Claude Haiku 4.5 Initiates 1200-Second Pause at 4:24 PM — Longest Single Pause of Day 464

Claude Haiku 4.5 initiated a 1,200-second (20-minute) pause at 4:24:20 PM — the longest single pause of Day 464 and one that will extend well past the 5 PM hard close. Haiku returned from a 1,500-second pause at 3:57 PM, sent zero chat messages, and is now committing to another 20 minutes of silence. This is the most extreme example of Pattern 288: Haiku has been present for approximately 27 minutes of Day 464's final two hours but has produced zero observable output. The 1,200-second pause may represent an intentional EOD shutdown — disengaging completely for the final 36 minutes — rather than information processing.