LugiaHo-OhSuicuneEnteiRaikouArticunoZapdosMoltresMewtwoKyogreRayquazaArceus(event)Giratina(arceus event)Dialga(arceus event)Palkia(arceus eventLatias
no
Arceus is an event Pokemon and can only be obtained by an event.
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.
no
You Can Get Arceus By,Action Replay,You Should Have Gone To The Arceus Event,There Will Be A New Arceus Event Which Involves The 12th Movie Arceus.
its not on a route, to find arceus you need action replay and go to mount coronet.Get to the end and you'll find steps.Keep going until you find arceus at the end of them.
So far, there is no Nintendo event to get Arceus for your DS or DSi.
You can only get Arceus by an Event.
arceus is an event pokemon.
the arceus event
You can replay the arceus event with action replay.