use a moon stone for Pokemon diamond dawn stone for pearl <<<--- that is WRONG.
that's not how i evolved mine on Diamond, I got friendly with it and let it evolve (lvl it up with 2-3 hearts on the friendship checker app) at night. <<<--- that is CORRECT.
Those answers are both wrong, You evolve eevee into umbreon at night at ANY LEVEL as long as it is at night. <<<--- That is the most CORRECT answer.
(The second answer marked correct is wrong)
you have to keep it extremly happy and at midnight you give it the stone
To make Eevee evolve into an Umbreon, you have to level it up with high happiness at night.
level it up during the night time with high friend ship
well, umbreon can be a boy or girl. but in Pokemon rescues if you're an eevee and evolve into umbreon then it depends on your gender. in the Pokemon pearl and diamond there r mostly boys, well in my game.
Evolve it at 12 pm
Eevee doesn't have a set level to evolve into Umbreon. All you have to do to evolve it is max out its happiness at night. ~KKMG1
Eevee evolves to Umbreon when it has high happiness, and it levels up while it is dark.
You have to wait a while after you get to pick who evee will evolve into (umbreon) You have to wait a while after you get to pick who evee will evolve into (umbreon)
you can't, you have to max out eevee's happiness at night to evolve it into Umbreon.
Level it up at night
Moonstone
you have to level it up in the day until it loves you. for umbreon you have to level up at night until it loves you
You can get an umbreon by getting an eevee from bill in goldenrod city (in a house) and then you can evolve eevee into umbreon by making it happy and leveling it up at night time.