Um you could do via Q-function get it to call this script.
#IF
Hour 19 20
#ACT
PARAM1 0
MonGen OmaKing 1
sendmsg 1 "OmaKing Has Just Spawned In Bichon Province"
break
No idea if that would work. i've just put that togther but i dont see why it wouldn't.
Not sure on what time 19 20 is, maybe 7:20? lol.
PARAM 0 is the map it will spawn on.
and then the Mob, and amount. and then finally the message.
someone will probably show you a much better script lol.