nope, you can't, but look in the bright side, it can turn day and night, and the other region's Pokemon are available.
u can't
You can't. Not without and not with the national dex, ou can't get to other regions at all in Pokemon Diamond and Pearl
You get a pikachu by going to Mr. Backlot's yard and looking in there. To get other rare Pokemon from other reigons you have to get the National PokeDex.
I'm very sorry to disapoint you, but I don't belive you can. You could try to get in contact with 'The Pokemon Compony' and suggest a game like Diamond and Pearl to be able to travle to different reigons. Like it may start at the Kanto, then you go to Jhoto and so on and so fourth. For more info. on Pokemon Diamond and Pearl, visit http://pokemon.marriland.com.
No, there are no other regions in Pokemon Diamond.
there isn't a Pokemon ranch on Pokemon diamond, its a complete other game! there isn't a Pokemon ranch on Pokemon diamond, its a complete other game!
It does work, but the codes are different for Diamond, Pearl, Platinum, HeartGold and SoulSilver, even the same codes. The codes are even different for other reigons such as Japan, Europe and America. So make sure you verified that closely. ~Lucario
In any Pokemon game(ex.Red,B,Y) complete the (reigon) Dex and collect the National Dex, enabling Pokemon from other reigons catchable.
ditto
You have to battle other Pokemon with it.
you can't get the pokemon off of pokemon black on diamond, but you can do it the other way around.
No, Unova, Sinnoh, Hoenn, Johto, and Kanto are not pokemon, but are the reigons of ¨pokemon world.¨