diff --git a/src/ifcopenshell-python/ifcopenshell/util/date.py b/src/ifcopenshell-python/ifcopenshell/util/date.py
index 1da652f74e..d1b0ad5d7e 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/date.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/date.py
@@ -45,3 +45,8 @@ def datetime2ifc(dt, ifc_type):
         return dt.date().isoformat()
     elif ifc_type == "IfcTime":
         return dt.time().isoformat()
+    elif ifc_type == "IfcCalendarDate":
+        return {"DayComponent": dt.day, "MonthComponent": dt.month, "YearComponent": dt.year}
+    elif ifc_type == "IfcLocalTime":
+        # TODO implement timezones
+        return {"HourComponent": dt.hour, "MinuteComponent": dt.minute, "SecondComponent": dt.second}