This is all fore-shadowing I'm willing to share.

world/map/npc/001-1/constable.txt

@@ -2,6 +2,7 @@
 
 001-1,50,74,0|script|Constable Perry Graf|150
 {
+    npctalk strnpcinfo(0), "Brother Bob acquired mass warp powers; Right after the day of the fool, wear something cool.";
     mes "[Constable Perry Graf]";
     mes "\"Hello. Make sure to follow the rules!\"";
     callfunc "GameRules";

world/map/npc/009-1/constable.txt

@@ -2,10 +2,45 @@
 
 009-1,55,34,0|script|Constable Bob|419
 {
+    npctalk strnpcinfo(0), "I've acquired mass warp powers; Right after the day of the fool, wear something cool.";
     mes "[Constable Bob]";
     mes "\"Hello.\"";
     mes "\"I've been getting complaints of lawlessness in Hurnscald recently, so I thought I'd come down here myself and explain the rules.\"";
     mes "\"Please make sure that you follow them!\"";
     callfunc "GameRules";
     close;
+
+/* 2022 Blackbox */
+L_End:
+    end;
+
+OnClock2339:
+    if (gettime(7) != 2022) goto L_End;
+    if (gettime(6) != 3) goto L_End;
+    if (gettime(5) != 31) goto L_End;
+    announce "The server will be going down for scheduled maintenance in ##1##B20 minutes##b.", 0;
+    end;
+
+OnClock2349:
+    if (gettime(7) != 2022) goto L_End;
+    if (gettime(6) != 3) goto L_End;
+    if (gettime(5) != 31) goto L_End;
+    announce "The server will be going down for scheduled maintenance in ##1##B10 minutes##b.", 0;
+    end;
+
+OnClock2354:
+    if (gettime(7) != 2022) goto L_End;
+    if (gettime(6) != 3) goto L_End;
+    if (gettime(5) != 31) goto L_End;
+    announce "The server will be going down for scheduled maintenance in ##1##B5 minutes##b.", 0;
+    end;
+
+OnClock2359:
+    if (gettime(7) != 2022) goto L_End;
+    if (gettime(6) != 3) goto L_End;
+    if (gettime(5) != 31) goto L_End;
+    announce "##1The server will be going down for scheduled maintenance!", 0;
+    // No need to mapexit - Cron will do the dirty job
+    end;
 }
+