diff --git a/app.go b/app.go
index c2005f1..6cff05f 100644
--- a/app.go
+++ b/app.go
@@ -23,6 +23,9 @@ type App interface {
 	GetNowSeconds() int64
 	GetNowMillis() int64
 	GetNowNano() int64
+	GetTimeOffset() int32
+	SetTimeOffset(int32)
+	GetLocation() *time.Location
 	RegisterMainThreadCb(func())
 }
 
@@ -50,6 +53,8 @@ type app struct {
 	chGoLoopWait      chan int64
 	nowTime           time.Time
 	nowUnixNano       int64
+	timeOffset        int32
+	location          *time.Location
 	imMsgHandlers     [1024]func(q5.Args)
 	maxRunDelay       int64
 	maxScheduleTime   int64
@@ -60,6 +65,7 @@ type app struct {
 func (this *app) init(userApp UserApp) {
 	this.userApp = userApp
 	this.nowTime = time.Now()
+	this.SetTimeOffset(0)
 	atomic.StoreInt64(&this.nowUnixNano, this.nowTime.UnixNano())
 	_timer = new(timer)
 	_timer.init()
@@ -223,6 +229,22 @@ func (this *app) GetNowNano() int64 {
 	return this.nowUnixNano
 }
 
+func (this *app) GetTimeOffset() int32 {
+	return this.timeOffset
+}
+
+func (this *app) SetTimeOffset(offset int32) {
+	this.timeOffset = offset
+	this.location = time.FixedZone("UTC-f5", int(offset))
+	if this.location == nil {
+		panic("SetTimeOffset error")
+	}
+}
+
+func (this *app) GetLocation() *time.Location {
+	return this.location
+}
+
 func (this *app) outputRuningLog() {
 }
 
diff --git a/syslog.go b/syslog.go
index 9d5b8fd..a9ed9ea 100644
--- a/syslog.go
+++ b/syslog.go
@@ -98,7 +98,7 @@ func (this *sysLog) addLog(category int32, prefixStr string,
 	format string, args ...interface{}) {
 	p := &logMsgNode{}
 	p.category = category
-	p.logMsg = time.Now().Format("2006-01-02 15:04:05") +
+	p.logMsg = q5.FormatUnixDateTime(_app.GetNowSeconds(), _app.GetLocation()) +
 		prefixStr + " " +
 		fmt.Sprintf(format, args...) + "\n"
 	if category == LOG_INFO {
@@ -130,7 +130,9 @@ func (this *sysLog) goSaveToFile() {
 		this.msgMutex.Unlock()
 		if workNode != nil {
 			logDir := fmt.Sprintf(SYS_LOG_ROOT, GetApp().GetPkgName())
-			fileName := fmt.Sprintf(TGLOG_FILENAME, os.Getpid(), time.Now().Format("20060102"))
+			fileName := fmt.Sprintf(TGLOG_FILENAME,
+				os.Getpid(),
+				q5.FormatUnixDateEx(_app.GetNowSeconds(), _app.GetLocation()))
 			q5.ForceCreateDir(logDir)
 			if f, err := os.OpenFile(logDir+fileName, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666); err == nil {
 				for workNode != nil {
diff --git a/tglog.go b/tglog.go
index cbef632..3fc15a4 100644
--- a/tglog.go
+++ b/tglog.go
@@ -62,7 +62,7 @@ func (this *tgLog) AddTrackLogEx(
 	} {
 		AccountId: accountId,
 		Type: "track",
-		Time: time.Now().Format("2006-01-02 15:04:05"),
+		Time: q5.FormatUnixDateTime(_app.GetNowSeconds(), _app.GetLocation()),
 		EventName: eventName,
 		Ip: remoteAddr,
 		Properties: prop,
@@ -108,7 +108,9 @@ func (this *tgLog) goSaveToFile() {
 }
 
 func (this *tgLog) getLogFile(gameId int32) *os.File {
-	fileName := fmt.Sprintf(TGLOG_FILENAME, os.Getpid(), time.Now().Format("20060102"))
+	fileName := fmt.Sprintf(TGLOG_FILENAME,
+		os.Getpid(),
+		q5.FormatUnixDateEx(_app.GetNowSeconds(), _app.GetLocation()))
 	logDir := ""
 	if this.isPolyLog {
 		logDir = fmt.Sprintf(POLY_TGLOG_ROOT, _app.GetPkgName(), gameId)