diff --git a/add_talk_dates.py b/add_talk_dates.py
new file mode 100755
index 0000000..3fcc776
--- /dev/null
+++ b/add_talk_dates.py
@@ -0,0 +1,73 @@
+#!/usr/bin/python3
+
+import datetime
+import os
+
+import lxml.etree
+
+from confarchive import database, model
+
+DB_URL = "postgresql:///confarchive"
+schedules_loc = "schedules"
+
+database.init_db(DB_URL)
+
+Element = lxml.etree._Element
+
+
+def read_field(root: Element, field: str) -> str | None:
+    """Get conference field."""
+    value = root.findtext(".//" + field)
+    if value is None:
+        return None
+    assert isinstance(value, str)
+    return value
+
+
+def process_schedule(filename: str, short_name: str) -> None:
+    """Load conference schedule."""
+    start = open(filename).read(15)
+    if start == "BEGIN:VCALENDAR" or start.startswith("{"):
+        return None
+
+    conf = model.Conference.query.filter_by(short_name=short_name).one_or_none()
+
+    if not conf:
+        return
+
+    print((conf.short_name, conf.title))
+
+    root = lxml.etree.parse(filename).getroot()
+    for day in root.findall(".//day"):
+        day_index_str = day.get("index")
+        # assert day_index_str is not None
+        # day_index = int(day_index_str)
+        print("day", day_index_str)
+        for event_element in day.findall(".//event"):
+            title = read_field(event_element, "title")
+            start = read_field(event_element, "start")
+            if len(start) == 4:
+                start = "0" + start
+
+            d = day.get("date")
+            assert d and start
+
+            dt = datetime.datetime.fromisoformat(d + " " + start)
+
+            q = model.Event.query.filter_by(title=title, conference=conf)
+            if q.count() != 1:
+                continue
+
+            event = q.one()
+            event.event_date = dt
+            event.abstract = read_field(event_element, "abstract")
+
+            print(start, title)
+
+
+for f in os.scandir(schedules_loc):
+    if f.is_dir():
+        continue
+    print(f.name)
+    process_schedule(f.path, f.name)
+    # database.session.commit()