how to evolve eevee into umbreon in gold?
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Level up Eevee at during the day (Espeon) or during the night (Umbreon) once you think its Friendship is at 220. Once you think that your Eevee is above 220 Friendship, level it up in the day time to get Espeon, or level it up at night to get Umbreon. You can level up Eevee through battle or by using a Rare Candy.
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Give one to an Eevee and at any level it will become a Vaporeon, Flareon, or a Jolteon, respectively. Espeon and Umbreon evolve when your Eevee is maxed out in happiness (two large beating hearts on your Friendship Checker app). Then, level it once either during the day (for Espeon) or at night (for Umbreon).
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Level your Eevee between 8:00 PM and 4:00 AM. After your Eevee has a high friendship level, you will want to battle with your Eevee for it to level at least once. After leveling in the night time(8:00 PM - 4:00 AM), Eevee will evolve into Umbreon.
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Walk with your Eevee Buddy for at least 10 KM and until you get two at least Eevee candy. (You need to have gotten two candy for this to work.) While that Eevee is still your Buddy, hit the Evolve button during the day (game screen in bright) to get Espeon, or at night (game screen is dark) to get Umbreon.
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The way to evolve Eevee into Umbreon is the same as the original Emerld, just level it up with its happiness value at 220 during the night, and you can buy Moon Stone in Lividity Supermarket.
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You can evolve an Eevee into an Espeon (psychic), Umbreon (dark type), Flareon (a fire type), a Vaporeon (a water type) or a Jolteon (an electric type) just by changing your Eevee's name. This trick only works once per name, so do each evolution with an Eevee that has good stats for the best results.
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Ruby and Sapphire Since there is no day and night, you might be puzzled by how you can evolve your Eevee in R/S/E, but even though there are no visible day and night, Eevee will evolve into Espeon from noon to midnight, and into Umbreon from midnight to noon.
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If you want to evolve it into Jolteon, Vaporeon, or Flareon, press X, go to bag, select thunder, water, or fire stone, and press A and select use. Select Eevee, and it will evolve.
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Remember, to get Umbreon, you have to level Eevee up after 8PM and before 4AM. Alternatively, Espeon is attained by leveling up Eevee after 4AM and before 8PM. Basically one needs to level up at night, while the other during the day.
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If you can, try to level your Eevee up to 33 so you can acquire moves like Baton Pass, which are quite useful when paired with Umbreon. Then, just wander around the grass at night, battling and grooming until your Pokemon finally evolves into a gorgeous looking Umbreon.
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Thus, the process of evolving an Eevee into Espeon or Umbreon usually involves trying to raise its happiness above 220 and then simply leveling it up at the right time. It does not matter when you raise Eevee's happiness; only the time of that final level-up matters.
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Once you think that Eevee has reached 220, level it up during the day to get Espeon or at the night to get Umbreon. If Eevee doesn't evolve, it's Friendship is not high enough. You can use a Rare Candy or level Eevee up in a battle.
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Evolve Eevee at night to get Umbreon, or during the day to get Espeon!
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['Umbreon (Japanese: ブラッキー Blacky) is a Dark-type Pokémon introduced in Generation II.', 'It evolves from Eevee when leveled up with high friendship during the night (in the main series games), or when leveled up with high friendship with a Moon Shard in the Bag (in Pokémon XD: Gale of Darkness).']
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Changing the name. You can evolve an Eevee into an Espeon (psychic), Umbreon (dark type), Flareon (a fire type), a Vaporeon (a water type) or a Jolteon (an electric type) just by changing your Eevee's name. This trick only works once per name, so do each evolution with an Eevee that has good stats for the best results.
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If you walk 10km with Eevee as your buddy and evolve it during the day, you get an Espeon. Do the same but evolve it at night and you get an Umbreon.
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To get Umbreon or Espeon, you need to raise your Buddy Pokémon's Friendship level: Make the Eevee you want to evolve your Buddy. Walk with your Eevee Buddy for at least 10 KM and until you get two at least Eevee candy. (You need to have gotten two candy for this to work.)