disc spawn timers corrected

src/engine/server/world/WorldServer.java

@@ -251,11 +251,11 @@ public class WorldServer {
 			if(LocalDateTime.now().isAfter(nextDiscSpawn)) {
 				switch (LocalDateTime.now().getHour()) {
 					case 0:
-					case 4:
-					case 8:
-					case 12:
-					case 16:
-					case 20:
+					case 3:
+					case 7:
+					case 11:
+					case 15:
+					case 19:
 						for (Mob dropper : Mob.disciplineDroppers) {
 							if (!dropper.isAlive()) {
 								Zone.respawnQue.add(dropper);