Why does my Eevee keep evolving into Espeon at night in Ruby?

Question

I'm playing Pokemon Ruby version for the Gameboy advance, and I'm trying to evolve my Eevee into an Umbreon. However I've tried twice tonight to evolve it after 6pm, and both times it still evolves into espeon. The battery in the game is new and works, the clock works as it's supposed to. Any ideas on what's wrong?

Comments

I thinkk they game considers 18:00 as still day and you need to wait until 20:00 for it to consider it as night

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Even 20:00 isn't night in Gen 3. https://bulbapedia.bulbagarden.net/wiki/Time#Generation_III

Answer 1

Eevee would be able to evolve into Espeon if the in-game time was between 12:00 p.m. and 11:59 p.m. (12:00 - 23:59). Eevee would be able to evolve into Umbreon if the in-game time was between 12:00 a.m. and 11:59 a.m. (00:00 - 11:59)

According to that link given by Fizz in the comments, you'd can only get Umbreon past midnight and before noon. Since you mentioned 18:00, it's still considered day time in gen three

Comments

Thanks for the help everyone, I'll give it a try and update you all.

Edit: it worked, eevee evolved into Umbreon at 10:40 am.