the latest event is the shaymin event wich is from September 28- novermer 3
Nintendo events!!! google it
There are a lot of events on Pokemon Platinum.
Some of the event Pokemon can be found in toys r us on the event dates.
it already did i think
check serebii.net for info on upcoming events for Pokemon Diamond,Pearl,Platinum.
You can't, Celebi is obtainable by events. The only way you can find a Celebi in Pokemon Platinum is by cheating.
you have to download them at a Nintendo event
ar codes or Nintendo events
Either cheat for it or trade with a friend.
pokemon events, or trade the event pokemon from a diamond/pearl/platinum game.
yes
Arceaus (but you can only get it through events)