diff --git a/0001-Change-default-clock-format-back-to-24h-for-non-US-l.patch b/0001-Change-default-clock-format-back-to-24h-for-non-US-l.patch
new file mode 100644
index 0000000..9f0cfe0
--- /dev/null
+++ b/0001-Change-default-clock-format-back-to-24h-for-non-US-l.patch
@@ -0,0 +1,79 @@
+From aa2d88f00ca8827a690aab55ec765f9142a34c1d Mon Sep 17 00:00:00 2001
+From: Simon McVittie <smcv@collabora.com>
+Date: Fri, 16 Feb 2024 13:24:05 +0000
+Subject: [PATCH] Change default clock format back to 24h for non-US locales
+
+Instead of changing the default for all known and unknown locales
+until their translations are updated, set the default format to 24h,
+and generate an en_US locale that overrides it to 12h to accommodate
+American time display expectations.
+
+Resolves: https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/issues/55
+Signed-off-by: Simon McVittie <smcv@collabora.com>
+---
+ po/LINGUAS                                    |  1 +
+ po/en_US.po                                   | 26 +++++++++++++++++++
+ ...org.gnome.desktop.interface.gschema.xml.in |  2 +-
+ 3 files changed, 28 insertions(+), 1 deletion(-)
+ create mode 100644 po/en_US.po
+
+diff --git a/po/LINGUAS b/po/LINGUAS
+index 4ba222e..8231f3c 100644
+--- a/po/LINGUAS
++++ b/po/LINGUAS
+@@ -12,6 +12,7 @@ da
+ de
+ el
+ en_GB
++en_US
+ eo
+ es
+ eu
+diff --git a/po/en_US.po b/po/en_US.po
+new file mode 100644
+index 0000000..fbd4781
+--- /dev/null
++++ b/po/en_US.po
+@@ -0,0 +1,26 @@
++# American English translation for gsettings-desktop-schemas.
++# This is almost the same as LC_MESSAGES=C, but with a 12h clock.
++# Copyright (C) 2024 gsettings-desktop-schemas's COPYRIGHT HOLDER
++# This file is distributed under the same license as the gsettings-desktop-schemas package.
++# Simon McVittie <smcv@collabora.com>, 2024
++#
++msgid ""
++msgstr ""
++"Project-Id-Version: gsettings-desktop-schemas main\n"
++"Report-Msgid-Bugs-To: https://gitlab.gnome.org/GNOME/gsettings-desktop-"
++"schemas/issues\n"
++"POT-Creation-Date: 2024-02-16 13:00+0000\n"
++"PO-Revision-Date: 2024-02-16 13:00+0000\n"
++"Last-Translator: Simon McVittie <smcv@collabora.com>\n"
++"Language-Team: https://gitlab.gnome.org/Teams/Translation/Coordination\n"
++"Language: en_US\n"
++"MIME-Version: 1.0\n"
++"Content-Type: text/plain; charset=UTF-8\n"
++"Content-Transfer-Encoding: 8bit\n"
++"Plural-Forms: nplurals=2; plural=(n != 1);\n"
++"X-Project-Style: gnome\n"
++
++#. TRANSLATORS: select your locale's default clock format, this should be '12h' or '24h' (with the quotes!)
++#: schemas/org.gnome.desktop.interface.gschema.xml.in:212
++msgid "'24h'"
++msgstr "'12h'"
+diff --git a/schemas/org.gnome.desktop.interface.gschema.xml.in b/schemas/org.gnome.desktop.interface.gschema.xml.in
+index 7782323..10fca74 100644
+--- a/schemas/org.gnome.desktop.interface.gschema.xml.in
++++ b/schemas/org.gnome.desktop.interface.gschema.xml.in
+@@ -209,7 +209,7 @@
+     </key>
+     <key name="clock-format" enum="org.gnome.desktop.GDesktopClockFormat">
+       <!-- TRANSLATORS: select your locale's default clock format, this should be '12h' or '24h' (with the quotes!) -->
+-      <default l10n="time">'12h'</default>
++      <default l10n="time">'24h'</default>
+       <summary>Whether the clock displays in 24h or 12h format</summary>
+       <description>
+         Whether the clock displays in 24h or 12h format
+-- 
+2.43.2
+
diff --git a/gsettings-desktop-schemas.spec b/gsettings-desktop-schemas.spec
index 32a814e..cba5dd3 100644
--- a/gsettings-desktop-schemas.spec
+++ b/gsettings-desktop-schemas.spec
@@ -12,6 +12,12 @@ License:        LGPL-2.1-or-later
 URL:            https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas
 Source0:        https://download.gnome.org/sources/%{name}/46/%{name}-%{tarball_version}.tar.xz
 
+# https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/merge_requests/75
+# https://gitlab.gnome.org/GNOME/gsettings-desktop-schemas/-/issues/55
+# https://bugzilla.redhat.com/show_bug.cgi?id=2265628
+# set default clock format back to 24hr for non-US locales
+Patch:          0001-Change-default-clock-format-back-to-24h-for-non-US-l.patch
+
 BuildRequires:  gettext
 BuildRequires:  glib2-devel >= 2.31.0
 BuildRequires:  gobject-introspection-devel