--- a/net/minecraft/server/commands/ScheduleCommand.java
+++ b/net/minecraft/server/commands/ScheduleCommand.java
@@ -33,7 +33,7 @@
     });
     private static final SimpleCommandExceptionType ERROR_MACRO = new SimpleCommandExceptionType(Component.translatableEscape("commands.schedule.macro"));
     private static final SuggestionProvider<CommandSourceStack> SUGGEST_SCHEDULE = (commandcontext, suggestionsbuilder) -> {
-        return SharedSuggestionProvider.suggest((Iterable) ((CommandSourceStack) commandcontext.getSource()).getServer().getWorldData().overworldData().getScheduledEvents().getEventsIds(), suggestionsbuilder);
+        return SharedSuggestionProvider.suggest((Iterable) ((net.minecraft.commands.CommandSourceStack) commandcontext.getSource()).getLevel().serverLevelData.getScheduledEvents().getEventsIds(), suggestionsbuilder); // Paper - Make schedule command per-world
     };
 
     public ScheduleCommand() {}
@@ -58,7 +58,7 @@
         } else {
             long j = source.getLevel().getGameTime() + (long) time;
             ResourceLocation minecraftkey = (ResourceLocation) function.getFirst();
-            TimerQueue<MinecraftServer> customfunctioncallbacktimerqueue = source.getServer().getWorldData().overworldData().getScheduledEvents();
+            TimerQueue<MinecraftServer> customfunctioncallbacktimerqueue = source.getLevel().serverLevelData.overworldData().getScheduledEvents(); // CraftBukkit - SPIGOT-6667: Use world specific function timer
             Optional<net.minecraft.commands.functions.CommandFunction<CommandSourceStack>> optional = ((Either) function.getSecond()).left();
             String s;
 
@@ -93,7 +93,7 @@
     }
 
     private static int remove(CommandSourceStack source, String eventName) throws CommandSyntaxException {
-        int i = source.getServer().getWorldData().overworldData().getScheduledEvents().remove(eventName);
+        int i = source.getLevel().serverLevelData.getScheduledEvents().remove(eventName); // Paper - Make schedule command per-world
 
         if (i == 0) {
             throw ScheduleCommand.ERROR_CANT_REMOVE.create(eventName);