diff --git a/modules/aeolus/datasource.py b/modules/aeolus/datasource.py
index 7b2a987e381d6935ef05de66a55fa77b807804bf..1b0761297fec2c1901e27dd726bbfad77f865949 100644
--- a/modules/aeolus/datasource.py
+++ b/modules/aeolus/datasource.py
@@ -102,6 +102,8 @@ class Files:
         self.ftimes = self.ftimes[sidxs, :]
         self.flist = self.flist[sidxs]
 
+        self._current_index = 0
+
     def get_datetime(self, pathname):
         pass
 
@@ -131,6 +133,17 @@ class Files:
     def get_parameters(self):
         pass
 
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self._current_index < len(self.flist):
+            self._current_index += 1
+            return self.flist[self._current_index]
+        else:
+            self._current_index = 0
+            raise StopIteration
+
 
 class GOESL1B(Files):
     def __init__(self, files_path, band='14', pattern='OR_ABI-L1b-RadC-M*C14'+'*.nc'):