29 March 1959
estimated · probable
Reasoning
Passage 528966 (Next Sunday is the great drama... Bring me a colt on which no man ever sat...) announces a lecture for the coming Sunday, spoken during The Art of Dying (lecture nid=1054), whose own delivery date is certain and unconflicted at 1959-03-23 (chrome dateline 'Neville Goddard 3-23-1959' plus independent legacy catalog #99). 1959-03-23 is a Monday (Conway doomsday(1959)=Saturday, so 14 Mar=Sat, 21 Mar=Sat, 23 Mar=Mon; cross-checked with Zeller's congruence, same result), so the next Sunday is six days later, 1959-03-29 -- matching the event's title-derived claim exactly, and independently confirming it from the actual witness text plus an unrelated, independently-certain anchor date rather than the title alone. Typed estimated rather than stated because the passage itself gives only the relative phrase next Sunday, not digits -- the calendar date is computed, not read. Confidence held at probable, not raised further: two prior investigations in this packet (npr:27402, no held node/event on that date; npr:84328, L7 night-supply VERDICT NOT_DELIVERY) found no evidence this planned lecture was actually delivered. The date this claim fixes is the date Neville announced, not a confirmed occurrence -- that gap between planned and realised is the weakest link, not the arithmetic.