diff --git a/tests/calc/test_thermo.py b/tests/calc/test_thermo.py
index 4cc55ec6d7d..3393623675f 100644
--- a/tests/calc/test_thermo.py
+++ b/tests/calc/test_thermo.py
@@ -2145,9 +2145,9 @@ def index_xarray_data():
 
 @pytest.fixture()
 def index_xarray_data_expanded():
-    """Create data for testing that index calculations work with xarray data.
+    """Create expanded data for testing that index calculations work with xarray data.
 
-    Expanded for Galvez Davison Index calculation, which requires 950hPa pressure
+    Specifically for Galvez Davison Index calculation, which requires 950hPa pressure
     """
     pressure = xr.DataArray(
         [950., 850., 700., 500.], dims=('isobaric',), attrs={'units': 'hPa'}
@@ -2184,7 +2184,7 @@ def index_xarray_data_expanded():
 
     return xr.Dataset({'temperature': temp, 'profile': profile, 'dewpoint': dewp,
                        'wind_direction': dirw, 'wind_speed': speed},
-                      coords={'isobaric': pressure, 'time': ['2020-01-01T00:00Z']})
+                      coords={'isobaric': pressure, 'time': ['2023-01-01T00:00Z']})
 
 
 def test_lifted_index():