diff --git a/apps/api/tests/broker/reminderScheduler.test.ts b/apps/api/tests/broker/reminderScheduler.test.ts
index 3ca3c57..be04096 100644
--- a/apps/api/tests/broker/reminderScheduler.test.ts
+++ b/apps/api/tests/broker/reminderScheduler.test.ts
@@ -567,6 +567,91 @@ describe('reminderScheduler — CR-01: sentReminders Map pruning', () => {
   });
 });
 
+// ── D-09: humanizeLeadMinutes body formatter ─────────────────────────────────
+
+describe('humanizeLeadMinutes — D-09 humanized push body formatter', () => {
+  it('maps 30 min → "Starts in 30 min"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(30)).toBe('Starts in 30 min');
+  });
+
+  it('maps 59 min → "Starts in 59 min" (< 60 bucket)', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(59)).toBe('Starts in 59 min');
+  });
+
+  it('maps 60 min → "Starts in 1 hour"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(60)).toBe('Starts in 1 hour');
+  });
+
+  it('maps 90 min → "Starts in 1 hour" (60–119 bucket, not 2 hours)', async () => {
+    // Math.round(90/60)=2 would give "2 hours" — branch ordering must prevent this
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(90)).toBe('Starts in 1 hour');
+  });
+
+  it('maps 120 min → "Starts in 2 hours"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(120)).toBe('Starts in 2 hours');
+  });
+
+  it('maps 1440 min → "Starts in 1 day"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(1440)).toBe('Starts in 1 day');
+  });
+
+  it('maps 2880 min → "Starts in 2 days"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(2880)).toBe('Starts in 2 days');
+  });
+
+  it('maps 10080 min → "Starts in 7 days"', async () => {
+    const { humanizeLeadMinutes } = await import('../../src/broker/reminderScheduler.js');
+    expect(humanizeLeadMinutes(10080)).toBe('Starts in 7 days');
+  });
+});
+
+describe('reminderScheduler — D-09: humanized push body in dispatch', () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+    vi.resetModules();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    vi.clearAllMocks();
+  });
+
+  it('dispatched notification body is humanized from configured lead (not live minutes-to-start)', async () => {
+    // D-09: body driven by event.reminderLeadMinutes (DB ground truth), not by (dtstart - now)
+    // A 1440-min (1 day) lead event should produce "Starts in 1 day", not "Starts in 30 min"
+    const now = new Date('2026-06-15T10:00:00Z');
+    vi.setSystemTime(now);
+
+    const { db } = await import('../../src/db/client.js');
+    const { dispatchPush } = await import('../../src/lib/pushDispatcher.js');
+    const { runReminderCheck } = await import('../../src/broker/reminderScheduler.js');
+
+    // Event exactly 1440 min (1 day) from now → fire time = dtstartUtc - 1440min = now
+    const dtstartUtc = new Date('2026-06-16T10:00:00Z'); // tomorrow 10:00Z
+    const row = makeEventRow({
+      uid: 'humanize-body-uid',
+      title: 'Meeting Tomorrow',
+      dtstartUtc,
+      reminderLeadMinutes: 1440,
+    });
+
+    mockTwoQueries(vi.mocked(db), [row]);
+    await runReminderCheck(now);
+
+    expect(vi.mocked(dispatchPush)).toHaveBeenCalledOnce();
+    const [, payload] = vi.mocked(dispatchPush).mock.calls[0]!;
+    // Body must be "Starts in 1 day" (configured lead), not "Starts in 1470 min" (live delta)
+    expect((payload as { body: string }).body).toBe('Starts in 1 day');
+  });
+});
+
 // ── T-05-19: per-subscription error isolation ────────────────────────────────
 
 describe('reminderScheduler — T-05-19: per-subscription error isolation', () => {