diff --git a/rainforest/qpe/qpe.py b/rainforest/qpe/qpe.py
index dba2609..f4026b2 100644
--- a/rainforest/qpe/qpe.py
+++ b/rainforest/qpe/qpe.py
@@ -203,11 +203,11 @@ def _qpe_to_chgrid(qpe, time, missing_files, precision=2):
                                             1000 * np.max(Y_QPE_CENTERS)]])
 
 
-    time_start = time - datetime.timedelta(seconds = 5 * 60 + 1)
+    time_start = time - datetime.timedelta(seconds = 5 * 60)
     grid.time['units'] = 'seconds since {:s}'.format(
                     datetime.datetime.strftime(time_start,
                                                '%Y-%m-%dT%H:%M:%SZ'))
-    grid.time['data'] = np.arange(0, 5 *60)
+    grid.time['data'] = np.arange(0, 5 *60 + 1)
     grid.origin_latitude['data'] = 46.9524
     grid.origin_longitude['data'] = 7.43958333
     grid.projection = proj4_to_dict("+proj=somerc +lat_0=46.95240555555556 "+\