battle with it. a lot they usually evolve for me at lv. 30-45 when i don't use it as a main Pokemon
make it happy using items
Make Eevee as happy as you can. For Umbreon, level it up at night. For Espeon, level Eevee up in the day.
eevee evolves in to espeon if its happy and in the morning it evolves in to umbreon the same way but at night
You have to make Eevee really happy while it's is evolving,there is no certain level that will make Eevee evolve.
Eevee has to be happy with you at NIGHT, (you can get an Eevee from Bill's house in Goldenrod city after you reach Ecruteak city)
You can find Eevees at Happy Outlook.
just keep on training the eevee till it evolves. if u want a espeon than evolve it at day for umbreon evolve it at night p.s. im not totally sure if it works
Whichever level eevee becomes happy. A side note, this only works at night.
You don't get daylight. You just evolve your Pokemon (I think you mean Eevee) during the day. I evolved my Eevee into Espeon and I'm so happy!!
its not possible you can only be a girl eevee
First you have to obtain an Eevee from Bill in Goldenrod city after talking to him in Ecutrek. Then train ,battle , groom the eevee until it is fully happy. (There is a lady who will indicate when Eevee is really happy in goldenrod ( She is in the opposite side of Bills house)). Then level Eevee up during the day time and it will become and Espeon. However if you level it up during night time it will become an Umbreon.
get an eevee then make it happy in the afternoon or morning only then level it.