diff --git a/tests/e2e/invoicing-period.smoke.spec.js b/tests/e2e/invoicing-period.smoke.spec.js
index eacc3760..09b07ac5 100644
--- a/tests/e2e/invoicing-period.smoke.spec.js
+++ b/tests/e2e/invoicing-period.smoke.spec.js
@@ -16,6 +16,11 @@ function matchesApiPath(urlString, expectedPath) {
   return url.pathname === expectedPath || url.pathname === `/api${expectedPath}`;
 }
 
+function periodFixtureDate(dateFrom, fallback = "2026-07-14") {
+  const value = String(dateFrom || fallback).slice(0, 10);
+  return /^\d{4}-\d{2}-\d{2}$/.test(value) ? value : fallback;
+}
+
 async function suppressVueDevtoolsOverlay(page) {
   await page.addInitScript(() => {
     const STYLE_ID = "__e2e-hide-vue-devtools";
@@ -153,8 +158,9 @@ function createPeriodPayload() {
   };
 }
 
-function createObjectTreePeriodPayload() {
+function createObjectTreePeriodPayload({ dateFrom = "2026-07-14" } = {}) {
   const payload = createPeriodPayload();
+  const fixtureDate = periodFixtureDate(dateFrom);
   const order = {
     id: 9001,
     customer_id: 4101,
@@ -172,8 +178,8 @@ function createObjectTreePeriodPayload() {
       external_id: "",
       closed_at: "",
     },
-    date: "2026-07-14T10:00:00.000Z",
-    created_at: "2026-07-14 10:00:00",
+    date: `${fixtureDate}T10:00:00.000Z`,
+    created_at: `${fixtureDate} 10:00:00`,
     amount: 360,
     total_net_amount: 360,
     reference: "FORVOGN-REF-9001",
@@ -215,8 +221,10 @@ function createFlaggedPeriodPayload({
   flaggedCustomerRequiresAction = true,
   includeHiddenFilteredFlag = false,
   invoiceCollectionId = null,
+  dateFrom = "2026-07-14",
 } = {}) {
   const payload = createPeriodPayload();
+  const fixtureDate = periodFixtureDate(dateFrom);
   payload.types.all[0].requires_action = flaggedCustomerRequiresAction;
   payload.types.all[0].transactions = payload.types.all[0].transactions.map((transaction) => ({
     ...transaction,
@@ -237,7 +245,7 @@ function createFlaggedPeriodPayload({
     invoice_collection: invoiceCollectionId
       ? {
           id: invoiceCollectionId,
-          closed_at: "2026-07-14 10:30:00",
+          closed_at: `${fixtureDate} 10:30:00`,
           booked_invoice_id: 28368,
         }
       : null,
@@ -248,8 +256,8 @@ function createFlaggedPeriodPayload({
     pending_handheld: false,
     user_id: 11,
     booked: flaggedTransactionBooked,
-    date: "2026-07-14T10:00:00.000Z",
-    created_at: "2026-07-14 10:00:00",
+    date: `${fixtureDate}T10:00:00.000Z`,
+    created_at: `${fixtureDate} 10:00:00`,
   }));
   const flags = [
     {
@@ -539,7 +547,8 @@ function createQueuedPeriodPayload() {
   };
 }
 
-function createDraftBlockedPeriodPayload() {
+function createDraftBlockedPeriodPayload({ dateFrom = "2026-07-14" } = {}) {
+  const fixtureDate = periodFixtureDate(dateFrom);
   return {
     types: {
       all: [
@@ -551,7 +560,7 @@ function createDraftBlockedPeriodPayload() {
           transactions: [
             {
               id: 9301,
-              date: "2026-07-14T10:00:00.000Z",
+              date: `${fixtureDate}T10:00:00.000Z`,
               amount: 210,
               booked: false,
               excluded: false,
@@ -584,7 +593,8 @@ function createDraftBlockedPeriodPayload() {
   };
 }
 
-function createStaleDraftPeriodPayload() {
+function createStaleDraftPeriodPayload({ dateFrom = "2026-04-14" } = {}) {
+  const fixtureDate = periodFixtureDate(dateFrom, "2026-04-14");
   return {
     types: {
       all: [
@@ -596,7 +606,7 @@ function createStaleDraftPeriodPayload() {
           transactions: [
             {
               id: 9302,
-              date: "2026-04-14T10:00:00.000Z",
+              date: `${fixtureDate}T10:00:00.000Z`,
               amount: 210,
               booked: false,
               excluded: false,
@@ -1458,8 +1468,9 @@ test.describe("Invoicing period tab", () => {
     const resolvedAutomaticFingerprints = new Set();
 
     await openPeriodView(page, {
-      payloadFactory: () =>
+      payloadFactory: ({ dateFrom }) =>
         createFlaggedPeriodPayload({
+          dateFrom,
           resolvedManualFlagIds: Array.from(resolvedManualFlagIds),
           resolvedAutomaticFingerprints: Array.from(resolvedAutomaticFingerprints),
           flaggedTransactionBooked: true,
@@ -1604,8 +1615,9 @@ test.describe("Invoicing period tab", () => {
 
   test("@smoke period expanded booked collection shows hidden flag reasons", async ({ page }) => {
     await openPeriodView(page, {
-      payloadFactory: () =>
+      payloadFactory: ({ dateFrom }) =>
         createFlaggedPeriodPayload({
+          dateFrom,
           resolvedManualFlagIds: [501],
           resolvedAutomaticFingerprints: ["order-reference-fingerprint-1", "price-fingerprint-1"],
           flaggedTransactionBooked: true,