diff --git a/frontend/src/components/common/DateRangePicker.vue b/frontend/src/components/common/DateRangePicker.vue
index b116dff2e3..a2af52de9f 100644
--- a/frontend/src/components/common/DateRangePicker.vue
+++ b/frontend/src/components/common/DateRangePicker.vue
@@ -43,7 +43,7 @@
             <input
               type="date"
               v-model="localStartDate"
-              :max="localEndDate || tomorrow"
+              :max="localEndDate || tomorrow()"
               class="date-picker-input"
               @change="onDateChange"
             />
@@ -57,7 +57,7 @@
               type="date"
               v-model="localEndDate"
               :min="localStartDate"
-              :max="tomorrow"
+              :max="tomorrow()"
               class="date-picker-input"
               @change="onDateChange"
             />
@@ -108,22 +108,15 @@ const localStartDate = ref(props.startDate)
 const localEndDate = ref(props.endDate)
 const activePreset = ref<string | null>('last24Hours')
 
-const today = computed(() => {
-  // Use local timezone to avoid UTC timezone issues
-  const now = new Date()
-  const year = now.getFullYear()
-  const month = String(now.getMonth() + 1).padStart(2, '0')
-  const day = String(now.getDate()).padStart(2, '0')
-  return `${year}-${month}-${day}`
-})
+const today = () => formatDateToString(new Date())
 
 // Tomorrow's date - used for max date to handle timezone differences
 // When user is in a timezone behind the server, "today" on server might be "tomorrow" locally
-const tomorrow = computed(() => {
+const tomorrow = () => {
   const d = new Date()
   d.setDate(d.getDate() + 1)
   return formatDateToString(d)
-})
+}
 
 // Helper function to format date to YYYY-MM-DD using local timezone
 const formatDateToString = (date: Date): string => {
@@ -138,7 +131,7 @@ const presets: DatePreset[] = [
     labelKey: 'dates.today',
     value: 'today',
     getRange: () => {
-      const t = today.value
+      const t = today()
       return { start: t, end: t }
     }
   },
@@ -168,7 +161,7 @@ const presets: DatePreset[] = [
     labelKey: 'dates.last7Days',
     value: '7days',
     getRange: () => {
-      const end = today.value
+      const end = today()
       const d = new Date()
       d.setDate(d.getDate() - 6)
       const start = formatDateToString(d)
@@ -179,7 +172,7 @@ const presets: DatePreset[] = [
     labelKey: 'dates.last14Days',
     value: '14days',
     getRange: () => {
-      const end = today.value
+      const end = today()
       const d = new Date()
       d.setDate(d.getDate() - 13)
       const start = formatDateToString(d)
@@ -190,7 +183,7 @@ const presets: DatePreset[] = [
     labelKey: 'dates.last30Days',
     value: '30days',
     getRange: () => {
-      const end = today.value
+      const end = today()
       const d = new Date()
       d.setDate(d.getDate() - 29)
       const start = formatDateToString(d)
@@ -203,7 +196,7 @@ const presets: DatePreset[] = [
     getRange: () => {
       const now = new Date()
       const start = formatDateToString(new Date(now.getFullYear(), now.getMonth(), 1))
-      return { start, end: today.value }
+      return { start, end: today() }
     }
   },
   {
diff --git a/frontend/src/components/common/__tests__/DateRangePicker.midnight.spec.ts b/frontend/src/components/common/__tests__/DateRangePicker.midnight.spec.ts
new file mode 100644
index 0000000000..79e2404564
--- /dev/null
+++ b/frontend/src/components/common/__tests__/DateRangePicker.midnight.spec.ts
@@ -0,0 +1,33 @@
+import { enableAutoUnmount, mount } from '@vue/test-utils'
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
+import { ref } from 'vue'
+import DateRangePicker from '../DateRangePicker.vue'
+vi.mock('vue-i18n', () => ({ useI18n: () => ({ t: (key: string) => key, locale: ref('en') }) }))
+enableAutoUnmount(afterEach)
+beforeEach(() => { vi.useFakeTimers(); vi.setSystemTime(new Date(2026, 8, 30, 23, 59)) })
+afterEach(() => vi.useRealTimers())
+async function reopenNextDay() {
+  const w = mount(DateRangePicker, { props: { startDate: '2026-09-30', endDate: '2026-09-30' }, global: { stubs: { Icon: true } } })
+  await w.get('.date-picker-trigger').trigger('click')
+  expect(w.findAll('input[type="date"]')[1].attributes('max')).toBe('2026-10-01')
+  await w.get('.date-picker-trigger').trigger('click')
+  vi.setSystemTime(new Date(2026, 9, 1, 0, 1))
+  await w.get('.date-picker-trigger').trigger('click')
+  return w
+}
+describe('date presets after midnight', () => {
+  it.each([
+    ['dates.today', '2026-10-01'],
+    ['dates.last7Days', '2026-09-25'],
+    ['dates.thisMonth', '2026-10-01'],
+  ])('refreshes %s when the page stays mounted overnight', async (label, startDate) => {
+    const w = await reopenNextDay()
+    await w.findAll('.date-picker-preset').find(b => b.text() === label)!.trigger('click')
+    await w.get('.date-picker-apply').trigger('click')
+    expect(w.emitted('change')?.[0]?.[0]).toMatchObject({ startDate, endDate: '2026-10-01' })
+  })
+  it('updates the maximum selectable date when reopened', async () => {
+    const w = await reopenNextDay()
+    expect(w.findAll('input[type="date"]')[1].attributes('max')).toBe('2026-10-02')
+  })
+})