diff --git a/timespans/calldesc.go b/timespans/calldesc.go
index 882efd5fd..d19c2fae5 100644
--- a/timespans/calldesc.go
+++ b/timespans/calldesc.go
@@ -7,6 +7,8 @@ import (
 	"strconv"
 )
 
+const LAYOUT = "2006-01-02T15:04:05Z07:00"
+
 /*
 The struture that is saved to storage.
 */
@@ -22,7 +24,7 @@ func (ap *ActivationPeriod) AddInterval(is ...*Interval) {
 }
 
 func (ap *ActivationPeriod) store() (result string){	
-	result += strconv.FormatInt(ap.ActivationTime.Unix(), 10) + ";"
+	result += ap.ActivationTime.Format(LAYOUT) + ";"
 	var is string
 	for _,i := range ap.Intervals {
 		is = strconv.Itoa(int(i.Month)) + "|"
@@ -44,8 +46,7 @@ func (ap *ActivationPeriod) store() (result string){
 
 func (ap *ActivationPeriod) restore(input string) {			
 	elements := strings.Split(input, ";")	
-	unix, _ := strconv.ParseInt(elements[0], 0, 64)		
-	ap.ActivationTime = time.Unix(unix, 0)			
+	ap.ActivationTime, _ = time.Parse(LAYOUT, elements[0])
 	for _, is := range elements[1:len(elements) - 1]{		
 		i := &Interval{}
 		ise := strings.Split(is, "|")		
diff --git a/timespans/calldesc_test.go b/timespans/calldesc_test.go
index f44ae4dcc..bb4cea249 100644
--- a/timespans/calldesc_test.go
+++ b/timespans/calldesc_test.go
@@ -72,9 +72,8 @@ func TestRedisGetCost(t *testing.T) {
 	}
 }
 
-func TestApStoreRestore(t *testing.T) {
-	loc, _ := time.LoadLocation("Local")
-	d := time.Date(2012, time.February, 1, 14, 30, 1, 0, loc)
+func TestApStoreRestore(t *testing.T) {	
+	d := time.Date(2012, time.February, 1, 14, 30, 1, 0, time.UTC)
 	i := &Interval{Month: time.February,
 		MonthDay:  1,
 		WeekDays:  []time.Weekday{time.Wednesday, time.Thursday},
@@ -83,7 +82,7 @@ func TestApStoreRestore(t *testing.T) {
 	ap := ActivationPeriod{ActivationTime: d}
 	ap.AddInterval(i)
 	result := ap.store()
-	expected := "1328099401;2|1|3,4|14:30:00|15:00:00|0|0|0|0;"
+	expected := "2012-02-01T14:30:01Z;2|1|3,4|14:30:00|15:00:00|0|0|0|0;"
 	if result != expected {
 		t.Errorf("Expected %q was %q", expected, result)
 	}
diff --git a/timespans/test.kch b/timespans/test.kch
index 7a60d4399..fc0b932bc 100644
Binary files a/timespans/test.kch and b/timespans/test.kch differ