Calendar only scrolls automatically if viewing the current month

main.go

@@ -123,15 +123,21 @@ func tick () {
 		time.Sleep(time.Second)
 		drawMutex.Lock()
 
+		pageSize := columns * rows
+		within :=
+			currentMonth >= viewingMonth &&
+			currentMonth <  viewingMonth + pageSize
+
 		newMonth := canonMonth(time.Now())
 		if currentMonth != newMonth {
 			currentMonth = newMonth
 
-			pageSize := columns * rows
-			if currentMonth < viewingMonth {
-				viewingMonth -= pageSize
-			} else if currentMonth >= viewingMonth + pageSize {
-				viewingMonth += pageSize
+			if within {
+				if currentMonth < viewingMonth {
+					viewingMonth -= pageSize
+				} else if currentMonth >= viewingMonth + pageSize {
+					viewingMonth += pageSize
+				}
 			}
 			
 			application.Clear()