diff --git a/modules/util/viirs_surfrad.py b/modules/util/viirs_surfrad.py
index 8f237b8c9e3938bcd2375efa5c7e26333ec75247..1f781ae4c16c7b20c18cdeffbda7f55d37eb6d54 100644
--- a/modules/util/viirs_surfrad.py
+++ b/modules/util/viirs_surfrad.py
@@ -106,7 +106,7 @@ def run_all(directory, out_directory, day_night='ANY', pattern='clavrx_*.nc', st
             if len(data_train_tiles) == 0 and len(data_valid_tiles) == 0:
                 continue
 
-            if (f_cnt % 5) == 0:
+            if (f_cnt % 20) == 0:
                 num_valid_samples = 0
                 if len(data_valid_tiles) > 0:
                     label_valid = np.stack(label_valid_tiles)