1 files changed, 26 insertions, 19 deletions
diff --git a/lib/bidding/detail/service.ts b/lib/bidding/detail/service.ts
index 99591e3b..eec3f253 100644
--- a/lib/bidding/detail/service.ts
+++ b/lib/bidding/detail/service.ts
@@ -854,15 +854,14 @@ export async function registerBidding(biddingId: number, userId: string) {
     await db.transaction(async (tx) => {
       debugLog('registerBidding: Transaction started')
       
-      // 0. 입찰서 제출기간 계산 (오프셋 기반)
+      // 0. 입찰서 제출기간 계산 (입력값 절대 기준)
       const { submissionStartOffset, submissionDurationDays, submissionStartDate, submissionEndDate } = bidding
       
       let calculatedStartDate = bidding.submissionStartDate
       let calculatedEndDate = bidding.submissionEndDate
 
-      // 오프셋 값이 있으면 날짜 계산
       if (submissionStartOffset !== null && submissionDurationDays !== null) {
-        // 시간 추출 (기본값: 시작 09:00, 마감 18:00)
+        // DB에 저장된 시간을 숫자 그대로 가져옴 (예: 10:00 저장 → 10 반환)
         const startTime = submissionStartDate 
           ? { hours: submissionStartDate.getUTCHours(), minutes: submissionStartDate.getUTCMinutes() }
           : { hours: 9, minutes: 0 }
@@ -870,22 +869,30 @@ export async function registerBidding(biddingId: number, userId: string) {
           ? { hours: submissionEndDate.getUTCHours(), minutes: submissionEndDate.getUTCMinutes() }
           : { hours: 18, minutes: 0 }
 
-        // baseDate = 현재일 날짜만 (00:00:00)
-        const baseDate = new Date()
-        baseDate.setHours(0, 0, 0, 0)
-
-        // 시작일 = baseDate + offset일 + 시작시간
-        calculatedStartDate = new Date(baseDate)
-        calculatedStartDate.setDate(calculatedStartDate.getDate() + submissionStartOffset)
-        calculatedStartDate.setHours(startTime.hours, startTime.minutes, 0, 0)
-
-        // 마감일 = 시작일(날짜만) + duration일 + 마감시간
-        calculatedEndDate = new Date(calculatedStartDate)
-        calculatedEndDate.setHours(0, 0, 0, 0)
-        calculatedEndDate.setDate(calculatedEndDate.getDate() + submissionDurationDays)
-        calculatedEndDate.setHours(endTime.hours, endTime.minutes, 0, 0)
-
-        debugLog('registerBidding: Submission dates calculated', {
+        // 서버의 오늘 날짜(년/월/일)를 그대로 사용해 00:00 UTC 시점 생성
+        const now = new Date()
+        const baseDate = new Date(Date.UTC(
+          now.getFullYear(),
+          now.getMonth(),
+          now.getDate(),
+          0, 0, 0
+        ))
+
+        // 시작일 = baseDate + offset일 + 입력 시간(숫자 그대로)
+        const tempStartDate = new Date(baseDate)
+        tempStartDate.setUTCDate(tempStartDate.getUTCDate() + submissionStartOffset)
+        tempStartDate.setUTCHours(startTime.hours, startTime.minutes, 0, 0)
+
+        // 마감일 = 시작일 날짜만 기준 + duration일 + 입력 마감 시간
+        const tempEndDate = new Date(tempStartDate)
+        tempEndDate.setUTCHours(0, 0, 0, 0)
+        tempEndDate.setUTCDate(tempEndDate.getUTCDate() + submissionDurationDays)
+        tempEndDate.setUTCHours(endTime.hours, endTime.minutes, 0, 0)
+
+        calculatedStartDate = tempStartDate
+        calculatedEndDate = tempEndDate
+
+        debugLog('registerBidding: Submission dates calculated (Input Value Based)', {
           baseDate: baseDate.toISOString(),
           calculatedStartDate: calculatedStartDate.toISOString(),
           calculatedEndDate: calculatedEndDate.toISOString(),