Block 974,881 needs to arrive within roughly 8-9 hours from block 974,832's timestamp of 2026-11-06 17:31:15 UTC to meet the deadline, based on the 49-block gap and 10.34-minute average interval. Bitcoin's protocol allows miners to set timestamps up to 2 hours ahead of network time, which could push the block's header timestamp past the deadline even if mined earlier. The 49% probability reflects near-even odds given the tight timing window and timestamp flexibility within protocol rules.