Presidents day falls on February 17 next year (2/17/2020)
https://en.m.wikipedia.org/wiki/Washington%27s_Birthday
Presidents day falls on February 17 next year (2/17/2020)
https://en.m.wikipedia.org/wiki/Washington%27s_Birthday
February 22nd is George Washington's birthday per the Julian Calandar.
February 22nd
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.[24]
The federal holiday honoring Washington was originally implemented by an Act of Congress in 1879 for government offices in Washington (20 Stat. 277) and expanded in 1885 to include all federal offices (23 Stat. 516). As the first federal holiday to honor an American president, the holiday was celebrated on Washington's birthday under the Gregorian calendar, February 22.[25] On January 1, 1971, the federal holiday was shifted to the third Monday in February by the Uniform Monday Holiday Act.[26] This places it between February 15 and 21, which makes "Washington's Birthday" something of a misnomer, since it never occurs on Washington's actual birthday, February 22. (A rough analog of this phenomenon can be seen in Commonwealth realms, where the reigning monarch's official birthday is celebrated without regard to their actual date of birth.)
February 11th "Julian Calendar"
February 24th "Gregorian Calendar"