Umbreon and Espeon mix up
This is for people who are trying to evolve Eevee into a certain stage and it isn't working. I know this as a fact because I have had the same experience. I tried to evolve a Eevee into an Umbreon at night time but instead it evolved into an Espeon. I kept that Espeon and got another Eevee to try to evolve it into an Umbreon. I have discovered that all the things that people post up about Umbreon at night and Espeon in the day is CRAP!!!
To get Espeon you have to make the Eevee evolve between 12:00pm and 11:59pm. As for Umbreon, 12:00am to 11:59am. All the people who got it mixed up was probably because thats the way it worked on Silver, Gold and Crystal versions. Okay, now that I got that Straight you will try it and it WILL work.
More tricks, tips and cheats for this game are right here - Pokemon Emerald cheats