diff --git a/tracking/statistics.go b/tracking/statistics.go
index 2300486..64115c8 100644
--- a/tracking/statistics.go
+++ b/tracking/statistics.go
@@ -158,10 +158,10 @@ func GetPlatform(startDate, endDate time.Time) *pirsch.VisitorStats {
 }
 
 func GetVisitorTimeOfDay(startDate, endDate time.Time) []pirsch.TimeOfDayVisitors {
-	max := startDate.Add(time.Hour * 24 * 7)
+	min := endDate.Add(-time.Hour * 24 * 7)
 
-	if endDate.After(max) {
-		endDate = max
+	if startDate.Before(min) {
+		startDate = min
 	}
 
 	visitors, err := analyzer.TimeOfDay(&pirsch.Filter{From: startDate, To: endDate})