An announcement has been made on the official Pokémon GO website, which has informed that the games server will be taken down globally for 7 Hours on 1 June 2020 from 11:00 a.m. to 6:00 p.m. PDT. This will be done because Pokémon GO will be undergoing server maintenance. During this time, the game will be inaccessible to all trainers.
If you are wondering why you are not able to get into the game, then look at the date, and if it’s June 1, you now know the answer. If you are here to find out when the maintenance end will end, then as we mentioned earlier, it will end around 6:00 p.m. PDT.
Pokémon GO will be experiencing global downtime for seven hours on Monday, June 1, 2020. The game will be undergoing server maintenance. We apologize in advance for any inconvenience that this might cause.The Pokémon GO team
About Pokémon Go:
Pokémon Go is a 2016 augmented reality mobile game developed and published by Niantic in collaboration with The Pokémon Company for iOS and Android devices.
Source: Pokémon Go Website