diff --git a/user_manual/pim/calendar.rst b/user_manual/pim/calendar.rst
index 6b20b6a4a..3a7ecd1ce 100644
--- a/user_manual/pim/calendar.rst
+++ b/user_manual/pim/calendar.rst
@@ -290,6 +290,19 @@ calendar event:
 
    The Calendar app deletes the event.
 
+Special CalDAV URLs
+-------------------
+
+Additionally the calendar app is providing two URLs for special functions:
+
+**Export calendar as an .ics file**
+
+  https://ADDRESS/remote.php/caldav/calendars/USERNAME/CALENDARNAME?export
+
+**Your contact's birthdays**
+
+  https://ADDRESS/remote.php/caldav/calendars/USERNAME/contact_birthdays
+
 Calendar App FAQ
 ----------------