diff --git a/ecoscope/io/earthranger.py b/ecoscope/io/earthranger.py
index 90364c71..9b935e4a 100644
--- a/ecoscope/io/earthranger.py
+++ b/ecoscope/io/earthranger.py
@@ -626,8 +626,8 @@ def get_events(
         )
         gdf = gpd.GeoDataFrame(df)
 
-        if not df.empty:
-            df = clean_time_cols(df)
+        if not gdf.empty:
+            gdf = clean_time_cols(gdf)
             if gdf.loc[0, "location"] is not None:
                 gdf.loc[~gdf["geojson"].isna(), "geometry"] = gpd.GeoDataFrame.from_features(
                     gdf.loc[~gdf["geojson"].isna(), "geojson"]
diff --git a/ecoscope/io/earthranger_utils.py b/ecoscope/io/earthranger_utils.py
index 0d5c6924..f622a316 100644
--- a/ecoscope/io/earthranger_utils.py
+++ b/ecoscope/io/earthranger_utils.py
@@ -3,6 +3,8 @@
 import pandas as pd
 from dateutil import parser
 
+TIME_COLS = ["time", "created_at", "updated_at", "end_time", "last_position_date", "recorded_at", "fixtime"]
+
 
 def clean_kwargs(addl_kwargs={}, **kwargs):
     for k in addl_kwargs.keys():
@@ -38,8 +40,7 @@ def to_gdf(df):
 
 
 def clean_time_cols(df):
-    time_cols = ["time", "created_at", "updated_at", "end_time", "last_position_date", "recorded_at", "fixtime"]
-    for col in time_cols:
+    for col in TIME_COLS:
         if col in df.columns and not pd.api.types.is_datetime64_ns_dtype(df[col]):
             # convert x is not None to pd.isna(x) is False
             df[col] = df[col].apply(lambda x: pd.to_datetime(parser.parse(x), utc=True) if not pd.isna(x) else None)
diff --git a/tests/test_earthranger_io.py b/tests/test_earthranger_io.py
index f45c62de..6f6d7dfc 100644
--- a/tests/test_earthranger_io.py
+++ b/tests/test_earthranger_io.py
@@ -11,9 +11,17 @@
 import ecoscope
 from erclient import ERClientException
 
+from ecoscope.io.earthranger_utils import TIME_COLS
+
 pytestmark = pytest.mark.io
 
 
+def check_time_is_parsed(df):
+    for col in TIME_COLS:
+        if col in df.columns:
+            assert pd.api.types.is_datetime64_ns_dtype(df[col]) or df[col].isna().all()
+
+
 def test_get_subject_observations(er_io):
     relocations = er_io.get_subject_observations(
         subject_ids=er_io.SUBJECT_IDS,
@@ -26,6 +34,7 @@ def test_get_subject_observations(er_io):
     assert "groupby_col" in relocations
     assert "fixtime" in relocations
     assert "extra__source" in relocations
+    check_time_is_parsed(relocations)
 
 
 def test_get_source_observations(er_io):
@@ -36,6 +45,7 @@ def test_get_source_observations(er_io):
     assert isinstance(relocations, ecoscope.base.Relocations)
     assert "fixtime" in relocations
     assert "groupby_col" in relocations
+    check_time_is_parsed(relocations)
 
 
 def test_get_source_no_observations(er_io):
@@ -54,6 +64,7 @@ def test_get_subjectsource_observations(er_io):
     assert isinstance(relocations, ecoscope.base.Relocations)
     assert "fixtime" in relocations
     assert "groupby_col" in relocations
+    check_time_is_parsed(relocations)  # TODO Check this
 
 
 def test_get_subjectsource_no_observations(er_io):
@@ -73,6 +84,7 @@ def test_get_subjectgroup_observations(er_io):
 def test_get_events(er_events_io):
     events = er_events_io.get_events(event_type=["e00ce1f6-f9f1-48af-93c9-fb89ec493b8a"])
     assert not events.empty
+    check_time_is_parsed(events)
 
 
 def test_das_client_method(er_io):
@@ -88,6 +100,7 @@ def test_get_patrols_datestr(er_io):
     patrols = er_io.get_patrols(since=since_str, until=until_str)
 
     assert len(patrols) > 0
+    check_time_is_parsed(patrols)
 
     time_ranges = [
         segment["time_range"]
@@ -118,6 +131,7 @@ def test_get_patrols_with_type_value(er_io):
         if "patrol_type" in segment
     ]
     assert all(value == "ecoscope_patrol" for value in patrol_types)
+    check_time_is_parsed(patrols)
 
 
 def test_get_patrols_with_type_value_list(er_io):
@@ -131,6 +145,7 @@ def test_get_patrols_with_type_value_list(er_io):
         if "patrol_type" in segment
     ]
     assert all(value in patrol_type_value_list for value in patrol_types)
+    check_time_is_parsed(patrols)
 
 
 def test_get_patrols_with_invalid_type_value(er_io):
@@ -150,6 +165,7 @@ def test_get_patrol_events(er_io):
     assert "patrol_segment_id" in events
     assert "patrol_start_time" in events
     assert "time" in events
+    check_time_is_parsed(events)
 
 
 @patch("ecoscope.io.EarthRangerIO.get_patrols")
@@ -276,6 +292,7 @@ def test_get_patrol_observations(er_io):
         include_subjectsource_details=False,
     )
     assert not observations.empty
+    check_time_is_parsed(observations)
 
 
 def test_get_patrol_observations_with_patrol_details(er_io):
@@ -295,6 +312,7 @@ def test_get_patrol_observations_with_patrol_details(er_io):
     assert "patrol_id" in observations.columns
     assert "patrol_title" in observations.columns
     pd.testing.assert_series_equal(observations["patrol_id"], observations["groupby_col"], check_names=False)
+    check_time_is_parsed(observations)
 
 
 def test_users(er_io):