It lasts until November 1st
I don't know, but it'll last for a long time in the freezer.
as long as the event is still going on, there is a way. it involves getting the same "event gift" in Pokemon diamond/pearl and trading to Pokemon platinum.
You asked on January 20, 2014. Halloween was 81 days ago.
24 hours
it last till October 6
The event lasts till November 12.
If your talking about the last treat from Club Penguin's Halloween Party, it's long gone. ----
either Pokemon event which passed a long time ago or by trading
you get them at an event that is long over due OR you can gameshark to get them
No, it was a decade long event.
A Pokemon adventure on Pokemon Diamond Verison can last forever if you wanted it to.
I would suggest the Global Trade Station. Deoxys is an event pokemon and the event has long since passed