Either go to an event, or use an action replay.
Technically,yes you can get Arceus in Pokemon Heartgold,but only by trading it to your Pokemon Heartgold game from Pokemon diamond,pearl or platinum.
Celebi
to get celebi
how do you get arceus whit cheats in Pokemon heartgold
Yep
you can't
You can only find celebi in the special event.
you can't! you have to get the special event celebi or use AR
You need to have the Celebi event. it is over. sorry
You can only get Celebi from Nintendo Events... =( soz
Okay, you make no sense. Apricorns make Pokeballs dumbo. You can't get Celebi in Heartgold.
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.