diff --git a/Framework/PythonInterface/plugins/algorithms/WorkflowAlgorithms/SaveVulcanGSS.py b/Framework/PythonInterface/plugins/algorithms/WorkflowAlgorithms/SaveVulcanGSS.py
index acf57dd74f68526b928042874e39a6da3c25b0d1..cdf13d6bccecbbd9384f4770f1be2c7788f259aa 100644
--- a/Framework/PythonInterface/plugins/algorithms/WorkflowAlgorithms/SaveVulcanGSS.py
+++ b/Framework/PythonInterface/plugins/algorithms/WorkflowAlgorithms/SaveVulcanGSS.py
@@ -371,7 +371,7 @@ class SaveVulcanGSS(PythonAlgorithm):
 
             # property run_start and duration exist
             utctime = numpy.datetime64(run.getProperty('run_start').value)
-            time0 = numpy.datetime64("1990-01-01T0:0:0")
+            time0 = numpy.datetime64("1990-01-01T00:00:00")
             total_nanosecond_start = int((utctime - time0) / numpy.timedelta64(1, 'ns'))
             total_nanosecond_stop = total_nanosecond_start + int(duration*1.0E9)