The arrival of Shiny Kartana and Shiny Celesteela in Pokemon GO is a much-anticipated event, and players won't have to wait for much longer. The rare and differently colored versions of the Ultra Beasts will make their debut in Niantic's mobile game on April 4, 2024, at 10 am local time.Both these region-locked Pocket Monsters appeared in the title for the first time on September 13, 2024, so it has been almost one and a half years since their shiny forms were unlocked.This article will tell you everything you need to know about Shiny Kartana and Shiny Celesteela's Pokemon GO debut, and how you can best prepare for them.Shiny Kartana and Shiny Celesteela in Pokemon GO: Release date and shiny oddsWhen will Shiny Kartana and Shiny Celesteela make their Pokemon GO debut?Shiny Kartana and Shiny Celesteela will start appearing for the first time in the game's history at 10 am local time on April 4, 2024. To get an encounter with them, you must take down the raid bosses.Since they are both region-locked Ultra Beasts, only players in the Northern Hemisphere can battle and capture Kartana, while Celesteela raids and encounters will be limited to players in the Southern Hemisphere.Here are some of the best counters to Kartana in Pokemon GO:Mega Charizard X or Y with Fire Spin and Blast BurnMega Houndoom with Fire Fang and Flame ThrowerMega Blaziken with Fire Spin and Blast BurnReshiram with Fire Fang and Fusion FlareHeatran with Fire Spin and Magma StormShadow Charizard with Fire Spin and Blast BurnThe best counters to Celesteela are as follows:Shadow Magnezone with Volt Switch and Zap CannonMega or Shadow Ampharos with Volt Switch and Zap CannonMega or Shadow Manetric with Thunder Fang and ThunderMega or Shadow Charizard with Fire Spin and Blast BurnMega or Shadow Blaziken with Fire Spin and Blast BurnMega or Shadow Houndoom with Fire Fang and FlamethrowerWhat are the odds of finding Shiny Kartana and Shiny Celesteela in Pokemon GO?Upon successfully taking down the raid bosses, you have a 1-in-20 chance of running into their shiny forms. This means each encounter has a 5% chance of being shiny, and not that you are guaranteed one shiny encounter if you defeat 20 raids.To learn more about Pokemon GO, check out our other articles:Ditto disguisesPokeStop Showcases ScheduleIs the Wonder Ticket worth it in Pokemon GO World of Wonders?GO Battle League World of Wonders scheduleBuddy evolution Adventure Together guide in Pokemon GOBest Fast Attacks in Pokemon GO