It is possible that you are thinking of a different event or that the event hasn't been announced yet.
To find out about upcoming Pokémon events, I recommend:
* Checking the official Pokémon website: [https://www.pokemon.com/us/](https://www.pokemon.com/us/)
* Following the official Pokémon social media channels:
* Facebook: [https://www.facebook.com/Pokemon](https://www.facebook.com/Pokemon)
* Twitter: [https://twitter.com/Pokemon](https://twitter.com/Pokemon)
* Instagram: [https://www.instagram.com/pokemon](https://www.instagram.com/pokemon)
* Looking for information on popular Pokémon news websites and forums.
Please provide more details about the event if you have them, and I will do my best to help you find the information.