How do you get Pokemon light platinum eevee?

In Pokémon Light Platinum, you can obtain Eevee by visiting the Pokémon Center in the city of Greenleaf. Inside the center, there is a NPC who will give you an Eevee. Make sure to have an empty slot in your party to receive it. After obtaining Eevee, you can evolve it into one of its various forms using the appropriate evolution methods.