Located on the roof of One Times Square, the ball is a prominent part of a New Year’s Eve celebration in Times Square colloquially known as the ball drop, where the ball descends 141 feet (43 m) in 60 seconds down a specially designed flagpole, beginning at 11:59 p.m. ET, and resting at midnight to signal the start of the New Year.
Andrew Jackson, born on March 15, 1767, was the first President to be born in a log cabin. Martin Van Buren, born on December 5, 1782, was the first President to be born a citizen of the United States. Previous Presidents had been born before the American Revolution, and thus were born British subjects.
Eratosthenes calculated the circumference of the Earth without leaving Egypt. Eratosthenes knew that at local noon on the summer solstice in the Ancient Egyptian city of Swenet (known in ancient Greek as Syene, and now as Aswan) on the Tropic of Cancer, the Sun would appear at the zenith, directly overhead.