diff --git a/frontend/app/admin/availability/page.tsx b/frontend/app/admin/availability/page.tsx
index 998b0a6..1fe46ce 100644
--- a/frontend/app/admin/availability/page.tsx
+++ b/frontend/app/admin/availability/page.tsx
@@ -8,26 +8,14 @@ import { Header } from "../../components/Header";
 import { useRequireAuth } from "../../hooks/useRequireAuth";
 import { components } from "../../generated/api";
 import constants from "../../../../shared/constants.json";
-import { formatDate, formatDisplayDate } from "../../utils/date";
+import { formatDate, formatDisplayDate, getDateRange } from "../../utils/date";
 
-const { slotDurationMinutes, maxAdvanceDays } = constants.booking;
+const { slotDurationMinutes, maxAdvanceDays, minAdvanceDays } = constants.booking;
 
 type AvailabilityDay = components["schemas"]["AvailabilityDay"];
 type AvailabilityResponse = components["schemas"]["AvailabilityResponse"];
 type TimeSlot = components["schemas"]["TimeSlot"];
 
-// Helper to get next N days starting from tomorrow
-function getDateRange(): Date[] {
-  const dates: Date[] = [];
-  const today = new Date();
-  for (let i = 1; i <= maxAdvanceDays; i++) {
-    const d = new Date(today);
-    d.setDate(today.getDate() + i);
-    dates.push(d);
-  }
-  return dates;
-}
-
 // Generate time options for dropdowns (15-min intervals)
 // Moved outside component since slotDurationMinutes is a constant
 function generateTimeOptions(slotDurationMinutes: number): string[] {
@@ -64,10 +52,10 @@ export default function AdminAvailabilityPage() {
   const [copyTargets, setCopyTargets] = useState<Set<string>>(new Set());
   const [isCopying, setIsCopying] = useState(false);
 
-  const dates = getDateRange();
+  const dates = getDateRange(minAdvanceDays, maxAdvanceDays);
 
   const fetchAvailability = useCallback(async () => {
-    const dateRange = getDateRange();
+    const dateRange = getDateRange(minAdvanceDays, maxAdvanceDays);
     if (!dateRange.length) return;
     
     try {
diff --git a/frontend/app/booking/page.tsx b/frontend/app/booking/page.tsx
index a387dce..4bfc129 100644
--- a/frontend/app/booking/page.tsx
+++ b/frontend/app/booking/page.tsx
@@ -8,7 +8,7 @@ import { Header } from "../components/Header";
 import { useRequireAuth } from "../hooks/useRequireAuth";
 import { components } from "../generated/api";
 import constants from "../../../shared/constants.json";
-import { formatDate, formatTime } from "../utils/date";
+import { formatDate, formatTime, getDateRange } from "../utils/date";
 
 const { slotDurationMinutes, maxAdvanceDays, minAdvanceDays, noteMaxLength } = constants.booking;
 
@@ -16,18 +16,6 @@ type BookableSlot = components["schemas"]["BookableSlot"];
 type AvailableSlotsResponse = components["schemas"]["AvailableSlotsResponse"];
 type AppointmentResponse = components["schemas"]["AppointmentResponse"];
 
-// Get date range for booking (tomorrow to +30 days)
-function getBookableDates(): Date[] {
-  const dates: Date[] = [];
-  const today = new Date();
-  for (let i = minAdvanceDays; i <= maxAdvanceDays; i++) {
-    const d = new Date(today);
-    d.setDate(today.getDate() + i);
-    dates.push(d);
-  }
-  return dates;
-}
-
 const styles: Record<string, React.CSSProperties> = {
   main: {
     minHeight: "100vh",
@@ -244,7 +232,7 @@ export default function BookingPage() {
   const [error, setError] = useState<string | null>(null);
   const [successMessage, setSuccessMessage] = useState<string | null>(null);
 
-  const dates = getBookableDates();
+  const dates = getDateRange(minAdvanceDays, maxAdvanceDays);
 
   const fetchSlots = useCallback(async (date: Date) => {
     setIsLoadingSlots(true);
diff --git a/frontend/app/utils/date.ts b/frontend/app/utils/date.ts
index 729475c..e314893 100644
--- a/frontend/app/utils/date.ts
+++ b/frontend/app/utils/date.ts
@@ -46,3 +46,18 @@ export function formatDisplayDate(d: Date): string {
   return d.toLocaleDateString("en-US", { weekday: "short", month: "short", day: "numeric" });
 }
 
+/**
+ * Get date range for booking/availability (from minAdvanceDays to maxAdvanceDays).
+ * Returns an array of Date objects starting from minAdvanceDays days from today.
+ */
+export function getDateRange(minAdvanceDays: number, maxAdvanceDays: number): Date[] {
+  const dates: Date[] = [];
+  const today = new Date();
+  for (let i = minAdvanceDays; i <= maxAdvanceDays; i++) {
+    const d = new Date(today);
+    d.setDate(today.getDate() + i);
+    dates.push(d);
+  }
+  return dates;
+}
+