now, LogLevel.Debug, "OtherNamespace", "Test", null, null);
+        var entry4 = new LogEntry(DateTime.UtcNow, LogLevel.Debug, "OtherNamespace", "Test", null, null);
         Assert.That(compositeFilter.ShouldLog(entry4), Is.False);
     }
 
@@ -93,10 +93,10 @@ public class CompositeFilterTests
         var outerComposite = new CompositeFilter(innerComposite, filter3);
 
         // 需要同时满足：Info 以上 AND GFramework 命名空间 AND Warning 以上
-        var entry1 = new LogEntry(DateTime.Now, LogLevel.Warning, "GFramework.Core", "Test", null, null);
+        var entry1 = new LogEntry(DateTime.UtcNow, LogLevel.Warning, "GFramework.Core", "Test", null, null);
         Assert.That(outerComposite.ShouldLog(entry1), Is.True);
 
-        var entry2 = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry2 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
         Assert.That(outerComposite.ShouldLog(entry2), Is.False); // 不满足 Warning
     }
 }
\ No newline at end of file
diff --git a/GFramework.Core.Tests/logging/ConsoleAppenderTests.cs b/GFramework.Core.Tests/logging/ConsoleAppenderTests.cs
index 9375562..c170fd2 100644
--- a/GFramework.Core.Tests/logging/ConsoleAppenderTests.cs
+++ b/GFramework.Core.Tests/logging/ConsoleAppenderTests.cs
@@ -39,7 +39,7 @@ public class ConsoleAppenderTests
     [Test]
     public void Append_ShouldWriteToWriter()
     {
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         _appender.Append(entry);
 
@@ -54,8 +54,8 @@ public class ConsoleAppenderTests
         var filter = new LogLevelFilter(LogLevel.Warning);
         var appender = new ConsoleAppender(new DefaultLogFormatter(), _stringWriter, useColors: false, filter: filter);
 
-        var infoEntry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Info message", null, null);
-        var warningEntry = new LogEntry(DateTime.Now, LogLevel.Warning, "TestLogger", "Warning message", null, null);
+        var infoEntry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Info message", null, null);
+        var warningEntry = new LogEntry(DateTime.UtcNow, LogLevel.Warning, "TestLogger", "Warning message", null, null);
 
         appender.Append(infoEntry);
         appender.Append(warningEntry);
@@ -70,7 +70,7 @@ public class ConsoleAppenderTests
     [Test]
     public void Flush_ShouldFlushWriter()
     {
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         _appender.Append(entry);
         _appender.Flush();
@@ -82,7 +82,7 @@ public class ConsoleAppenderTests
     [Test]
     public void Dispose_ShouldFlushWriter()
     {
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         _appender.Append(entry);
         _appender.Dispose();
@@ -96,7 +96,7 @@ public class ConsoleAppenderTests
     {
         for (int i = 0; i < 10; i++)
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", $"Message {i}", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", $"Message {i}", null, null);
             _appender.Append(entry);
         }
 
diff --git a/GFramework.Core.Tests/logging/DefaultLogFormatterTests.cs b/GFramework.Core.Tests/logging/DefaultLogFormatterTests.cs
index f997c1c..19aec51 100644
--- a/GFramework.Core.Tests/logging/DefaultLogFormatterTests.cs
+++ b/GFramework.Core.Tests/logging/DefaultLogFormatterTests.cs
@@ -36,7 +36,7 @@ public class DefaultLogFormatterTests
     public void Format_WithException_ShouldIncludeException()
     {
         var exception = new InvalidOperationException("Test exception");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Error, "TestLogger", "Error occurred", exception, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Error, "TestLogger", "Error occurred", exception, null);
 
         var result = _formatter.Format(entry);
 
@@ -53,7 +53,7 @@ public class DefaultLogFormatterTests
             ["UserId"] = 12345,
             ["UserName"] = "TestUser"
         };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "User action", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "User action", null, properties);
 
         var result = _formatter.Format(entry);
 
@@ -70,7 +70,7 @@ public class DefaultLogFormatterTests
         {
             ["Key1"] = null
         };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, properties);
 
         var result = _formatter.Format(entry);
 
@@ -86,7 +86,7 @@ public class DefaultLogFormatterTests
 
         for (int i = 0; i < levels.Length; i++)
         {
-            var entry = new LogEntry(DateTime.Now, levels[i], "TestLogger", "Test", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, levels[i], "TestLogger", "Test", null, null);
             var result = _formatter.Format(entry);
 
             Assert.That(result, Does.Contain(expectedStrings[i]));
@@ -97,7 +97,7 @@ public class DefaultLogFormatterTests
     public void Format_WithLongMessage_ShouldNotTruncate()
     {
         var longMessage = new string('A', 1000);
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", longMessage, null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", longMessage, null, null);
 
         var result = _formatter.Format(entry);
 
@@ -108,7 +108,7 @@ public class DefaultLogFormatterTests
     public void Format_WithSpecialCharacters_ShouldPreserveCharacters()
     {
         var message = "Test\nNew\tLine\r\nSpecial: <>&\"'";
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", message, null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", message, null, null);
 
         var result = _formatter.Format(entry);
 
diff --git a/GFramework.Core.Tests/logging/FileAppenderTests.cs b/GFramework.Core.Tests/logging/FileAppenderTests.cs
index c7d51e5..d1a7641 100644
--- a/GFramework.Core.Tests/logging/FileAppenderTests.cs
+++ b/GFramework.Core.Tests/logging/FileAppenderTests.cs
@@ -73,7 +73,7 @@ public class FileAppenderTests
     {
         using (var appender = new FileAppender(_testFilePath))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
             appender.Append(entry);
             appender.Flush();
         }
@@ -90,7 +90,7 @@ public class FileAppenderTests
         {
             for (int i = 0; i < 10; i++)
             {
-                var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", $"Message {i}", null, null);
+                var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", $"Message {i}", null, null);
                 appender.Append(entry);
             }
 
@@ -110,7 +110,7 @@ public class FileAppenderTests
     {
         using (var appender = new FileAppender(_testFilePath, new JsonLogFormatter()))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
             appender.Append(entry);
             appender.Flush();
         }
@@ -126,7 +126,7 @@ public class FileAppenderTests
         var appender = new FileAppender(_testFilePath);
         appender.Dispose();
 
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         Assert.Throws<ObjectDisposedException>(() => appender.Append(entry));
     }
@@ -137,7 +137,7 @@ public class FileAppenderTests
         // 第一次写入
         using (var appender1 = new FileAppender(_testFilePath))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "First message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "First message", null, null);
             appender1.Append(entry);
             appender1.Flush();
         }
@@ -145,7 +145,7 @@ public class FileAppenderTests
         // 第二次写入
         using (var appender2 = new FileAppender(_testFilePath))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Second message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Second message", null, null);
             appender2.Append(entry);
             appender2.Flush();
         }
@@ -161,7 +161,7 @@ public class FileAppenderTests
     {
         using (var appender = new FileAppender(_testFilePath))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
             appender.Append(entry);
             appender.Flush();
diff --git a/GFramework.Core.Tests/logging/JsonLogFormatterTests.cs b/GFramework.Core.Tests/logging/JsonLogFormatterTests.cs
index f056335..9c026a4 100644
--- a/GFramework.Core.Tests/logging/JsonLogFormatterTests.cs
+++ b/GFramework.Core.Tests/logging/JsonLogFormatterTests.cs
@@ -39,7 +39,7 @@ public class JsonLogFormatterTests
     public void Format_WithException_ShouldIncludeExceptionDetails()
     {
         var exception = new InvalidOperationException("Test exception");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Error, "TestLogger", "Error occurred", exception, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Error, "TestLogger", "Error occurred", exception, null);
 
         var result = _formatter.Format(entry);
 
@@ -60,7 +60,7 @@ public class JsonLogFormatterTests
             ["UserName"] = "TestUser",
             ["IsActive"] = true
         };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "User action", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "User action", null, properties);
 
         var result = _formatter.Format(entry);
 
@@ -98,7 +98,7 @@ public class JsonLogFormatterTests
             ["Key1"] = null,
             ["Key2"] = "value"
         };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, properties);
 
         var result = _formatter.Format(entry);
 
@@ -132,7 +132,7 @@ public class JsonLogFormatterTests
 
         for (int i = 0; i < levels.Length; i++)
         {
-            var entry = new LogEntry(DateTime.Now, levels[i], "TestLogger", "Test", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, levels[i], "TestLogger", "Test", null, null);
             var result = _formatter.Format(entry);
 
             var doc = JsonDocument.Parse(result);
@@ -144,7 +144,7 @@ public class JsonLogFormatterTests
     public void Format_WithSpecialCharacters_ShouldEscapeCorrectly()
     {
         var message = "Test \"quoted\" and \n newline";
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", message, null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", message, null, null);
 
         var result = _formatter.Format(entry);
 
@@ -178,7 +178,7 @@ public class JsonLogFormatterTests
             ["Null"] = null,
             ["Array"] = new[] { 1, 2, 3 }
         };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test", null, properties);
 
         var result = _formatter.Format(entry);
 
diff --git a/GFramework.Core.Tests/logging/LogEntryTests.cs b/GFramework.Core.Tests/logging/LogEntryTests.cs
index 2e51b93..4e08d38 100644
--- a/GFramework.Core.Tests/logging/LogEntryTests.cs
+++ b/GFramework.Core.Tests/logging/LogEntryTests.cs
@@ -12,7 +12,7 @@ public class LogEntryTests
     [Test]
     public void Constructor_WithAllParameters_ShouldCreateEntry()
     {
-        var timestamp = DateTime.Now;
+        var timestamp = DateTime.UtcNow;
         var properties = new Dictionary<string, object?> { ["Key1"] = "Value1" };
         var exception = new InvalidOperationException("Test");
 
@@ -29,7 +29,7 @@ public class LogEntryTests
     [Test]
     public void Constructor_WithNullException_ShouldWork()
     {
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         Assert.That(entry.Exception, Is.Null);
     }
@@ -37,7 +37,7 @@ public class LogEntryTests
     [Test]
     public void Constructor_WithNullProperties_ShouldWork()
     {
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         Assert.That(entry.Properties, Is.Null);
     }
@@ -48,7 +48,7 @@ public class LogEntryTests
         LogContext.Clear();
         using (LogContext.Push("ContextKey", "ContextValue"))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
             var allProps = entry.GetAllProperties();
 
@@ -64,7 +64,7 @@ public class LogEntryTests
     {
         LogContext.Clear();
         var properties = new Dictionary<string, object?> { ["PropKey"] = "PropValue" };
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, properties);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, properties);
 
         var allProps = entry.GetAllProperties();
 
@@ -79,7 +79,7 @@ public class LogEntryTests
         using (LogContext.Push("ContextKey", "ContextValue"))
         {
             var properties = new Dictionary<string, object?> { ["PropKey"] = "PropValue" };
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, properties);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, properties);
 
             var allProps = entry.GetAllProperties();
 
@@ -98,7 +98,7 @@ public class LogEntryTests
         using (LogContext.Push("Key1", "ContextValue"))
         {
             var properties = new Dictionary<string, object?> { ["Key1"] = "PropValue" };
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, properties);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, properties);
 
             var allProps = entry.GetAllProperties();
 
@@ -113,7 +113,7 @@ public class LogEntryTests
     public void GetAllProperties_WithEmptyPropertiesAndEmptyContext_ShouldReturnEmpty()
     {
         LogContext.Clear();
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         var allProps = entry.GetAllProperties();
 
@@ -123,7 +123,7 @@ public class LogEntryTests
     [Test]
     public void RecordEquality_WithSameValues_ShouldBeEqual()
     {
-        var timestamp = DateTime.Now;
+        var timestamp = DateTime.UtcNow;
         var properties = new Dictionary<string, object?> { ["Key1"] = "Value1" };
 
         var entry1 = new LogEntry(timestamp, LogLevel.Info, "TestLogger", "Test message", null, properties);
@@ -135,7 +135,7 @@ public class LogEntryTests
     [Test]
     public void RecordEquality_WithDifferentValues_ShouldNotBeEqual()
     {
-        var timestamp = DateTime.Now;
+        var timestamp = DateTime.UtcNow;
 
         var entry1 = new LogEntry(timestamp, LogLevel.Info, "TestLogger", "Test message 1", null, null);
         var entry2 = new LogEntry(timestamp, LogLevel.Info, "TestLogger", "Test message 2", null, null);
diff --git a/GFramework.Core.Tests/logging/LogLevelFilterTests.cs b/GFramework.Core.Tests/logging/LogLevelFilterTests.cs
index fcc86b7..3bdaec3 100644
--- a/GFramework.Core.Tests/logging/LogLevelFilterTests.cs
+++ b/GFramework.Core.Tests/logging/LogLevelFilterTests.cs
@@ -14,7 +14,7 @@ public class LogLevelFilterTests
     public void ShouldLog_WithLevelAboveMinimum_ShouldReturnTrue()
     {
         var filter = new LogLevelFilter(LogLevel.Info);
-        var entry = new LogEntry(DateTime.Now, LogLevel.Warning, "TestLogger", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Warning, "TestLogger", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -23,7 +23,7 @@ public class LogLevelFilterTests
     public void ShouldLog_WithLevelEqualToMinimum_ShouldReturnTrue()
     {
         var filter = new LogLevelFilter(LogLevel.Info);
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -32,7 +32,7 @@ public class LogLevelFilterTests
     public void ShouldLog_WithLevelBelowMinimum_ShouldReturnFalse()
     {
         var filter = new LogLevelFilter(LogLevel.Info);
-        var entry = new LogEntry(DateTime.Now, LogLevel.Debug, "TestLogger", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Debug, "TestLogger", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.False);
     }
@@ -42,12 +42,12 @@ public class LogLevelFilterTests
     {
         var filter = new LogLevelFilter(LogLevel.Warning);
 
-        var traceEntry = new LogEntry(DateTime.Now, LogLevel.Trace, "TestLogger", "Test", null, null);
-        var debugEntry = new LogEntry(DateTime.Now, LogLevel.Debug, "TestLogger", "Test", null, null);
-        var infoEntry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test", null, null);
-        var warningEntry = new LogEntry(DateTime.Now, LogLevel.Warning, "TestLogger", "Test", null, null);
-        var errorEntry = new LogEntry(DateTime.Now, LogLevel.Error, "TestLogger", "Test", null, null);
-        var fatalEntry = new LogEntry(DateTime.Now, LogLevel.Fatal, "TestLogger", "Test", null, null);
+        var traceEntry = new LogEntry(DateTime.UtcNow, LogLevel.Trace, "TestLogger", "Test", null, null);
+        var debugEntry = new LogEntry(DateTime.UtcNow, LogLevel.Debug, "TestLogger", "Test", null, null);
+        var infoEntry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test", null, null);
+        var warningEntry = new LogEntry(DateTime.UtcNow, LogLevel.Warning, "TestLogger", "Test", null, null);
+        var errorEntry = new LogEntry(DateTime.UtcNow, LogLevel.Error, "TestLogger", "Test", null, null);
+        var fatalEntry = new LogEntry(DateTime.UtcNow, LogLevel.Fatal, "TestLogger", "Test", null, null);
 
         Assert.That(filter.ShouldLog(traceEntry), Is.False);
         Assert.That(filter.ShouldLog(debugEntry), Is.False);
diff --git a/GFramework.Core.Tests/logging/NamespaceFilterTests.cs b/GFramework.Core.Tests/logging/NamespaceFilterTests.cs
index 2765046..7feb93e 100644
--- a/GFramework.Core.Tests/logging/NamespaceFilterTests.cs
+++ b/GFramework.Core.Tests/logging/NamespaceFilterTests.cs
@@ -26,7 +26,7 @@ public class NamespaceFilterTests
     public void ShouldLog_WithMatchingNamespace_ShouldReturnTrue()
     {
         var filter = new NamespaceFilter("GFramework.Core", "MyApp");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -35,7 +35,7 @@ public class NamespaceFilterTests
     public void ShouldLog_WithNonMatchingNamespace_ShouldReturnFalse()
     {
         var filter = new NamespaceFilter("GFramework.Core", "MyApp");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "OtherNamespace", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "OtherNamespace", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.False);
     }
@@ -44,7 +44,7 @@ public class NamespaceFilterTests
     public void ShouldLog_WithExactMatch_ShouldReturnTrue()
     {
         var filter = new NamespaceFilter("GFramework.Core");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -53,7 +53,7 @@ public class NamespaceFilterTests
     public void ShouldLog_WithPrefixMatch_ShouldReturnTrue()
     {
         var filter = new NamespaceFilter("GFramework");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -62,7 +62,7 @@ public class NamespaceFilterTests
     public void ShouldLog_IsCaseInsensitive()
     {
         var filter = new NamespaceFilter("gframework.core");
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry), Is.True);
     }
@@ -72,10 +72,10 @@ public class NamespaceFilterTests
     {
         var filter = new NamespaceFilter("GFramework.Core", "MyApp.Services", "ThirdParty");
 
-        var entry1 = new LogEntry(DateTime.Now, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
-        var entry2 = new LogEntry(DateTime.Now, LogLevel.Info, "MyApp.Services.UserService", "Test", null, null);
-        var entry3 = new LogEntry(DateTime.Now, LogLevel.Info, "ThirdParty.Library", "Test", null, null);
-        var entry4 = new LogEntry(DateTime.Now, LogLevel.Info, "OtherNamespace", "Test", null, null);
+        var entry1 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "GFramework.Core.Logging", "Test", null, null);
+        var entry2 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "MyApp.Services.UserService", "Test", null, null);
+        var entry3 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "ThirdParty.Library", "Test", null, null);
+        var entry4 = new LogEntry(DateTime.UtcNow, LogLevel.Info, "OtherNamespace", "Test", null, null);
 
         Assert.That(filter.ShouldLog(entry1), Is.True);
         Assert.That(filter.ShouldLog(entry2), Is.True);
diff --git a/GFramework.Core.Tests/logging/RollingFileAppenderTests.cs b/GFramework.Core.Tests/logging/RollingFileAppenderTests.cs
index cdeeb7c..09c70ab 100644
--- a/GFramework.Core.Tests/logging/RollingFileAppenderTests.cs
+++ b/GFramework.Core.Tests/logging/RollingFileAppenderTests.cs
@@ -59,7 +59,7 @@ public class RollingFileAppenderTests
             // 写入足够多的日志触发轮转
             for (int i = 0; i < 20; i++)
             {
-                var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger",
+                var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger",
                     $"This is a test message number {i} with some padding to increase size", null, null);
                 appender.Append(entry);
             }
@@ -81,7 +81,7 @@ public class RollingFileAppenderTests
             // 写入大量日志触发多次轮转
             for (int i = 0; i < 50; i++)
             {
-                var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger",
+                var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger",
                     $"This is a test message number {i} with some padding to increase size significantly", null, null);
                 appender.Append(entry);
             }
@@ -100,7 +100,7 @@ public class RollingFileAppenderTests
         {
             for (int i = 0; i < 30; i++)
             {
-                var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger",
+                var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger",
                     $"Test message {i} with padding to trigger rolling", null, null);
                 appender.Append(entry);
             }
@@ -124,7 +124,7 @@ public class RollingFileAppenderTests
         var appender = new RollingFileAppender(_testFilePath);
         appender.Dispose();
 
-        var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+        var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
         Assert.Throws<ObjectDisposedException>(() => appender.Append(entry));
     }
@@ -136,7 +136,7 @@ public class RollingFileAppenderTests
         {
             for (int i = 0; i < 10; i++)
             {
-                var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger",
+                var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger",
                     "This is a longer message to trigger rolling more frequently", null, null);
                 appender.Append(entry);
             }
@@ -153,7 +153,7 @@ public class RollingFileAppenderTests
     {
         using (var appender = new RollingFileAppender(_testFilePath))
         {
-            var entry = new LogEntry(DateTime.Now, LogLevel.Info, "TestLogger", "Test message", null, null);
+            var entry = new LogEntry(DateTime.UtcNow, LogLevel.Info, "TestLogger", "Test message", null, null);
 
             appender.Append(entry);
             appender.Flush();
diff --git a/GFramework.Core/logging/ConsoleLogger.cs b/GFramework.Core/logging/ConsoleLogger.cs
index 468a35b..091c290 100644
--- a/GFramework.Core/logging/ConsoleLogger.cs
+++ b/GFramework.Core/logging/ConsoleLogger.cs
@@ -34,7 +34,7 @@ public sealed class ConsoleLogger(
     /// <param name="exception">异常信息，可为空</param>
     protected override void Write(LogLevel level, string message, Exception? exception)
     {
-        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var timestamp = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff");
         var levelStr = LevelStrings[(int)level];
         var log = $"[{timestamp}] {levelStr} [{Name()}] {message}";
 
diff --git a/GFramework.Game.Abstractions/setting/data/AudioSettings.cs b/GFramework.Game.Abstractions/setting/data/AudioSettings.cs
index 56651ce..15b75fe 100644
--- a/GFramework.Game.Abstractions/setting/data/AudioSettings.cs
+++ b/GFramework.Game.Abstractions/setting/data/AudioSettings.cs
@@ -39,7 +39,7 @@ public class AudioSettings : ISettingsData
     /// <summary>
     ///     获取设置数据最后修改的时间
     /// </summary>
-    public DateTime LastModified { get; } = DateTime.Now;
+    public DateTime LastModified { get; } = DateTime.UtcNow;
 
     /// <summary>
     ///     从指定的数据源加载音频设置
diff --git a/GFramework.Game.Abstractions/setting/data/GraphicsSettings.cs b/GFramework.Game.Abstractions/setting/data/GraphicsSettings.cs
index ba0bfef..63213a1 100644
--- a/GFramework.Game.Abstractions/setting/data/GraphicsSettings.cs
+++ b/GFramework.Game.Abstractions/setting/data/GraphicsSettings.cs
@@ -38,7 +38,7 @@ public class GraphicsSettings : ISettingsData
     /// <summary>
     ///     获取设置数据最后修改的时间
     /// </summary>
-    public DateTime LastModified { get; } = DateTime.Now;
+    public DateTime LastModified { get; } = DateTime.UtcNow;
 
     /// <summary>
     ///     从指定的数据源加载图形设置
diff --git a/GFramework.Game.Abstractions/setting/data/LocalizationSettings.cs b/GFramework.Game.Abstractions/setting/data/LocalizationSettings.cs
index 1f11d33..72fe044 100644
--- a/GFramework.Game.Abstractions/setting/data/LocalizationSettings.cs
+++ b/GFramework.Game.Abstractions/setting/data/LocalizationSettings.cs
@@ -42,7 +42,7 @@ public class LocalizationSettings : ISettingsData
     /// <summary>
     ///     获取设置数据最后修改的时间
     /// </summary>
-    public DateTime LastModified { get; } = DateTime.Now;
+    public DateTime LastModified { get; } = DateTime.UtcNow;
 
     /// <summary>
     ///     从指定的数据源加载本地化设置
diff --git a/GFramework.Godot/logging/GodotLogger.cs b/GFramework.Godot/logging/GodotLogger.cs
index e4642bc..8a0cfdb 100644
--- a/GFramework.Godot/logging/GodotLogger.cs
+++ b/GFramework.Godot/logging/GodotLogger.cs
@@ -36,7 +36,7 @@ public sealed class GodotLogger(
     protected override void Write(LogLevel level, string message, Exception? exception)
     {
         // 构造时间戳和日志前缀
-        var timestamp = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff");
+        var timestamp = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff");
         var levelStr = LevelStrings[(int)level];
         var logPrefix = $"[{timestamp}] {levelStr} [{Name()}]";
 
diff --git a/docs/zh-CN/best-practices/architecture-patterns.md b/docs/zh-CN/best-practices/architecture-patterns.md
index 774564c..a0b6b7d 100644
--- a/docs/zh-CN/best-practices/architecture-patterns.md
+++ b/docs/zh-CN/best-practices/architecture-patterns.md
@@ -1012,7 +1012,7 @@ public class SaveSystem : AbstractSystem
             Level = 1,
             Health = 100,
             Position = Vector3.Zero,
-            CreatedAt = DateTime.Now
+            CreatedAt = DateTime.UtcNow
         };
     }
 }
diff --git a/docs/zh-CN/core/events.md b/docs/zh-CN/core/events.md
index 328bd4d..3509f31 100644
--- a/docs/zh-CN/core/events.md
+++ b/docs/zh-CN/core/events.md
@@ -439,7 +439,7 @@ public class EventBridge : AbstractSystem
             this.SendEvent(new PublicPlayerDiedEvent
             {
                 PlayerId = e.Id,
-                Timestamp = DateTime.Now
+                Timestamp = DateTime.UtcNow
             });
         });
     }
diff --git a/docs/zh-CN/core/logging.md b/docs/zh-CN/core/logging.md
index 2699d72..faff9bf 100644
--- a/docs/zh-CN/core/logging.md
+++ b/docs/zh-CN/core/logging.md
@@ -118,7 +118,7 @@ public class CustomLogger : AbstractLogger
     protected override void Write(LogLevel level, string message, Exception? exception)
     {
         // 自定义日志输出逻辑
-        var logMessage = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss}] [{level}] {message}";
+        var logMessage = $"[{DateTime.UtcNow:yyyy-MM-dd HH:mm:ss}] [{level}] {message}";
         if (exception != null)
             logMessage += $"\n{exception}";
         
diff --git a/docs/zh-CN/core/utility.md b/docs/zh-CN/core/utility.md
index f7ff3bf..60a9f1d 100644
--- a/docs/zh-CN/core/utility.md
+++ b/docs/zh-CN/core/utility.md
@@ -432,7 +432,7 @@ public class LogUtility : IUtility
             _ => ""
         };
         
-        string timestamp = DateTime.Now.ToString("HH:mm:ss");
+        string timestamp = DateTime.UtcNow.ToString("HH:mm:ss");
         GD.Print($"{timestamp} {prefix} {message}");
     }
     
diff --git a/docs/zh-CN/game/index.md b/docs/zh-CN/game/index.md
index 2888937..dca6922 100644
--- a/docs/zh-CN/game/index.md
+++ b/docs/zh-CN/game/index.md
@@ -452,7 +452,7 @@ public class GameDataManager
     public void SaveGame(int slotId, SaveData data)
     {
         _saveStorage.Write($"slot_{slotId}", data);
-        _saveStorage.Write($"slot_{slotId}/timestamp", DateTime.Now);
+        _saveStorage.Write($"slot_{slotId}/timestamp", DateTime.UtcNow);
         _saveStorage.Write($"slot_{slotId}/version", data.Version);
     }
     
@@ -639,13 +639,13 @@ public class CachedStorage : IStorage
         if (!_cacheTimestamps.TryGetValue(key, out var timestamp))
             return true;
             
-        return DateTime.Now - timestamp > _cacheExpiry;
+        return DateTime.UtcNow - timestamp > _cacheExpiry;
     }
     
     private void UpdateCache<T>(string key, T value)
     {
         _cache[key] = value;
-        _cacheTimestamps[key] = DateTime.Now;
+        _cacheTimestamps[key] = DateTime.UtcNow;
     }
 }
 ```
@@ -928,7 +928,7 @@ public partial class GameManager : Node, IController
         var profile = new GameProfile
         {
             PlayerName = playerName,
-            LastPlayed = DateTime.Now,
+            LastPlayed = DateTime.UtcNow,
             TotalPlayTime = 0
         };
         
@@ -1029,7 +1029,7 @@ public partial class GameManager : Node, IController
             PlayerHealth = Context.GetModel<PlayerModel>().Health.Value,
             CurrentLevel = Context.GetModel<GameModel>().CurrentLevel.Value,
             Inventory = Context.GetModel<InventoryModel>().GetData(),
-            Timestamp = DateTime.Now,
+            Timestamp = DateTime.UtcNow,
             Version = 1
         };
     }
@@ -1096,7 +1096,7 @@ public class AutoSaveSystem : AbstractSystem
             // 保存到自动存档槽
             var storage = Context.GetUtility<IStorage>();
             storage.Write("autosave", saveData);
-            storage.Write("autosave/timestamp", DateTime.Now);
+            storage.Write("autosave/timestamp", DateTime.UtcNow);
             
             Logger.Debug("Auto-save completed successfully");
         }
diff --git a/docs/zh-CN/godot/storage.md b/docs/zh-CN/godot/storage.md
index 32590c3..03b7da1 100644
--- a/docs/zh-CN/godot/storage.md
+++ b/docs/zh-CN/godot/storage.md
@@ -144,7 +144,7 @@ storage.Write("user://saves/slot_001.dat", saveData);
 
 // 存储调试信息（普通路径）
 var debugLog = new DebugLog { /* ... */ };
-storage.Write("logs/debug_" + DateTime.Now.Ticks + ".json", debugLog);
+storage.Write("logs/debug_" + DateTime.UtcNow.Ticks + ".json", debugLog);
 ```
 
 ### 存在性检查
diff --git a/docs/zh-CN/tutorials/advanced-patterns.md b/docs/zh-CN/tutorials/advanced-patterns.md
index 50386f6..f2d0a20 100644
--- a/docs/zh-CN/tutorials/advanced-patterns.md
+++ b/docs/zh-CN/tutorials/advanced-patterns.md
@@ -51,7 +51,7 @@ public class CreatePlayerCommand : AbstractCommand
             MaxHealth = 100,
             Mana = 50,
             MaxMana = 50,
-            CreatedAt = DateTime.Now
+            CreatedAt = DateTime.UtcNow
         };
         
         // 保存玩家数据
@@ -440,13 +440,13 @@ public interface IDomainEvent
 public record PlayerCreatedDomainEvent(PlayerId PlayerId, PlayerName PlayerName, PlayerClass Class) 
     : IDomainEvent
 {
-    public DateTime OccurredAt { get; } = DateTime.Now;
+    public DateTime OccurredAt { get; } = DateTime.UtcNow;
 }
 
 public record PlayerLevelUpDomainEvent(PlayerId PlayerId, PlayerName PlayerName, int NewLevel, int OldLevel) 
     : IDomainEvent
 {
-    public DateTime OccurredAt { get; } = DateTime.Now;
+    public DateTime OccurredAt { get; } = DateTime.UtcNow;
 }
 
 // 领域服务
@@ -620,7 +620,7 @@ public interface IEventStore
 
 public record AggregateSnapshot(string StreamId, int Version) : IDomainEvent
 {
-    public DateTime OccurredAt { get; } = DateTime.Now;
+    public DateTime OccurredAt { get; } = DateTime.UtcNow;
 }
 
 public class ConcurrencyException : Exception
@@ -855,7 +855,7 @@ public class PlayerEventHandler : IEventHandler<PlayerLevelUpEvent>,
         if (player != null)
         {
             player.IsAlive = false;
-            player.DeathTime = DateTime.Now;
+            player.DeathTime = DateTime.UtcNow;
             _playerRepository.Update(player);
             
             // 发送通知
@@ -1160,7 +1160,7 @@ public class ChatService : IChatService
         {
             PlayerId = playerId,
             Message = FilterMessage(message),
-            Timestamp = DateTime.Now,
+            Timestamp = DateTime.UtcNow,
             Channel = channel
         };
         
@@ -1176,7 +1176,7 @@ public class ChatService : IChatService
         {
             PlayerId = "system",
             Message = message,
-            Timestamp = DateTime.Now,
+            Timestamp = DateTime.UtcNow,
             Channel = "system"
         };
         
diff --git a/docs/zh-CN/tutorials/godot-integration.md b/docs/zh-CN/tutorials/godot-integration.md
index 1cd06f9..6c4ef3a 100644
--- a/docs/zh-CN/tutorials/godot-integration.md
+++ b/docs/zh-CN/tutorials/godot-integration.md
@@ -569,7 +569,7 @@ public partial class SmartResourceLoader : Node, IController
         {
             Path = path,
             Priority = priority,
-            RequestTime = DateTime.Now
+            RequestTime = DateTime.UtcNow
         };
         
         _loadQueue.Enqueue(request);