diff --git a/apps/st/src/pages/statistics/ui/panels/schedule-calendar-panel.tsx b/apps/st/src/pages/statistics/ui/panels/schedule-calendar-panel.tsx
index 8f85b1351..bfc1abc97 100644
--- a/apps/st/src/pages/statistics/ui/panels/schedule-calendar-panel.tsx
+++ b/apps/st/src/pages/statistics/ui/panels/schedule-calendar-panel.tsx
@@ -1,7 +1,9 @@
 "use client";
 
+import { useState } from "react";
 import dynamic from "next/dynamic";
 
+import type { DatesSetArg } from "@fullcalendar/core";
 import dayGridPlugin from "@fullcalendar/daygrid";
 import timeGridPlugin from "@fullcalendar/timegrid";
 import dayjs from "dayjs";
@@ -12,25 +14,48 @@ import { LoadingWithAnimation } from "@common/components";
 
 import { useDragHandle } from "../sortable-panel";
 
-// FullCalendar는 클라이언트 전용이므로 dynamic import
 const FullCalendar = dynamic(() => import("@fullcalendar/react"), {
     ssr: false,
 });
 
+function getMonthRange(date = dayjs()) {
+    return {
+        schdlBgngYmd: date.startOf("month").format("YYYY-MM-DD"),
+        schdlEndYmd: date.endOf("month").format("YYYY-MM-DD"),
+    };
+}
+
 export function ScheduleCalendarPanel() {
     const { dragHandleProps, isDragging } = useDragHandle();
+    const [dateRange, setDateRange] = useState(getMonthRange);
 
-    // TBD: 초기 날짜 범위 설정 로직
-    const today = dayjs();
-    const startOfMonth = today.startOf("month").format("YYYY-MM-DD");
-    const endOfMonth = today.endOf("month").format("YYYY-MM-DD");
-
-    const { data, isLoading } = useSchedules({
+    const { data, isLoading, isFetching } = useSchedules({
         siteId: SITE_ID,
-        schdlBgngYmd: startOfMonth,
-        schdlEndYmd: endOfMonth,
+        schdlBgngYmd: dateRange.schdlBgngYmd,
+        schdlEndYmd: dateRange.schdlEndYmd,
     });
 
+    function handleDatesSet(dateInfo: DatesSetArg) {
+        const nextRange = {
+            schdlBgngYmd: dayjs(dateInfo.view.currentStart).format(
+                "YYYY-MM-DD",
+            ),
+            schdlEndYmd: dayjs(dateInfo.view.currentEnd)
+                .subtract(1, "day")
+                .format("YYYY-MM-DD"),
+        };
+
+        setDateRange((prev) => {
+            if (
+                prev.schdlBgngYmd === nextRange.schdlBgngYmd &&
+                prev.schdlEndYmd === nextRange.schdlEndYmd
+            ) {
+                return prev;
+            }
+            return nextRange;
+        });
+    }
+
     return (
         <div className="card card-border !m-0 h-full border-border bg-background text-foreground">
             <div
@@ -40,41 +65,39 @@ export function ScheduleCalendarPanel() {
             >
                 <h3 className="text-2xl font-semibold">일정관리</h3>
             </div>
-            <div className="card-body max-h-[calc(100%-3.25rem)] py-2.5">
-                {isLoading && (
-                    <div className="flex h-full items-center justify-center">
+            <div className="card-body relative max-h-[calc(100%-3.25rem)] py-2.5">
+                <div className="h-[48rem]">
+                    <FullCalendar
+                        plugins={[dayGridPlugin, timeGridPlugin]}
+                        initialView="dayGridMonth"
+                        locale="ko"
+                        headerToolbar={{
+                            left: "prev,next",
+                            center: "title",
+                            right: "dayGridMonth,timeGridWeek",
+                        }}
+                        buttonText={{
+                            month: "월",
+                            week: "주",
+                        }}
+                        datesSet={handleDatesSet}
+                        events={(data ?? []).map((schedule) => ({
+                            id: schedule.schdlSn.toString(),
+                            title: schedule.schdlTtl,
+                            start: schedule.schdlBgngDt,
+                            end: schedule.schdlEndDt,
+                            allDay: true,
+                        }))}
+                        height="100%"
+                    />
+                </div>
+                {(isLoading || isFetching) && (
+                    <div className="bg-background/50 absolute inset-0 flex items-center justify-center">
                         <div className="relative size-[5rem]">
                             <LoadingWithAnimation color="primary" />
                         </div>
                     </div>
                 )}
-                {data && (
-                    <div className="h-[48rem]">
-                        <FullCalendar
-                            plugins={[dayGridPlugin, timeGridPlugin]}
-                            initialView="dayGridMonth"
-                            locale="ko"
-                            headerToolbar={{
-                                left: "prev,next",
-                                center: "title",
-                                right: "dayGridMonth,timeGridWeek",
-                            }}
-                            buttonText={{
-                                month: "월",
-                                week: "주",
-                            }}
-                            events={data.map((schedule) => ({
-                                id: schedule.schdlSn.toString(),
-                                title: schedule.schdlTtl,
-                                start: schedule.schdlBgngDt,
-                                end: schedule.schdlEndDt,
-                                // TBD: allDay 판단 기준 (1439분 이상?)
-                                allDay: true,
-                            }))}
-                            height="100%"
-                        />
-                    </div>
-                )}
             </div>
         </div>
     );
diff --git a/apps/st/src/pages/statistics/ui/panels/schedule-info-panel.tsx b/apps/st/src/pages/statistics/ui/panels/schedule-info-panel.tsx
index 6a5e3602d..05a0fe3ff 100644
--- a/apps/st/src/pages/statistics/ui/panels/schedule-info-panel.tsx
+++ b/apps/st/src/pages/statistics/ui/panels/schedule-info-panel.tsx
@@ -83,36 +83,59 @@ export function ScheduleInfoPanel({ params }: ScheduleInfoPanelProps) {
                             </div>
                             <div className="space-y-2">
                                 <div className="flex items-center justify-between rounded-sm border border-border p-3">
-                                    <Badge size="lg" className="font-semibold">
-                                        {data.inptSeCd}차 입력기간
-                                    </Badge>
-                                    <p className="text-2xl">
-                                        {dayjs(data.inptBgngYmd).format(
-                                            "YYYY.MM.DD",
-                                        )}{" "}
-                                        ~{" "}
-                                        {dayjs(data.inptEndYmd).format(
-                                            "YYYY.MM.DD",
-                                        )}
-                                    </p>
+                                    {data.inptSeCd &&
+                                    data.inptBgngYmd &&
+                                    data.inptEndYmd ? (
+                                        <>
+                                            <Badge
+                                                size="lg"
+                                                className="font-semibold"
+                                            >
+                                                {data.inptSeCd}차 입력기간
+                                            </Badge>
+                                            <p className="text-2xl">
+                                                {dayjs(data.inptBgngYmd).format(
+                                                    "YYYY.MM.DD",
+                                                )}{" "}
+                                                ~{" "}
+                                                {dayjs(data.inptEndYmd).format(
+                                                    "YYYY.MM.DD",
+                                                )}
+                                            </p>
+                                        </>
+                                    ) : (
+                                        <p className="w-full text-center text-lg text-label">
+                                            등록된 입력 일정이 없습니다.
+                                        </p>
+                                    )}
                                 </div>
                                 <div className="flex items-center justify-between rounded-sm border border-border p-3">
-                                    <Badge
-                                        size="lg"
-                                        color="gray"
-                                        className="font-semibold"
-                                    >
-                                        {data.vrfcSeCd}차 검증기간
-                                    </Badge>
-                                    <p className="text-2xl">
-                                        {dayjs(data.vrfcBgngYmd).format(
-                                            "YYYY.MM.DD",
-                                        )}{" "}
-                                        ~{" "}
-                                        {dayjs(data.vrfcEndYmd).format(
-                                            "YYYY.MM.DD",
-                                        )}
-                                    </p>
+                                    {data.vrfcSeCd &&
+                                    data.vrfcBgngYmd &&
+                                    data.vrfcEndYmd ? (
+                                        <>
+                                            <Badge
+                                                size="lg"
+                                                color="gray"
+                                                className="font-semibold"
+                                            >
+                                                {data.vrfcSeCd}차 검증기간
+                                            </Badge>
+                                            <p className="text-2xl">
+                                                {dayjs(data.vrfcBgngYmd).format(
+                                                    "YYYY.MM.DD",
+                                                )}{" "}
+                                                ~{" "}
+                                                {dayjs(data.vrfcEndYmd).format(
+                                                    "YYYY.MM.DD",
+                                                )}
+                                            </p>
+                                        </>
+                                    ) : (
+                                        <p className="w-full text-center text-lg text-label">
+                                            등록된 검증 일정이 없습니다.
+                                        </p>
+                                    )}
                                 </div>
                             </div>
                             <div className="flex items-center justify-center gap-4 py-4 tracking-tight">