diff --git a/covjsonkit/decoder/TimeSeries.py b/covjsonkit/decoder/TimeSeries.py
index 9991b33..01b34e5 100644
--- a/covjsonkit/decoder/TimeSeries.py
+++ b/covjsonkit/decoder/TimeSeries.py
@@ -68,6 +68,7 @@ def to_xarray(self):
         y = coords[0]["axes"]["y"]["values"]
         z = coords[0]["axes"]["z"]["values"]
         steps = coords[0]["axes"]["t"]["values"]
+        steps = [step.replace('Z', '') for step in steps]
         steps = pd.to_datetime(steps)
         # steps = list(range(len(steps)))