diff --git a/openeo_processes_dask/process_implementations/cubes/_filter.py b/openeo_processes_dask/process_implementations/cubes/_filter.py
index 60939cb3..6fa1f566 100644
--- a/openeo_processes_dask/process_implementations/cubes/_filter.py
+++ b/openeo_processes_dask/process_implementations/cubes/_filter.py
@@ -21,6 +21,7 @@
     BandFilterParameterMissing,
     DimensionMissing,
     DimensionNotAvailable,
+    TemporalExtentEmpty,
     TooManyDimensions,
 )
 
@@ -69,15 +70,33 @@ def filter_temporal(
     # https://github.com/numpy/numpy/issues/23904
     with warnings.catch_warnings():
         warnings.filterwarnings("ignore", category=DeprecationWarning)
-        start_time = extent[0]
-        if start_time is not None:
+        if isinstance(extent, TemporalInterval):
+            start_time = extent.start
+            end_time = extent.end
+        else:
+            start_time = extent[0]
+            end_time = extent[1]
+
+        if isinstance(start_time, str):
+            start_time = np.datetime64(start_time)
+        elif start_time is not None:
             start_time = start_time.to_numpy()
-        end_time = extent[1]
-        if end_time is not None:
-            end_time = extent[1].to_numpy() - np.timedelta64(1, "ms")
+
+        if isinstance(end_time, str):
+            end_time = np.datetime64(end_time)
+        elif end_time is not None:
+            end_time = end_time.to_numpy()
+
         # The second element is the end of the temporal interval.
         # The specified instance in time is excluded from the interval.
         # See https://processes.openeo.org/#filter_temporal
+        if end_time is not None:
+            end_time -= np.timedelta64(1, "ms")
+
+        if start_time is not None and end_time is not None and end_time < start_time:
+            raise TemporalExtentEmpty(
+                "The temporal extent is empty. The second instant in time must always be greater/later than the first instant in time."
+            )
 
         data = data.where(~np.isnat(data[applicable_temporal_dimension]), drop=True)
         filtered = data.loc[
diff --git a/openeo_processes_dask/specs/openeo-processes b/openeo_processes_dask/specs/openeo-processes
index 66cfff4a..afa9c6b0 160000
--- a/openeo_processes_dask/specs/openeo-processes
+++ b/openeo_processes_dask/specs/openeo-processes
@@ -1 +1 @@
-Subproject commit 66cfff4a7c5111fda75afd7acad557bfae7bb38a
+Subproject commit afa9c6b00e57481383c35c81a9d59e42344c3624
diff --git a/tests/test_filter.py b/tests/test_filter.py
index 2b4c2f67..9b29906d 100644
--- a/tests/test_filter.py
+++ b/tests/test_filter.py
@@ -12,6 +12,7 @@
 from openeo_processes_dask.process_implementations.cubes.reduce import reduce_dimension
 from openeo_processes_dask.process_implementations.exceptions import (
     DimensionNotAvailable,
+    TemporalExtentEmpty,
 )
 from tests.general_checks import general_output_checks
 from tests.mockdata import create_fake_rastercube
@@ -50,6 +51,12 @@ def test_filter_temporal(temporal_interval, bounding_box, random_raster_data):
             data=input_cube, extent=temporal_interval_part, dimension="immissing"
         )
 
+    with pytest.raises(TemporalExtentEmpty):
+        filter_temporal(
+            data=input_cube,
+            extent=["2018-05-31T23:59:59", "2018-05-15T00:00:00"],
+        )
+
     temporal_interval_open = TemporalInterval.parse_obj([None, "2018-05-03T00:00:00"])
     output_cube = filter_temporal(data=input_cube, extent=temporal_interval_open)