To evolve Eevee into Espeon in Pokemon Emerald you need to raise it's happiness to max and level it up during daytime. To raise happiness you can keep the Eevee in your team for a while and fully healed up it should eventually reach max happiness to evolve in the daytime.
Evolve it from eevee
Ive hear my friends say that in Pokemon yellow you can evolve eevee in a espeon with a moon stone
so far, you cannot evolve eevee either to umbreon or espeon on FireRed because on FireRed and LeafGreen, there is no clock system. You must trade eevee to Emerald for evolving to Espeon or Umbreon
You can't. It evolves by the time of day. Since there isn't a clock, eevee won't evolve into espeon OR umbreon.
give it a thunderstone
Evolve it from eevee
Ive hear my friends say that in Pokemon yellow you can evolve eevee in a espeon with a moon stone
so far, you cannot evolve eevee either to umbreon or espeon on FireRed because on FireRed and LeafGreen, there is no clock system. You must trade eevee to Emerald for evolving to Espeon or Umbreon
You can't. It evolves by the time of day. Since there isn't a clock, eevee won't evolve into espeon OR umbreon.
give it a thunderstone
Max out Eevee's happiness during the day. ~KKMG1
You will get an eevee egg. That you can evolve into an eevee or the other eevee evolutions.
espeon evolves from Eevee fromHappiness during the day, or when around a Sun Shard
Evolve Eevee during the day
In Pokémon Flora Sky, to evolve Eevee into Espeon, you need to level up Eevee while it has high friendship with you. Make sure Eevee's friendship level is at least 220, and then level it up during the day. After meeting these conditions, Eevee will evolve into Espeon.
When Eevee loves you, level it up in the Morning.
You can use moon stone i think