@NianticHelp
Due to previous issues impacting Trainers encountering certain Pokémon during Raids, from 9/7 1 pm PDT to 9/8 1 pm PDT, you can receive up to 2 free Raid passes per day. Thank you and we apologize for the inconvenience.

明日か明後日に無料レイドパス2枚くれるらしい