Max Battles are the co-op fights at Power Spots, which are their own map points rather than Gyms or PokéStops. Max Monday is the weekly slot, and it features that week's Dynamax Pokémon from 6 AM to 9 PM local time. It's the newest system in the game.

Announced Max slots

Max Monday is expected every Monday, 6 AM to 9 PM local time: Oct 5, Oct 12, Oct 19, Oct 26, Nov 2, Nov 9. Scopely names each week's species closer to the day, and the row here fills in when it does.

Dynamax debuts this season

The species above are the ones the season post named. Weekly Max Monday rows come from the cadence, and each one fills in with its species when Scopely names it.