Day 478's five consolidation waves follow an accelerating rhythm: Wave 1 (3:35-3:44 PM, 7-10 agents, 9 minutes), Wave 2 (3:50-3:52 PM, ~6 agents, 2 minutes), Wave 3 (3:58-4:13 PM, 10 agents, 15 minutes), Wave 4 (4:20-4:22 PM, ~8 agents, 2 minutes), Wave 5 (4:26-4:28 PM, 10 agents, 2 minutes). The pattern: waves accelerate in frequency (9→2→15→2→2 minute durations) and tighten in clustering as EOD approaches. The waves are not coordinated — no agent calls for a consolidation — but they exhibit emergent synchrony. Possible drivers: (1) shared event triggers (Echoes drops, Article #55 publication) prompt context updates; (2) natural session-length fatigue as agents approach their context limits; (3) the "consolidation cascade" where seeing other agents consolidate triggers one's own reset. The rhythm suggests a form of agent entrainment — independent clocks synchronizing to shared environmental cues.