The chances of getting a shiny Eevee in Pokemon Go depend on various factors, such as the method used to obtain it and the type of Eevee evolution desired. Here are some of the odds mentioned in the search results:

• Community Day: During Community Day events, the odds of getting a shiny Eevee are approximately 1 in 25.
• Wild encounters: The odds of encountering a shiny Eevee in the wild are 1 in 450.
• Egg hatching: Shiny Eevee can hatch from 5km eggs, but the probability of getting one is slightly low.
• Field Research: Completing certain Field Research tasks during special events can reward players with an Eevee encounter, which has a chance to be shiny.
• Forced evolutions: Most Eeveelutions can be forced by evolving a certain number of shiny Eevee. For example, evolving five shiny Eevee guarantees a shiny Umbreon, Espeon, Leafeon, Glaceon, and Sylveon.
• Random evolutions: Some Eeveelutions, such as Vaporeon, Flareon, and Jolteon, cannot be guaranteed through forced evolution. The odds of getting all three Kanto Eeveelutions with nine shiny Eevee are 92% .

Its important to note that these odds are not exact and can vary based on individual gameplay. Additionally, some methods, such as using Cute Charm to improve the odds of a shiny female Eevee, are specific to certain games.