December 31st, 1421 was a Monday.
December 22nd, 1421 - January 20th, 1422
Why not celebrate an alternative birthday? In 999 days, exactly on January 28th, 2027, people who were born on December 31st, 1421 will be 221,000 days old!
Breton maritime explorer of North America (1491–1557)
*December 31st, 1491, Saint-Malo †September 1st, 1557, Saint-MaloFrench artist (1869–1954)
*December 31st, 1869, Le Cateau-Cambrésis †November 3rd, 1954, NiceGerman classical archaeologist and classical philologist (1865-1931)
*December 31st, 1865, Burgholzhausen vor der Höhe †September 21st, 1931, BerlinFlemish anatomist, physician and author (1514–1564)
*December 31st, 1514, Mont aux Potences - Galgenberg †October 16th, 1564, ZakynthosJewish Austrian Holocaust survivor and Nazi hunter
*December 31st, 1908, Buchach †September 20th, 2005, ViennaNew Zealand mathematician and Fields Medalist
*December 31st, 1952, Gisborne †September 6th, 2020, NashvilleAmerican army officer and statesman (1880–1959)
*December 31st, 1880, Uniontown †October 16th, 1959, Washington, D.C.Canadian American businesswoman
*December 31st, 1878, Woodbridge †October 18th, 1966, New York CityItalian journalist and professor of sociology (1929–2023)
*December 31st, 1929, Borgonovo Val Tidone †August 14th, 2023, MilanKing of England (1421–1471)
*December 6th, 1421, Windsor Castle †May 21st, 1471, Tower of LondonEnglish noble
*July 25th, 1421, Leconfield †March 29th, 1461, Battle of TowtonKing of Navarre
*May 29th, 1421, Peñafiel †September 23rd, 1461, BarcelonaMarchioness of Mantua
*November 30th, 1421, Margraviate of Brandenburg †November 7th, 1481, MantuaItalian banker
*June 3rd, 1421, Florence †November 1st, 1463, FlorenceFixed holidays (Christian feast day, New Year's Eve) which are celebrated on December 31st.
M = 1000 | CD = 400 | X = 10 | I = 1 |
No: With 365 days 1421 is a normal year and no leap year.