diff --git a/ChangeLog b/ChangeLog
index fbfa7f1..fbe2b4a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,8 +1,10 @@
-2019-05-29
+2019-07-01
 
         * Version 1.7.0 released
         ========================
 
+        Add GTime.datetime() method and add optional precision to GTime.utc() (#2909)
+
 
 2019-06-05
 
diff --git a/NEWS b/NEWS
index 9b9e99b..38142d4 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,6 @@
 New Features and Important Changes in GammaLib 1.7.0
 
-5 June 2019
+1 July 2019
 
 
 1. Introduction
@@ -21,7 +21,7 @@ The following classes have been renamed:
 - none
 
 The following methods have been added:
-- none
+- GTime.datetime() - Datetime conversion in Python interface
 
 The following methods have been removed:
 - none
@@ -30,7 +30,7 @@ The following methods have been renamed:
 - none
 
 The arguments for the following methods have been changed:
-- none
+- GTime::utc(const int& precision=0) - Add optional precision value
 
 The return value of the following methods has been changed:
 - none
@@ -73,7 +73,9 @@ None
 
 10. Observation module
 ----------------------
-None
+Add GTime.datetime() method to the Python interface to convert times from and
+to datetime.datetime objects. Add an optional precision argument to the GTime.utc()
+to set the number of digits after the comma for the seconds (#2909).
 
 
 11. Optimization module
diff --git a/doc/source/admin/release_history/1.7.rst b/doc/source/admin/release_history/1.7.rst
index 0bf523c..5b441f1 100644
--- a/doc/source/admin/release_history/1.7.rst
+++ b/doc/source/admin/release_history/1.7.rst
@@ -22,6 +22,8 @@ Bug fixes
 Improvements
 ------------
 
+* [`2909 <https://cta-redmine.irap.omp.eu/issues/2909>`_] -
+  Add GTime.datetime() method and add optional precision to GTime.utc() method.
 
 
 New features
diff --git a/test/test_GObservation.cpp b/test/test_GObservation.cpp
index d7ed92c..45219ea 100644
--- a/test/test_GObservation.cpp
+++ b/test/test_GObservation.cpp
@@ -1,7 +1,7 @@
 /***************************************************************************
  *              test_GObservation.cpp - Test observation module            *
  * ----------------------------------------------------------------------- *
- *  copyright (C) 2012-2017 by Jean-Baptiste Cayrou                        *
+ *  copyright (C) 2012-2019 by Jean-Baptiste Cayrou                        *
  * ----------------------------------------------------------------------- *
  *                                                                         *
  *  This program is free software: you can redistribute it and/or modify   *
@@ -827,9 +827,8 @@ void TestGObservation::test_time(void)
     test_value(time.days("TT"), 1.4288979);
     test_value(time.days("TAI"), 1.4285254);        // TAI=TT-0.0003725
     test_value(time.days("UTC"), 1.42813188);       // UTC=TT-0.00076602
-    test_assert(time.utc() == "2010-01-02T10:17:37",
-                "GTime::utc(): 2010-01-02T10:17:37 expected, "+
-                time.utc()+" found.");
+    test_value(time.utc(), "2010-01-02T10:17:37");
+    test_value(time.utc(2), "2010-01-02T10:17:36.79");
 
     // Test set method. The UTC conversion to MJD (TT) was done using xTime.
     // Note that xTime missed a second for the "2006-01-01T00:00:00"
diff --git a/test/test_GObservation.py b/test/test_GObservation.py
index eeb20ae..cba03c9 100755
--- a/test/test_GObservation.py
+++ b/test/test_GObservation.py
@@ -1,7 +1,7 @@
 # ==========================================================================
 # This module performs unit tests for the GammaLib observation module.
 #
-# Copyright (C) 2012-2018 Juergen Knoedlseder
+# Copyright (C) 2012-2019 Juergen Knoedlseder
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -474,6 +474,16 @@ class Test(gammalib.GPythonTestSuite):
         self.test_assert(time_a >= time_b,
              'Check larger or equal than operator')
 
+        # Get datetime
+        self.test_value(str(time_a.datetime()), '2010-01-01 00:00:09.000001',
+                        'Check datetime getter method')
+
+        # Set datetime
+        time_dt = gammalib.GTime()
+        time_dt.datetime(time_a.datetime())
+        self.test_value(time_dt.secs(), 9.0, 1.0e-6,
+                        'Check datetime setter method')
+
         # Return
         return