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Press [ to slow down, ] to speed up through 6 levels: 0.25x, 0.5x, 1x, 2x, 4x, 10x. Clock delta is multiplied by the current speed, so time_of_day advances proportionally and the visual day-night cycle stays synced. Current speed shown in the village panel header. 10x makes a full day cycle watchable in ~24 seconds. Speed changes are non-destructive to simulation determinism.