George Washington was born on February 11, 1731 (Old Style), at his parents’ Pope’s Creek Estate near Colonial Beach in Westmoreland County, Virginia. At the time, the entire British Empire, including its North American possessions, was on the Julian calendar; the Empire, not being bound to the Catholic Church, had not yet adopted the modern Gregorian calendar that Catholic countries had adopted in 1582. Consequently, by the 1730s, the Julian calendar used by Britain and the Colonies was eleven days behind the Gregorian, due to leap year differences. Furthermore, the British civil year began on March 25 rather than January 1, so that dates in February (such as this one) ‘belonged’ to the preceding year. (See Dual dating). In 1752, The British Empire switched to the Gregorian calendar; since then, Americans born prior to 1752, including Washington, have typically had their birthdays recognized under what their birthday would have been under the Gregorian calendar (“New Style” dates). Since, during the 1700s, February 11 under the Julian calendar would fall as February 22 on the Gregorian, Washington’s birthday has been generally recognized as February 22, 1732.