30 minute mine windows

src/engine/objects/Mine.java

@@ -316,16 +316,8 @@ public class Mine extends AbstractGameObject {
             mineOpenTime = mineOpenTime.plusDays(1);
             mineCloseTime = mineCloseTime.plusDays(1);
         }
-        String aMpMOPEN = "AM";
-        String aMpMCLOSE = "AM";
-        if(mineOpenTime.isAfter(LocalDateTime.now().withHour(11).withMinute(59))){
-            aMpMOPEN = "PM";
-        }
-        if(mineCloseTime.isAfter(LocalDateTime.now().withHour(11).withMinute(59))){
-            aMpMCLOSE = "PM";
-        }
-        writer.putString(mineOpenTime.getHour() + ":" + mineOpenTime.getMinute() + " " + aMpMOPEN);
-        writer.putString(mineCloseTime.getHour() + ":" + mineCloseTime.getMinute() + " " + aMpMCLOSE);
+        writer.putLocalDateTime(mineOpenTime);
+        writer.putLocalDateTime(mineCloseTime);
         writer.put(mine.isActive ? (byte) 0x01 : (byte) 0x00);
 
         Building mineTower = BuildingManager.getBuilding(mine.buildingID);