diff --git a/parser/devicePrsInternal.go b/parser/devicePrsInternal.go
index 2f87a92..89aba53 100755
--- a/parser/devicePrsInternal.go
+++ b/parser/devicePrsInternal.go
@@ -18,6 +18,10 @@ import (
 	"../model"
 )
 
+const (
+  ALLOWED_TIME_HOUR = -1
+)
+
 type ruptelaTchHeader struct {
 	Length    uint16
 	IMEI      uint64
@@ -324,7 +328,7 @@ func parseData(data []byte, imei uint64, tagOption *opt.Options) (rec DeviceReco
 
 		tstampToNow := time.Since(deviceRecord.Tstamp)
         hCurr := math.Round(tstampToNow.Hours()*100)/100
-		if hCurr >= -24 {
+		if hCurr >= ALLOWED_TIME_HOUR {
 			deviceRecords = append(deviceRecords, deviceRecord)
 		}