diff --git a/agent/src/com/cloud/agent/resource/computing/LibvirtComputingResource.java b/agent/src/com/cloud/agent/resource/computing/LibvirtComputingResource.java
index 0eb779c62bb..28f27d276db 100755
--- a/agent/src/com/cloud/agent/resource/computing/LibvirtComputingResource.java
+++ b/agent/src/com/cloud/agent/resource/computing/LibvirtComputingResource.java
@@ -59,10 +59,7 @@ import org.libvirt.DomainInterfaceStats;
 import org.libvirt.DomainSnapshot;
 import org.libvirt.LibvirtException;
 import org.libvirt.NodeInfo;
-import org.libvirt.StoragePool;
-import org.libvirt.StoragePoolInfo;
-import org.libvirt.StorageVol;
-import org.libvirt.StorageVolInfo;
+
 
 import com.cloud.agent.api.Answer;
 import com.cloud.agent.api.AttachIsoCommand;
@@ -155,7 +152,6 @@ import com.cloud.agent.api.to.StorageFilerTO;
 import com.cloud.agent.api.to.VirtualMachineTO;
 import com.cloud.agent.api.to.VolumeTO;
 import com.cloud.agent.resource.computing.KVMHABase.NfsStoragePool;
-import com.cloud.agent.resource.computing.LibvirtStorageVolumeDef.volFormat;
 import com.cloud.agent.resource.computing.LibvirtVMDef.ConsoleDef;
 import com.cloud.agent.resource.computing.LibvirtVMDef.DevicesDef;
 import com.cloud.agent.resource.computing.LibvirtVMDef.DiskDef;
@@ -168,12 +164,12 @@ import com.cloud.agent.resource.computing.LibvirtVMDef.InterfaceDef;
 import com.cloud.agent.resource.computing.LibvirtVMDef.InterfaceDef.hostNicType;
 import com.cloud.agent.resource.computing.LibvirtVMDef.SerialDef;
 import com.cloud.agent.resource.computing.LibvirtVMDef.TermPolicy;
+import com.cloud.agent.resource.computing.LibvirtVMDef.ClockDef;
 import com.cloud.agent.resource.virtualnetwork.VirtualRoutingResource;
 import com.cloud.agent.storage.KVMPhysicalDisk;
 import com.cloud.agent.storage.KVMPhysicalDisk.PhysicalDiskFormat;
 import com.cloud.agent.storage.KVMStoragePool;
 import com.cloud.agent.storage.KVMStoragePoolManager;
-import com.cloud.agent.storage.LibvirtStorageAdaptor;
 import com.cloud.dc.Vlan;
 import com.cloud.exception.InternalErrorException;
 import com.cloud.host.Host.Type;
@@ -207,7 +203,7 @@ import com.cloud.vm.DiskProfile;
 import com.cloud.vm.VirtualMachine;
 import com.cloud.vm.VirtualMachine.State;
 import com.cloud.vm.VirtualMachineName;
-import com.xensource.xenapi.Connection;
+
 
 
 /**
@@ -2272,6 +2268,14 @@ public class LibvirtComputingResource extends ServerResourceBase implements Serv
 		term.setPowerOffPolicy("destroy");
 		term.setRebootPolicy("restart");
 		vm.addComp(term);
+		
+		ClockDef clock = new ClockDef();
+		if (vmTO.getOs().startsWith("Windows")) {
+			clock.setClockOffset(ClockDef.ClockOffset.LOCALTIME);
+			clock.setTimer("rtc", "catchup", null);
+		}
+		
+		vm.addComp(clock);
 
 		DevicesDef devices = new DevicesDef();
 		devices.setEmulatorPath(_hypervisorPath);
diff --git a/agent/src/com/cloud/agent/resource/computing/LibvirtVMDef.java b/agent/src/com/cloud/agent/resource/computing/LibvirtVMDef.java
index 89473a22b0c..b1b41f618b3 100644
--- a/agent/src/com/cloud/agent/resource/computing/LibvirtVMDef.java
+++ b/agent/src/com/cloud/agent/resource/computing/LibvirtVMDef.java
@@ -183,6 +183,72 @@ public class LibvirtVMDef {
 		}
 	}
 	
+	public static class ClockDef {
+		public enum ClockOffset {
+			UTC("utc"),
+			LOCALTIME("localtime"),
+			TIMEZONE("timezone"),
+			VARIABLE("variable");
+			
+			private String _offset;
+			private ClockOffset(String offset) {
+				_offset = offset;
+			}
+			@Override
+			public String toString() {
+				return _offset;
+			}
+		}
+		private ClockOffset _offset;
+		private String _timerName;
+		private String _tickPolicy;
+		private String _track;
+		
+		public ClockDef() {
+			_offset = ClockOffset.UTC;
+		}
+		
+		public void setClockOffset(ClockOffset offset) {
+			_offset = offset;
+		}
+		
+		public void setTimer(String timerName, String tickPolicy, String track) {
+			_timerName = timerName;
+			_tickPolicy = tickPolicy;
+			_track = track;
+		}
+		
+		@Override
+		public String toString() {
+			StringBuilder clockBuilder = new StringBuilder();
+			clockBuilder.append("<clock offset='");
+			clockBuilder.append(_offset.toString());
+			clockBuilder.append("'>\n");
+			if (_timerName != null) {
+				clockBuilder.append("<timer name='");
+				clockBuilder.append(_timerName);
+				clockBuilder.append("' ");
+				
+				if (_tickPolicy != null) {
+					clockBuilder.append("tickpolicy='");
+					clockBuilder.append(_tickPolicy);
+					clockBuilder.append("' ");
+				}
+				
+				if (_track != null) {
+					clockBuilder.append("track='");
+					clockBuilder.append(_track);
+					clockBuilder.append("' ");
+				}
+				
+				clockBuilder.append(">\n");
+				clockBuilder.append("</timer>\n");
+			}
+			clockBuilder.append("</clock>\n");
+			return clockBuilder.toString();
+		}
+	}
+	
 	public static class DevicesDef {
 		private String _emulator;
 		private final Map<String, List<?>> devices = new HashMap<String, List<?>>();