diff --git a/apps/api/src/routes/events.ts b/apps/api/src/routes/events.ts
index 6daaaef..a2ce837 100644
--- a/apps/api/src/routes/events.ts
+++ b/apps/api/src/routes/events.ts
@@ -88,10 +88,17 @@ eventsRouter.get('/', zValidator('query', eventsQuerySchema), async (c) => {
       .innerJoin(users, eq(calendars.userId, users.id))
       .where(
         or(
-          // Recurring masters: may have occurrences inside the window even if dtstartUtc is old
+          // Recurring masters: may have occurrences inside the window even if dtstartUtc is old.
+          // Two sub-cases:
+          //   (a) Timed recurring masters: dtstartUtc < windowEnd
+          //   (b) All-day recurring masters: dtstartUtc is NULL (DATE-only), use dtstartDate < end
+          // A NULL dtstartUtc causes the timed comparison to be NULL/false, so (b) carries it.
           and(
             sql`${calendarEvents.hasRrule} = 1`,
-            sql`${calendarEvents.dtstartUtc} < ${windowEndDate}`,
+            or(
+              sql`${calendarEvents.dtstartUtc} < ${windowEndDate}`,
+              sql`${calendarEvents.dtstartDate} < ${end}`,
+            ),
           ),
           // Non-recurring timed events: dtstartUtc falls in [windowStart, windowEnd)
           and(
diff --git a/apps/api/tests/routes/events.test.ts b/apps/api/tests/routes/events.test.ts
index d26dd96..3fd3bfc 100644
--- a/apps/api/tests/routes/events.test.ts
+++ b/apps/api/tests/routes/events.test.ts
@@ -1,13 +1,21 @@
 /**
- * Tests for GET /api/events — windowed endpoint (Plan 02 GREEN state).
+ * Tests for GET /api/events — windowed endpoint.
  *
  * Contracts:
  *  1. Missing/malformed start or end params → 400 (input validation guard)
  *  2. Window wider than 90 days → 400 (DoS cap)
- *  3. Valid window returns { occurrences: [] } each with color + isShared fields when DB is empty
+ *  3. Valid window returns { occurrences: [] } when DB is empty
+ *  4. Recurring timed master (dtstartUtc years before window, hasRrule=1) yields occurrences
+ *     inside the requested window via expandOccurrences.
+ *  5. Recurring all-day master (dtstartUtc NULL, dtstartDate years before window, hasRrule=1)
+ *     is NOT filtered out — its occurrence in the window is returned.
  */
 
-import { describe, it, expect, vi } from 'vitest'
+import { describe, it, expect, vi, beforeEach } from 'vitest'
+import {
+  SAMPLE_VEVENT_RECURRING_TIMED,
+  SAMPLE_VEVENT_RECURRING_ALLDAY,
+} from '../helpers/db.js'
 
 // Mock @hono/oidc-auth so tests do not need a live Authelia instance.
 // The mock makes oidcAuthMiddleware a no-op passthrough.
@@ -17,23 +25,32 @@ vi.mock('@hono/oidc-auth', () => ({
   getAuth: () => null,
 }))
 
-// Mock DB to avoid real DB connections in unit tests
+// Configurable mock for the DB — tests can set mockDbRows before calling the route.
+let mockDbRows: unknown[] = []
+const mockWhereFn = vi.fn().mockImplementation(() => Promise.resolve(mockDbRows))
+const mockInnerJoin2Fn = vi.fn().mockReturnValue({ where: mockWhereFn })
+const mockInnerJoin1Fn = vi.fn().mockReturnValue({ innerJoin: mockInnerJoin2Fn })
+const mockFromFn = vi.fn().mockReturnValue({ innerJoin: mockInnerJoin1Fn })
+const mockSelectFn = vi.fn().mockReturnValue({ from: mockFromFn })
+
 vi.mock('../../src/db/client.js', () => ({
   db: {
-    select: vi.fn().mockReturnValue({
-      from: vi.fn().mockReturnValue({
-        innerJoin: vi.fn().mockReturnValue({
-          innerJoin: vi.fn().mockReturnValue({
-            where: vi.fn().mockResolvedValue([]),
-          }),
-        }),
-        where: vi.fn().mockResolvedValue([]),
-      }),
-    }),
+    select: mockSelectFn,
   },
 }))
 
 describe('GET /api/events', () => {
+  beforeEach(() => {
+    // Reset to empty result set before each test
+    mockDbRows = []
+    vi.clearAllMocks()
+    // Restore mock implementations after clearAllMocks
+    mockWhereFn.mockImplementation(() => Promise.resolve(mockDbRows))
+    mockInnerJoin2Fn.mockReturnValue({ where: mockWhereFn })
+    mockInnerJoin1Fn.mockReturnValue({ innerJoin: mockInnerJoin2Fn })
+    mockFromFn.mockReturnValue({ innerJoin: mockInnerJoin1Fn })
+    mockSelectFn.mockReturnValue({ from: mockFromFn })
+  })
 
   it('returns 400 when start param is missing', async () => {
     const { app } = await import('../../src/index.js')
@@ -56,8 +73,6 @@ describe('GET /api/events', () => {
   it('returns occurrences with color and isShared fields for valid window', async () => {
     const { app } = await import('../../src/index.js')
     const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
-    // Route not yet evolved — currently returns raw events without windowing or color join.
-    // This test will pass once Plan 02 implements the windowed query + expansion.
     expect(res.status).toBe(200)
     const body = await res.json() as { occurrences: Array<{ color: string; isShared: boolean }> }
     expect(body).toHaveProperty('occurrences')
@@ -70,4 +85,70 @@ describe('GET /api/events', () => {
       expect(typeof occ.isShared).toBe('boolean')
     }
   })
+
+  it('returns occurrences for a timed recurring master whose dtstartUtc is years before the window', async () => {
+    // Simulates a weekly meeting created in 2024 (dtstartUtc=2024-01-01) being queried for
+    // a 2026 window. The SQL pre-filter must select it (hasRrule=1 AND dtstartUtc < windowEnd)
+    // and expandOccurrences must return the in-window occurrences.
+    // SAMPLE_VEVENT_RECURRING_TIMED has DTSTART:20240101T100000Z RRULE:FREQ=WEEKLY;BYDAY=MO.
+    // In the 2026-06-01..2026-07-01 window there are 4 Mondays.
+    mockDbRows = [
+      {
+        rawVevent: SAMPLE_VEVENT_RECURRING_TIMED,
+        calendarId: 1,
+        calendarName: 'Work',
+        isShared: false,
+        userId: 1,
+        userColor: '#4A90D9',
+      },
+    ]
+
+    const { app } = await import('../../src/index.js')
+    const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
+    expect(res.status).toBe(200)
+
+    const body = await res.json() as { occurrences: Array<{ uid: string; start: string; allDay: boolean }> }
+    expect(body.occurrences.length).toBeGreaterThan(0)
+
+    // All returned occurrences must be inside [2026-06-01, 2026-07-01)
+    for (const occ of body.occurrences) {
+      expect(occ.uid).toBe('test-recurring-timed-001@familysync')
+      expect(occ.allDay).toBe(false)
+      // start must be within the window
+      const startDate = occ.start.slice(0, 10) // 'YYYY-MM-DD'
+      expect(startDate >= '2026-06-01').toBe(true)
+      expect(startDate < '2026-07-01').toBe(true)
+    }
+  })
+
+  it('returns occurrence for an all-day recurring master whose dtstartDate is years before the window (dtstartUtc NULL)', async () => {
+    // Simulates an annual birthday created in 2024 (DTSTART;VALUE=DATE:20240615, no dtstartUtc).
+    // The SQL pre-filter MUST NOT exclude it on dtstartUtc IS NULL — the fix adds
+    //   OR dtstartDate < end
+    // so this row is selected and expandOccurrences returns the 2026-06-15 occurrence.
+    // SAMPLE_VEVENT_RECURRING_ALLDAY has DTSTART;VALUE=DATE:20240615 RRULE:FREQ=YEARLY.
+    mockDbRows = [
+      {
+        rawVevent: SAMPLE_VEVENT_RECURRING_ALLDAY,
+        calendarId: 2,
+        calendarName: 'Personal',
+        isShared: false,
+        userId: 1,
+        userColor: '#50C878',
+      },
+    ]
+
+    const { app } = await import('../../src/index.js')
+    const res = await app.request('/api/events?start=2026-06-01&end=2026-07-01')
+    expect(res.status).toBe(200)
+
+    const body = await res.json() as { occurrences: Array<{ uid: string; start: string; allDay: boolean }> }
+    // There must be exactly one annual occurrence (June 15) in the window
+    expect(body.occurrences.length).toBe(1)
+
+    const occ = body.occurrences[0]
+    expect(occ.uid).toBe('test-recurring-allday-001@familysync')
+    expect(occ.allDay).toBe(true)
+    expect(occ.start).toBe('2026-06-15')
+  })
 })