From b35af910086f1f94f6e307dddd230558e99bd281 Mon Sep 17 00:00:00 2001
From: JIANG <huarch97@gmail.com>
Date: Mon, 22 Dec 2025 17:01:37 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=E6=97=B6=E9=97=B4=E8=BD=B4?=
 =?UTF-8?q?=E5=89=8D=E8=BF=9B=E3=80=81=E5=90=8E=E9=80=80=E8=8C=83=E5=9B=B4?=
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---
 src/app/OlMap/Controls/Timeline.tsx                  | 2 +-
 src/components/olmap/HealthRiskAnalysis/Timeline.tsx | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/app/OlMap/Controls/Timeline.tsx b/src/app/OlMap/Controls/Timeline.tsx
index 305cf3a..32080a8 100644
--- a/src/app/OlMap/Controls/Timeline.tsx
+++ b/src/app/OlMap/Controls/Timeline.tsx
@@ -314,7 +314,7 @@ const Timeline: React.FC<TimelineProps> = ({
       if (timeRange) {
         if (next < minTime) next = maxTime;
       } else {
-        if (next <= 0) next = 1440;
+        if (next < 0) next += 1440;
       }
       return next;
     });
diff --git a/src/components/olmap/HealthRiskAnalysis/Timeline.tsx b/src/components/olmap/HealthRiskAnalysis/Timeline.tsx
index 1dd727d..9c5a401 100644
--- a/src/components/olmap/HealthRiskAnalysis/Timeline.tsx
+++ b/src/components/olmap/HealthRiskAnalysis/Timeline.tsx
@@ -177,7 +177,7 @@ const Timeline: React.FC<TimelineProps> = ({
   const handleStepBackward = useCallback(() => {
     setCurrentYear((prev: number) => {
       let next = prev - 1;
-      if (next < minTime) next = maxTime;
+      if (next < minTime) next += maxTime - minTime + 1;
       return next;
     });
   }, [minTime, maxTime]);