For a brief time on either October 21 or 22, 2020, depending on your time zone, people won’t be able to visit and explore Teyvat as usual. Instead, they’ll have to wait while miHoYo performs some Genshin Impact maintenance. However, there’s a bright side to this planned downtime. People who are Adventure Rank 5 or higher will get Primogems as an apology for having to wait before continuing their journeys.
So when can people expect the outage? Well, miHoYo said it will begin Genshin Impact maintenance at 7am UTC+8 on October 22, 2020, which is about 4pm PT/7pm ET on October 21, 2020. Its estimate suggested it could end at 11am UTC+8, which is about 8pm PT/11pm ET on October 21, 2020. After it is over, people will need to update the game in the PC launcher or start and update the game on other platforms.
As for the Primogems, people will all be getting at least 240 of them. However, miHoYo did say 60 gems will be given out for each hour the game is down. So unless it is down for over four hours, it looks like we have a pretty fixed reward.