diff --git a/validate_yaml.py b/validate_yaml.py
index 75fb42e..c61a488 100755
--- a/validate_yaml.py
+++ b/validate_yaml.py
@@ -2,8 +2,10 @@
 """Load YAML data to ensure validity."""
 
 import os
+from datetime import date, timedelta
 
 import agenda.conference
+import agenda.data
 import agenda.travel
 import agenda.trip
 
@@ -26,3 +28,10 @@ print(len(trains), "trains")
 
 conferences = agenda.conference.get_list(os.path.join(data_dir, "conferences.yaml"))
 print(len(conferences), "conferences")
+
+today = date.today()
+last_year = today - timedelta(days=365)
+next_year = today + timedelta(days=2 * 365)
+
+events = agenda.data.read_events_yaml(data_dir, last_year, next_year)
+print(len(events), "events")