diff --git a/src/energenie/OpenThings.py b/src/energenie/OpenThings.py
index 7dc3862..a8516f6 100644
--- a/src/energenie/OpenThings.py
+++ b/src/energenie/OpenThings.py
@@ -3,6 +3,7 @@
 # Implement OpenThings message encoding and decoding
 
 import crypto
+import time
 
 class OpenThingsException(Exception):
 	def __init__(self, value):
@@ -570,7 +571,7 @@
 	return rem
 
 
-def showMessage(msg):
+def showMessage(msg, timestamp=None):
 	"""Show the message in a friendly format"""
 
 	# HEADER
@@ -578,6 +579,8 @@
 	mfrid     = header["mfrid"]
 	productid = header["productid"]
 	sensorid  = header["sensorid"]
+        if timestamp != None:
+            print("receive-time:%s" % time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(timestamp)))
 	print("mfrid:%s prodid:%s sensorid:%s" % (hex(mfrid), hex(productid), hex(sensorid)))
 
 	# RECORDS
diff --git a/src/monitor.py b/src/monitor.py
index 9dbf3ce..dcaff84 100644
--- a/src/monitor.py
+++ b/src/monitor.py
@@ -10,7 +10,7 @@
 # to a CSV log file, so could be the basis for a non-controlling energy logging app.
 
 from energenie import Registry, Devices, Messages, OpenThings, radio
-
+import time
 import Logger
 
 def warning(msg):
@@ -35,11 +35,12 @@
             payload = radio.receive()
             try:
                 decoded = OpenThings.decode(payload)
+                now = time.time()
             except OpenThings.OpenThingsException as e:
                 warning("Can't decode payload:" + str(e))
                 continue
                       
-            OpenThings.showMessage(decoded)
+            OpenThings.showMessage(decoded, timestamp=now)
             # Any device that reports will be added to the non-persistent directory
             Registry.update(decoded)
             ##trace(decoded)
diff --git a/src/switch.py b/src/switch.py
index 2c6c2ef..2fece13 100644
--- a/src/switch.py
+++ b/src/switch.py
@@ -10,6 +10,7 @@
 # Don't expect this to be a good starting point for an application.
 # Consider waiting for me to finish developing the device object interface first.
 
+import time
 from energenie import Devices, Messages, Registry, OpenThings, radio
 from Timer import Timer
 
@@ -39,11 +40,12 @@
         payload = radio.receive()
         try:
             decoded = OpenThings.decode(payload)
+            now = time.time()
         except OpenThings.OpenThingsException as e:
             warning("Can't decode payload:" + str(e))
             return
 
-        OpenThings.showMessage(decoded)
+        OpenThings.showMessage(decoded, timestamp=now)
         # Any device that reports will be added to the non-persistent directory
         Registry.update(decoded)
         ##trace(decoded)