diff --git a/functional_tests/features/date_and_time.feature b/functional_tests/features/date_and_time.feature
index 1a5e136e0..b35205fa6 100644
--- a/functional_tests/features/date_and_time.feature
+++ b/functional_tests/features/date_and_time.feature
@@ -15,7 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-@essential @date-and-time @system
+@essential @date-and-time @system @backups
 Feature: Date and Time
   Configure time zone and network time service.
 
@@ -35,3 +35,11 @@ Scenario: Disable network time application
 Scenario: Set timezone
   When I set the time zone to Africa/Abidjan
   Then the time zone should be Africa/Abidjan
+
+Scenario: Backup and restore datetime
+  When I set the time zone to Africa/Accra
+  And I create a backup of the datetime app data
+  And I set the time zone to Africa/Addis_Ababa
+  And I export the datetime app data backup
+  And I restore the datetime app data backup
+  Then the time zone should be Africa/Accra
diff --git a/plinth/modules/datetime/__init__.py b/plinth/modules/datetime/__init__.py
index 860ba3316..6d1157036 100644
--- a/plinth/modules/datetime/__init__.py
+++ b/plinth/modules/datetime/__init__.py
@@ -25,6 +25,8 @@ from django.utils.translation import ugettext_lazy as _
 from plinth import service as service_module
 from plinth.menu import main_menu
 
+from .manifest import backup
+
 version = 1
 
 is_essential = True
diff --git a/plinth/modules/datetime/manifest.py b/plinth/modules/datetime/manifest.py
new file mode 100644
index 000000000..ec6957d5e
--- /dev/null
+++ b/plinth/modules/datetime/manifest.py
@@ -0,0 +1,23 @@
+#
+# This file is part of FreedomBox.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+"""
+Application manifest for datetime.
+"""
+
+from plinth.modules.backups.api import validate as validate_backup
+
+backup = validate_backup({'data': {'files': ['/etc/timezone']}})