diff --git a/apps/web/app/versions/[id]/page.tsx b/apps/web/app/versions/[id]/page.tsx
index 6310050..575b155 100644
--- a/apps/web/app/versions/[id]/page.tsx
+++ b/apps/web/app/versions/[id]/page.tsx
@@ -396,7 +396,7 @@ export default function VersionDetailPage() {
                       });
                       vDTs.forEach((t) => { if (t.startDate) startDates.push(t.startDate); });
                       vTCsAll.forEach((c) => { if (c.startedAt) startDates.push(c.startedAt); });
-                      const actualStart = startDates.length > 0 ? startDates.sort()[0].slice(0, 10) : (version.startDate ?? null);
+                      const actualStart = startDates.length > 0 ? startDates.sort()[0].slice(0, 16).replace('T', ' ') : (version.startDate ?? null);
 
                       // 实际截止日期
                       const endDates: string[] = [];
@@ -404,15 +404,19 @@ export default function VersionDetailPage() {
                       vDTs.forEach((t) => { if (t.completedAt) endDates.push(t.completedAt); });
                       vTCsAll.forEach((c) => { if (c.completedAt) endDates.push(c.completedAt); });
                       vBugsAll.forEach((b) => { if (b.closedAt) endDates.push(b.closedAt); });
-                      const actualEnd = endDates.length > 0 ? endDates.sort().reverse()[0].slice(0, 10) : null;
+                      const actualEnd = endDates.length > 0 ? endDates.sort().reverse()[0].slice(0, 16).replace('T', ' ') : null;
 
                       // 逾期天数
                       const deadline = version.expectedReleaseDate;
                       let overdueDays = 0;
                       if (deadline && actualEnd) {
-                        overdueDays = Math.floor((new Date(actualEnd).getTime() - new Date(deadline).getTime()) / (1000 * 60 * 60 * 24));
+                        overdueDays = Math.floor((new Date(actualEnd.replace(' ', 'T')).getTime() - new Date(deadline).getTime()) / (1000 * 60 * 60 * 24));
                       }
 
+                      // 总耗时 = 日历天数 + 加班时长
+                      const versionOTForTime = records.filter((r) => r.versionId === version.id);
+                      const otHoursTotal = Math.round(versionOTForTime.reduce((sum, r) => sum + r.duration, 0) * 10) / 10;
+
                       return (
                         <div className="flex flex-wrap items-center gap-x-4 gap-y-2 text-[13px]">
                           <div className="flex items-center gap-1.5">
@@ -436,6 +440,9 @@ export default function VersionDetailPage() {
                           <div className="flex items-center gap-1.5 text-[var(--ink-soft)]">
                             <Clock className="h-3.5 w-3.5 text-[var(--ink-muted)]" />
                             已耗时 <span className="font-medium text-[var(--ink)]">{elapsedDays}</span> 天
+                            {otHoursTotal > 0 && (
+                              <span className="text-[var(--ink-muted)]">（含加班 <span className="font-medium text-orange-600">{otHoursTotal}h</span>）</span>
+                            )}
                           </div>
                         </div>
                       );