Fixed #21432 -- DateTimeQuery now copies tzinfo when cloning.

Thanks Enrique Martínez for the report and @bmispelon for the tests.

1 files changed, 5 insertions, 0 deletions

diff --git a/django/db/models/sql/subqueries.py b/django/db/models/sql/subqueries.py
index 17438bc359..79db1ad99a 100644
--- a/django/db/models/sql/subqueries.py
+++ b/django/db/models/sql/subqueries.py
@@ -260,6 +260,11 @@ class DateTimeQuery(DateQuery):
 
     compiler = 'SQLDateTimeCompiler'
 
+    def clone(self, klass=None, memo=None, **kwargs):
+        if 'tzinfo' not in kwargs and hasattr(self, 'tzinfo'):
+            kwargs['tzinfo'] = self.tzinfo
+        return super(DateTimeQuery, self).clone(klass, memo, **kwargs)
+
     def _check_field(self, field):
         assert isinstance(field, DateTimeField), \
             "%r isn't a DateTimeField." % field.name