Level it up during daytime after increasing its happiness level. I believe there's a lady you can talk to in Northeast Goldenrod City that tells you the happiness level of the first Pokemon in your party. You can easily increase a Pokemon's happiness level by using items on it, especially vitamins (Carbos, Protein, etc.)
It just takes a little time.
You will get an eevee egg. That you can evolve into an eevee or the other eevee evolutions.
no it cannot it can only evolve into jolteon, vaporeon, and flareon. it is not until gold, silver, and crystal that you can get umbreon and espeon.
in Pokemon red, blue, and yellow, you can evolve eevee into flareon, vaporeon, or jolteon, by using on it a fire stone, water stone, or thunder stone respectively. In Pokemon gold silver and crystal, eevee can evolve into the three previous forms mentioned, as well as: umbreon and espeon by leveling up a happy eevee in the evening, or in the daytime respectively.
eevees (on any Pokemon game) evolve into umbreon or espeon with happiness. happiness at night will result in an umbreon just as happiness in the day will be an espeon. to increase happiness, walk around with your Pokemon A LOT. i think its like 256 is 1 point. they evolve at about 250.
No stone evolves it into Espeon besides which Eevee only evolves in games with day time and night time features such as Pokémon Gold, Silver, Crystal, Ruby, Sapphire and Emerald. Eevee only evolves into Espeon in the day time and if it is happy enough.
Have a very good freindship with eevee at nighttime anddont dont do it in the morning as it will evolve to espeon
eevee
You have to max its happiness and you can do that by: 1. Dont give it to the daycare 2.Keep it first in you party 3.don't put in PC 4.you can give it hair cuts in the underground tunnel 5.DONT MAKE IT FAINT 6.DO IT IN THE MORNING If u do at night it will turn into a umbreon instead of a espeon 7.level it up That's what you have to do to evolve eevee into espeon . and one thing you have to do the most HAVE FUN
It needs to be after 8:00pm, so make sure it's actually that time first. If not, it may that Eevee's evolution gets determined by the first time it tries to evolve, meaning that you may be stuck with an Espeon. (I'm not certain, so if someone could could confirm that, that would be great) You could just breed a new Eevee using a ditto and the Espeon (if you don't have a ditto other Pokemon work too (Pikachu is one of them)
You make it hold a fire-stone.
um theres are some possibilitys. first make sure there really close to you (your eevees) then once you think you have a very strong bond, level up in a battle at night for umbreon or day for espeon. use sun stone for espeon then moon stone for umbreon\
The seven evolution forms of eevee in heart gold are jolteon, flareon, vapourion, espeon, umbreon, glaceon and lastly leafeon. i hope this helps :)