The Strait of Hormuz is a critical chokepoint for global oil transport. Approximately one-third of all seaborne oil passes through this narrow waterway between Iran and Oman. Daily ship traffic varies based on market conditions, geopolitical tensions, and seasonal factors. The question asks whether on any single day through April 30, 2026, at least 20 vessels will transit the strait. This is a specific, observable metric tracked by maritime authorities and shipping databases. The market's 96% odds suggest traders view a 20-ship day as highly probable given the current elevated traffic levels and ongoing geopolitical tensions involving Iran and the Trump administration. Historic data shows that 20+ ships per day through Hormuz occurs regularly, making this outcome likely unless major disruptions occur. The current price reflects this underlying fundamental—that normal to elevated shipping volumes will persist through month-end. Watch for any Iranian sanctions escalation, Houthi Red Sea disruptions redirecting traffic, or major supply shocks that could alter shipping patterns. The resolution is straightforward: maritime tracking data from official sources will confirm whether any single day hits the 20-ship threshold.