diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/SegmentPost.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/SegmentPost.java
index ac4e804046b42ef63e0cbe5cd82030a377802ca7..ad9d50227fa092dbc5d35a6f2be83bcb3b6e43de 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/SegmentPost.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/segment/SegmentPost.java
@@ -85,6 +85,7 @@ public class SegmentPost extends AbstractPost {
             long hourSlice = DateTools.getHourSlice(newSegment.getStartTime());
             long daySlice = DateTools.getDaySlice(newSegment.getStartTime());
             int second = DateTools.getSecond(newSegment.getStartTime());
+            logger.debug("minuteSlice: %s, hourSlice: %s, daySlice: %s, second:%s", minuteSlice, hourSlice, daySlice, second);
 
             SegmentWithTimeSlice segmentWithTimeSlice = new SegmentWithTimeSlice(newSegment, minuteSlice, hourSlice, daySlice, second);
             String newSegmentJsonStr = gson.toJson(newSegment);
diff --git a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/tools/DateTools.java b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/tools/DateTools.java
index 4dd288addc9758750cd3c4b819fc71c5a9767462..fc01051e9910e9f83a682e41dd58e71be47f9117 100644
--- a/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/tools/DateTools.java
+++ b/skywalking-collector/skywalking-collector-worker/src/main/java/com/a/eye/skywalking/collector/worker/tools/DateTools.java
@@ -2,6 +2,7 @@ package com.a.eye.skywalking.collector.worker.tools;
 
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
+import java.util.TimeZone;
 
 /**
  * @author pengys5
@@ -19,7 +20,7 @@ public class DateTools {
     }
 
     public static long getMinuteSlice(long time) {
-        Calendar calendar = Calendar.getInstance();
+        Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("GMT+8:00"));
         calendar.setTimeInMillis(time);
         String timeStr = minuteDateFormat.format(calendar.getTime());
         return Long.valueOf(timeStr);
@@ -38,4 +39,12 @@ public class DateTools {
         String timeStr = dayDateFormat.format(calendar.getTime()) + "0000";
         return Long.valueOf(timeStr);
     }
+
+    public static long changeToUTCSlice(long timeSlice) {
+        if (TimeZone.getDefault().getID().equals("GMT+08:00")) {
+            return timeSlice;
+        } else {
+            return timeSlice - 800;
+        }
+    }
 }
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java
deleted file mode 100644
index 63c423de420517cdcc610346c4b0d23c4b1c4bc1..0000000000000000000000000000000000000000
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/MergePersistenceMemberTestCase.java
+++ /dev/null
@@ -1,7 +0,0 @@
-package com.a.eye.skywalking.collector.worker;
-
-/**
- * @author pengys5
- */
-public class MergePersistenceMemberTestCase {
-}
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/segment/SegmentPostTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/segment/SegmentPostTestCase.java
index cba0303bf3ec380195de6b94330c722b7597bd5f..183fa75930ee122b01c924ddc3043b96e0101838 100644
--- a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/segment/SegmentPostTestCase.java
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/segment/SegmentPostTestCase.java
@@ -14,6 +14,7 @@ import com.a.eye.skywalking.collector.worker.segment.mock.SegmentMock;
 import com.a.eye.skywalking.collector.worker.segment.persistence.SegmentCostSave;
 import com.a.eye.skywalking.collector.worker.segment.persistence.SegmentExceptionSave;
 import com.a.eye.skywalking.collector.worker.segment.persistence.SegmentSave;
+import com.a.eye.skywalking.collector.worker.tools.DateTools;
 import com.google.gson.JsonObject;
 import org.junit.Assert;
 import org.junit.Before;
@@ -166,48 +167,48 @@ public class SegmentPostTestCase {
 
         segmentPost.onReceive(cacheServiceSegmentAsString);
 
-        Assert.assertEquals(201703310915L, segmentSaveAnswer_1.minute);
-        Assert.assertEquals(201703310900L, segmentSaveAnswer_1.hour);
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), segmentSaveAnswer_1.minute);
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), segmentSaveAnswer_1.hour);
         Assert.assertEquals(201703310000L, segmentSaveAnswer_1.day);
 
-        Assert.assertEquals(201703310915L, segmentSaveAnswer_2.minute);
-        Assert.assertEquals(201703310900L, segmentSaveAnswer_2.hour);
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), segmentSaveAnswer_2.minute);
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), segmentSaveAnswer_2.hour);
         Assert.assertEquals(201703310000L, segmentSaveAnswer_2.day);
 
-        Assert.assertEquals(201703310915L, segmentCostSaveAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, segmentCostSaveAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), segmentCostSaveAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), segmentCostSaveAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, segmentCostSaveAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, globalTraceAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, globalTraceAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), globalTraceAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), globalTraceAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, globalTraceAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, segmentExceptionSaveAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, segmentExceptionSaveAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), segmentExceptionSaveAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), segmentExceptionSaveAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, segmentExceptionSaveAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeRefMinuteAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeRefMinuteAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeRefMinuteAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeRefMinuteAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeRefMinuteAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeRefHourAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeRefHourAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeRefHourAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeRefHourAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeRefHourAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeRefDayAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeRefDayAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeRefDayAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeRefDayAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeRefDayAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeMinuteAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeMinuteAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeMinuteAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeMinuteAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeMinuteAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeHourAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeHourAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeHourAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeHourAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeHourAnalysisAnswer.segmentWithTimeSlice.getDay());
 
-        Assert.assertEquals(201703310915L, nodeDayAnalysisAnswer.segmentWithTimeSlice.getMinute());
-        Assert.assertEquals(201703310900L, nodeDayAnalysisAnswer.segmentWithTimeSlice.getHour());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310915L), nodeDayAnalysisAnswer.segmentWithTimeSlice.getMinute());
+        Assert.assertEquals(DateTools.changeToUTCSlice(201703310900L), nodeDayAnalysisAnswer.segmentWithTimeSlice.getHour());
         Assert.assertEquals(201703310000L, nodeDayAnalysisAnswer.segmentWithTimeSlice.getDay());
     }
 
diff --git a/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/tools/DateToolsTestCase.java b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/tools/DateToolsTestCase.java
new file mode 100644
index 0000000000000000000000000000000000000000..06f4b723dfa192958e1c357b98a8760ead824bda
--- /dev/null
+++ b/skywalking-collector/skywalking-collector-worker/src/test/java/com/a/eye/skywalking/collector/worker/tools/DateToolsTestCase.java
@@ -0,0 +1,28 @@
+package com.a.eye.skywalking.collector.worker.tools;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.TimeZone;
+
+/**
+ * @author pengys5
+ */
+public class DateToolsTestCase {
+
+    @Test
+    public void testUTCLocation() {
+        TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
+        long timeSlice = 201703310915L;
+        long changedTimeSlice = DateTools.changeToUTCSlice(timeSlice);
+        Assert.assertEquals(201703310115L, changedTimeSlice);
+    }
+
+    @Test
+    public void testUTC8Location() {
+        TimeZone.setDefault(TimeZone.getTimeZone("GMT+08:00"));
+        long timeSlice = 201703310915L;
+        long changedTimeSlice = DateTools.changeToUTCSlice(timeSlice);
+        Assert.assertEquals(201703310915L, changedTimeSlice);
+    }
+}