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Pokémon GO Raid Bosses in May 2020: Full Schedule and Tier Notes

May 2020 raids changed with the Throwback Challenge weeks. Track the five-star sequence—Giratina (Altered Forme), Virizion, Terrakion, and Reshiram—and see examples from the themed lower-tier pools.
WorldMay 2020: Full Schedule and Tier Notes Length1 min Posted Quest giverVGSources Team
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Pokémon GO’s raid bosses changed several times in May 2020. The five-star lineup moved from Giratina (Altered Forme) to Virizion, then Terrakion, and finally Reshiram. Lower-tier raids also shifted with the month’s Kanto, Johto, Hoenn, and Sinnoh Throwback Challenge weeks.

Five-star raid boss schedule

The five-star handoffs occurred at 20:00 UTC. Raid Hour events, by contrast, were scheduled for 18:00 local time.

Period Five-star boss Notes
May 1–12, ending May 12 at 20:00 UTC Giratina (Altered Forme) Its shiny variant was available during this return.
May 12–19, ending May 19 at 20:00 UTC Virizion Raid Hour was scheduled for May 13 at 18:00 local time.
May 19–26, ending May 26 at 20:00 UTC Terrakion Its shiny variant was available; Raid Hour was scheduled for May 20 at 18:00 local time.
From May 26 at 20:00 UTC Reshiram Reshiram was scheduled to remain in five-star raids through June 16 at 20:00 UTC.

Niantic announced Reshiram, Zekrom, and Kyurem for five-star raids on May 19, with Reshiram arriving first on May 26. The announcement is in Niantic’s official Pokémon GO news archive; the dated transitions and Raid Hour schedule are recorded by Serebii’s raid-events archive.

Lower-tier raids followed the Throwback Challenge weeks

Lower-tier pools were themed around the four Throwback Challenge periods: Kanto beginning May 1, Johto May 8, Hoenn May 15, and Sinnoh May 22. A community-maintained historical raid-boss list records the themed pools by raid tier. Treat it as a compiled historical roster: it does not independently establish that every listed Pokémon appeared continuously at every location for the full period.

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Examples of Tier 1 bosses

  • Kanto: Bulbasaur, Charmander, Squirtle, Meowth, Koffing, and Magikarp.
  • Johto: Chikorita, Cyndaquil, Totodile, Mareep, Timburr, and Klink.
  • Hoenn: Treecko, Torchic, Mudkip, and Swablu.
  • Sinnoh: Turtwig, Chimchar, Piplup, Drifloon, Timburr, and Klink.

Examples of Tier 3 bosses

  • Johto-themed pool: Alolan Raichu, Espeon, Umbreon, Shuckle, Skarmory, and Donphan.
  • Sinnoh-themed pool: Roserade, Bastiodon, Floatzel, Skuntank, and Alolan Raichu.

These are examples, not a complete tier-by-tier list. Check the dated historical roster for the full entries, keeping each Pokémon’s raid tier and event period attached; raid tiers were later changed in August 2020, so present-day tier conventions should not be applied to this month.

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  • There’s a Pikachu within your Pokémon GO Plus + that can sing you lullabies and act as your morning alarm; Pikachu grows friendlier the more you sleep, unlocking even more sounds!
  • Spin PokéStops or throw Poké Balls automatically in Pokémon GO for hands-free gameplay (and Great Balls and Ultra Balls can be thrown too!)
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  • Catch Pokémon and track your rest rhythm with the Pokémon GO Plus + accessory!
  • Keep track of your sleep with the press of a button
  • Press and hold the central button on the Pokémon GO Plus + accessory and place it by your pillow to track your rest rhythm on the Pokémon Sleep app
  • There’s a Pikachu within your Pokémon GO Plus + that can sing you lullabies and act as your morning alarm; Pikachu grows friendlier the more you sleep, unlocking even more sounds!
  • Spin PokéStops or throw Poké Balls automatically in Pokémon GO for hands-free gameplay (and Great Balls and Ultra Balls can be thrown too!)

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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