Fixed #17742 -- Handled aware datetimes in DateField

Converted aware datetimes to the default time zone before using them
in the context of a DateField.

1 files changed, 5 insertions, 0 deletions

diff --git a/django/db/models/fields/__init__.py b/django/db/models/fields/__init__.py
index 3e97f6cb01..79fb373ce1 100644
--- a/django/db/models/fields/__init__.py
+++ b/django/db/models/fields/__init__.py
@@ -667,6 +667,11 @@ class DateField(Field):
         if value is None:
             return value
         if isinstance(value, datetime.datetime):
+            if settings.USE_TZ and timezone.is_aware(value):
+                # Convert aware datetimes to the current time zone
+                # before casting them to dates (#17742).
+                default_timezone = timezone.get_default_timezone()
+                value = timezone.make_naive(value, default_timezone)
             return value.date()
         if isinstance(value, datetime.date):
             return value