lastUpdate always from top of the hour.

src/engine/gameManager/ZoneManager.java

@@ -156,7 +156,7 @@ public enum ZoneManager {
         ZoneManager.hotZone = zone;
         ZoneManager.hotZoneCycle = 1;  // Used with HOTZONE_DURATION from config.
         zone.hasBeenHotzone = true;
-        ZoneManager.hotZoneLastUpdate = LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant();
+        ZoneManager.hotZoneLastUpdate = LocalDateTime.now().withMinute(0).withSecond(0).atZone(ZoneId.systemDefault()).toInstant();
 
     }