diff --git a/air-quality-ui/system_tests/pages/banner.ts b/air-quality-ui/system_tests/pages/banner.ts
index c4cceb43..1dccd198 100644
--- a/air-quality-ui/system_tests/pages/banner.ts
+++ b/air-quality-ui/system_tests/pages/banner.ts
@@ -6,6 +6,7 @@ export class Banner extends BasePage {
   readonly page: Page
 
   readonly calendarIcon: Locator
+  readonly dateOkButton: Locator
   readonly datePicker: Locator
   readonly datePickerNextMonthButton: Locator
   readonly datePickerTimeOptions: Locator
@@ -22,6 +23,7 @@ export class Banner extends BasePage {
     this.page = page
 
     this.calendarIcon = page.getByTestId('CalendarIcon')
+    this.dateOkButton = page.getByRole('button', { name: 'Ok' })
     this.datePicker = page.getByRole('textbox', { name: 'Forecast Base Date' })
     this.datePickerNextMonthButton = page.getByLabel('Next month')
     this.datePickerTimeOptions = page.locator('ul > [role="option"]')
@@ -71,6 +73,10 @@ export class Banner extends BasePage {
     }
   }
 
+  async confirmDate() {
+    await this.dateOkButton.click()
+  }
+
   async setBaseTime(baseTime: string): Promise<void> {
     await this.datePicker.fill(baseTime)
   }
diff --git a/air-quality-ui/system_tests/ui/city_page/city_page.spec.ts b/air-quality-ui/system_tests/ui/city_page/city_page.spec.ts
index caa51893..3c4f1f06 100644
--- a/air-quality-ui/system_tests/ui/city_page/city_page.spec.ts
+++ b/air-quality-ui/system_tests/ui/city_page/city_page.spec.ts
@@ -104,7 +104,7 @@ test.use({
   viewport: { width: 1920, height: 1080 },
 })
 test.describe('City graph snapshots', () => {
-  test.beforeEach(async ({ cityPage, page }) => {
+  test.beforeEach(async ({ cityPage, page, banner }) => {
     const mockedForecastResponse = [
       createForecastAPIResponseData({
         base_time: '2024-07-01T00:00:00Z',
@@ -321,6 +321,7 @@ test.describe('City graph snapshots', () => {
     await gotoPage(page, '/city/Rio%20de%20Janeiro')
     await cityPage.waitForAllGraphsToBeVisible()
     await cityPage.setBaseTime('01/07/2024 00:00')
+    await banner.confirmDate()
   })
 
   test('AQI snapshot', async ({ cityPage }) => {
@@ -400,7 +401,7 @@ test.use({
   viewport: { width: 1920, height: 1080 },
 })
 test.describe('Charts are fully visible in 1920x1080 viewport', () => {
-  test.beforeEach(async ({ page, cityPage }) => {
+  test.beforeEach(async ({ page, cityPage, banner }) => {
     const mockedForecastResponse = [
       createForecastAPIResponseData({
         base_time: '2024-07-01T00:00:00Z',
@@ -431,6 +432,7 @@ test.describe('Charts are fully visible in 1920x1080 viewport', () => {
 
     await cityPage.waitForAllGraphsToBeVisible()
     await cityPage.setBaseTime('01/07/2024 00:00')
+    await banner.confirmDate()
   })
 
   test('AQI chart element is visible in fullscreen view', async ({
diff --git a/air-quality-ui/system_tests/ui/city_page/city_page_api_calls.spec.ts b/air-quality-ui/system_tests/ui/city_page/city_page_api_calls.spec.ts
index 9d400295..59e7526b 100644
--- a/air-quality-ui/system_tests/ui/city_page/city_page_api_calls.spec.ts
+++ b/air-quality-ui/system_tests/ui/city_page/city_page_api_calls.spec.ts
@@ -95,6 +95,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
       banner,
     }) => {
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       expect(requestArray.length).toEqual(1)
     })
 
@@ -106,6 +107,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
       )
 
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       expect(requestArray[0]).toContain(`base_time=${expectedForecastBaseTime}`)
     })
   })
diff --git a/air-quality-ui/system_tests/ui/summary_page/summary_page_api_calls.spec.ts b/air-quality-ui/system_tests/ui/summary_page/summary_page_api_calls.spec.ts
index 51027712..b6ba7a36 100644
--- a/air-quality-ui/system_tests/ui/summary_page/summary_page_api_calls.spec.ts
+++ b/air-quality-ui/system_tests/ui/summary_page/summary_page_api_calls.spec.ts
@@ -137,6 +137,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
       banner,
     }) => {
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       expect(requestArray.length).toEqual(1)
     })
 
@@ -151,6 +152,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
         await encodeDateToURIComponent(systemDate)
 
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       expect(requestArray[0]).toContain(
         `location_type=city&valid_time_from=${expectedValidTimeFrom}&valid_time_to=${systemDateUriEncoded}&base_time=${expectedForecastBaseTime}`,
       )
@@ -179,6 +181,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
       banner,
     }) => {
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       expect(requestArray.length).toEqual(41)
     })
 
@@ -229,6 +232,7 @@ test.describe('API calls on changing forecast base time in UI', () => {
         '2024-07-08T12%3A00%3A00.000Z',
       ]
       await banner.clickOnDay(3)
+      await banner.confirmDate()
       for (const request in requestArray) {
         expect(requestArray[request]).toContain(
           `measurement_base_time=${expectedMeasurementBaseTimeArray[request]}&measurement_time_range=90&location_type=city`,