2039 (MMXXXIX) will be a common year starting on Saturday of the Gregorian calendar. Predicted events September 2 - The Destroyers for Bases Agreement's ninety-nine-year rent-free leases granted to the United States by the United Kingdom will expire. November 7 - Transit of Mercury. According to the United States Census Bureau, population of the United States will reach 400 million. Religious events September - According to the Kabbalistic commentator Nachmanides, the Messiah must come by th… (More on 2039)