diff --git a/common/app/conf/switches/ABTestSwitches.scala b/common/app/conf/switches/ABTestSwitches.scala
index d2fe010ab0b2..cd94cd7d9b34 100644
--- a/common/app/conf/switches/ABTestSwitches.scala
+++ b/common/app/conf/switches/ABTestSwitches.scala
@@ -25,6 +25,16 @@ trait ABTestSwitches {
     exposeClientSide = true,
   )
 
+  Switch(
+    ABTests,
+    "ab-sign-in-gate-times-of-day",
+    "Show sign in gate a different frequency depending on the time of day",
+    owners = Seq(Owner.withGithub("personalisation")),
+    safeState = Off,
+    sellByDate = Some(LocalDate.of(2023, 11, 23)),
+    exposeClientSide = true,
+  )
+
   Switch(
     ABTests,
     "ab-deeply-read-article-footer",
diff --git a/static/src/javascripts/projects/common/modules/experiments/ab-tests.ts b/static/src/javascripts/projects/common/modules/experiments/ab-tests.ts
index 683be8168e81..21cf7875c0cd 100644
--- a/static/src/javascripts/projects/common/modules/experiments/ab-tests.ts
+++ b/static/src/javascripts/projects/common/modules/experiments/ab-tests.ts
@@ -9,12 +9,14 @@ import { prebidKargo } from './tests/prebid-kargo';
 import { remoteRRHeaderLinksTest } from './tests/remote-header-test';
 import { signInGateMainControl } from './tests/sign-in-gate-main-control';
 import { signInGateMainVariant } from './tests/sign-in-gate-main-variant';
+import { signInGateTimesOfDay } from './tests/sign-in-gate-times-of-day';
 
 // keep in sync with ab-tests in dotcom-rendering
 // https://github.com/guardian/dotcom-rendering/blob/main/dotcom-rendering/src/web/experiments/ab-tests.ts
 export const concurrentTests: readonly ABTest[] = [
 	signInGateMainVariant,
 	signInGateMainControl,
+	signInGateTimesOfDay,
 	remoteRRHeaderLinksTest,
 	deeplyReadArticleFooterTest,
 	consentlessAds,
diff --git a/static/src/javascripts/projects/common/modules/experiments/tests/sign-in-gate-times-of-day.js b/static/src/javascripts/projects/common/modules/experiments/tests/sign-in-gate-times-of-day.js
new file mode 100644
index 000000000000..6c26bb343bfe
--- /dev/null
+++ b/static/src/javascripts/projects/common/modules/experiments/tests/sign-in-gate-times-of-day.js
@@ -0,0 +1,27 @@
+
+
+export const signInGateTimesOfDay = {
+    id: 'SignInGateTimesOfDay',
+    start: '2023-10-23',
+    expiry: '2023-11-23',
+    author: 'Lindsey Dew',
+    description:
+        'Show sign in gate more frequently to users in the morning',
+    audience: 0.5,
+    audienceOffset: 0.4,
+    successMeasure: 'Increase registration and sign ins by 5%',
+    audienceCriteria:
+        '1st article of the day, max 5 articles, lower priority than consent banner, simple articles (not gallery, live etc.), not signed in, not shown after dismiss, not on help, info sections etc. Exclude iOS 9 and guardian-live-australia. Suppresses other banners, and appears over epics',
+    ophanComponentId: 'morning',
+    dataLinkNames: 'SignInGateTimesOfDay',
+    idealOutcome:
+        'TODO',
+    showForSensitive: false,
+    canRun: () => true,
+    variants: [
+        {
+            id: 'morning',
+            test: () => {},
+        },
+    ],
+};