Question: how to evolve eevee into umbreon pokemon go 2020?
Answer: If you're after a Gen 2 Umbreon or Espeon, you should make your Eevee a Buddy, walk it for 10km and earn two candies while you're at it. After that, and keeping Eevee as your buddy, evolving it either during the night will turn it into an Umbreon, and during the day will turn it into an Espeon.