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https://pokemonblog.com/2021/01/12/sinnoh-celebration-event-now-underway-for-pokemon-go-players-in-the-americas-and-greenland-until-january-17-at-8-p-m-local-time/
Sinnoh Celebration event now underway for Pokémon GO players in the Americas and Greenland until January 17 at 8 p.m. local time