The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Given as scheduled in the regatta's own site banner: "HEAD OF THE CHARLES REGATTA - OCT. 16-18, 2026", with a countdown to the 2026 regatta on the history page.
Encyclopedia article: held on the penultimate complete weekend of October each year on the Charles River; the Championship events race last.[1]
Regatta release naming 776BC Official Rowing Apparel Partner of the world's largest three-day rowing event.[1]
Regatta release (Cambridge, Sept. 1, 2026): nearly 12,000 athletes and more than 370,000 spectators each October; the Chase Market Square.[1]
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.