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Seattle Worldcon 2025 will be held August 13–17, 2025.

"World Science Fiction Society", "WSFS", "World Science Fiction Convention", "Worldcon", "NASFiC", "Lodestar Award", "Hugo Award", the Hugo Award Logo, and the distinctive design of the Hugo Award Rocket are service marks of Worldcon Intellectual Property, a California non-profit corporation managed by the Mark Protection Committee of the World Science Fiction Society, an unincorporated literary society. You can contact the WSFS Mark Protection Committee at mpc@wsfs.org.

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