December 20th, 1666 was a Monday.
November 23rd, 1666 - December 21st, 1666
Why not celebrate an alternative birthday? In 471 days, exactly on August 20th, 2025, people who were born on December 20th, 1666 will be 131,000 days old!
US tennis and badminton player
*December 20th, 1886, Healdsburg †December 5th, 1974, Chestnut HillFrench association football player
*December 20th, 1998, 19th arrondissement of ParisGerman noblewoman
*December 20th, 1669, Jena †January 6th, 1703, GräfentonnaFrench academic and politician (1841-1932)
*December 20th, 1841, former 1st arrondissement of Paris †February 16th, 1932, Thieuloy-Saint-AntoineTurkish politician; 27th Prime Minister of Turkey
*December 20th, 1955, Sivas ProvinceSuffragette, socialist, writer
*December 20th, 1851, Coulsdon †December 21st, 1933, HastingsItalian mathematician (1648-1737)
*December 20th, 1648, Milan †February 3rd, 1737, MilanAmerican actor and politician (1905–1968)
*December 20th, 1905, Brooklyn †May 5th, 1968, HollywoodPainter and sculptor (1666-1739)
*November 28th, 1666, Gudbrandsdalen †March 31st, 1739, CopenhagenTsar of Russia from 1682 to 1696
*August 27th, 1666, Moscow †January 29th, 1696, MoscowFrench Baroque composer and violinist
*April 18th, 1666, Paris †January 2nd, 1747, ParisWife of George I of Great Britain (1666-1726)
*September 15th, 1666, Celle Castle †November 13th, 1726, Ahlden HouseDuke of Savoy and King of Sardinia (1675-1732)
*May 14th, 1666, Turin †October 31st, 1732, MoncalieriTenth Sikh Guru (1666–1708)
*December 22nd, 1666, Patna †October 7th, 1708, NandedSwedish artist (1666-1729)
*September 4th, 1666, Stockholm †October 22nd, 1729, Parish of St Gertrud of GermanySwedish general during the Great Northern War
*November 9th, 1666, Swedish Ingria †October 24th, 1736, PernåGovernor of Connecticut (1666-1724)
*March 27th, 1666, Haverhill †September 20th, 1724, New LondonScottish nobleman and field marshal
*February 9th, 1666, Hamilton Palace †January 29th, 1737, London(1666-1742)
*September 17th, 1666, Klagenfurt †December 8th, 1742, ViennaItalian luthier
*November 25th, 1666, Cremona †January 1st, 1739, Cremona1st Baron Lansdowne
*March 9th, 1666, London †January 29th, 1735, Hanover SquareGerman theologian (1666-1733)
*August 14th, 1666, Gudensberg †May 3rd, 1733, Bad HersfeldFrench bishop (1666-1744)
*March 14th, 1666, Dijon †October 15th, 1744, DijonPrince of Parma
*August 12th, 1666, Colorno †September 6th, 1693, ParmaGerman painter (1666-1737)
*January 17th, 1666, Nuremberg †October 13th, 1737, NurembergFixed holidays (Christian feast day, Earliest date for Winter solstice's eve) which are celebrated on December 20th.
M = 1000 | D = 500 | C = 100 | L = 50 | X = 10 | V = 5 | I = 1 |
No: With 365 days 1666 is a normal year and no leap year.