November 2023 TENTATIVE Calendar (Trials, Rare Quests, Mirages Of Omega, Aether / Ascension Summons, Morlovia, Carnival Of The Gods, CoE (Dark), Underwild, Goblin Village, Atlantis, Tower Of Magic, Valhalla, Untold Tales, Dunes, Opera)

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Actually it’s November 21st, announced by the official SG/Zynga:
2023-11-21T07:00:00Z→2023-11-27T07:00:00Z: Black Friday Summon Event

It was added to the calendar before being announced, so I think it was just added as a guess or placeholder originally

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