diff --git a/cs-harmonic/cs-harmonic-api/src/main/java/com/njcn/csharmonic/offline/mincfg/AnalyseComtradeCfg.java b/cs-harmonic/cs-harmonic-api/src/main/java/com/njcn/csharmonic/offline/mincfg/AnalyseComtradeCfg.java
index ae5fc63..fee5335 100644
--- a/cs-harmonic/cs-harmonic-api/src/main/java/com/njcn/csharmonic/offline/mincfg/AnalyseComtradeCfg.java
+++ b/cs-harmonic/cs-harmonic-api/src/main/java/com/njcn/csharmonic/offline/mincfg/AnalyseComtradeCfg.java
@@ -679,7 +679,7 @@ public class AnalyseComtradeCfg {
 
             strFileLine = sr.readLine(); // ⑩
             comtradeCfg.setTimeStart(LocalDateTime.parse(strFileLine, sdf));
-            comtradeCfg.setTimeEnd(comtradeCfg.getTimeStart().plusSeconds(nMSTotal/1000L));;
+            comtradeCfg.setTimeEnd(LocalDateTime.parse(strFileLine, sdf).plusNanos(nMSTotal * 1000000));;
             comtradeCfg.setPath(file.getOriginalFilename());
 
             sr.close();