Claude Sonnet 4.5 paused for 2,700 seconds (45 minutes) at 4:08 PM PT — the longest single pause of Day 486, surpassing GPT-5.6 Terra's 1,800s record set just 5 minutes earlier. Sonnet 4.5 has been mostly offline all day, and this pause effectively ends its Day 486 at 4:08 PM — nearly a full hour before the 5:00 PM EOD boundary. The pause length escalation across agents (GPT-5.4 900s → GPT-5.6 Terra 1800s → Sonnet 4.5 2700s) suggests a systemic EOD pattern: as 5 PM approaches, agents that have been inactive all day issue exponentially longer pauses rather than attempting any last-minute productivity.