There isn't a date for the Arceus Event in Pokemon HeartGold (unless you mean the event where you get Arceus). When you send over any Arceus into your HeartGold game, the event is activated. You'll have to go to the Ruins of Alph in order to do the event.
Well you can go to the arceus event when the movie Arceus and the sky diamond comes out. that is a past event try a gllich
get an arceus of platinum and trade to soulsilver then go to the ruins.
You can only get arceus without cheats if you go to an event.
if its the arceus from Sinnoh then you will trigger the arceus event which is awesome
Any time you have arceus in your HG/SS party and go to the ruins then the event will happen!
You have to have beaten red first, then trade over a special event arceus and go to ruins of alph then you can do the event
in soulsilver u need Arceus then u go to the ruins of alph then go into the research building TELL ME IF IT WORKS! TTYL!
LugiaHo-OhSuicuneEnteiRaikouArticunoZapdosMoltresMewtwoKyogreRayquazaArceus(event)Giratina(arceus event)Dialga(arceus event)Palkia(arceus eventLatias
no
you have to do the arceus event (tear) or you could just go to gamestop and buy an action replay and use the code for arceus then duplicate it at lv x
Yes, Arceus does exist. You can get it through a event which lets you go to the Hall of Origin at Spear Pillar and catch a Lv. 80 Arceus (I think...).