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1633 (MDCXXXIII) was a common year starting on Saturday of the Gregorian calendar and a common year starting on Tuesday of the Julian calendar, the 1633rd year of the Common Era (CE) and Anno Domini (AD) designations, the 633rd year of the 2nd millennium, the 33rd year of the 17th century, and the 4th year of the 1630s decade. As of the start of 1633, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.
|Ab urbe condita||2386|
|Balinese saka calendar||1554–1555|
|English Regnal year||8 Cha. 1 – 9 Cha. 1|
|Chinese calendar||壬申年 (Water Monkey)|
4329 or 4269
— to —
癸酉年 (Water Rooster)
4330 or 4270
|- Vikram Samvat||1689–1690|
|- Shaka Samvat||1554–1555|
|- Kali Yuga||4733–4734|
|Japanese calendar||Kan'ei 10|
|Julian calendar||Gregorian minus 10 days|
|Minguo calendar||279 before ROC|
|Thai solar calendar||2175–2176|
1759 or 1378 or 606
— to —
1760 or 1379 or 607
|Wikimedia Commons has media related to 1633.|
- February 13 – Galileo Galilei arrives in Rome for his trial before the Inquisition.
- February 13 – Fire engines are used for the first time in England in order to control and extinguish a fire that breaks out at London Bridge, but not before 43 houses are destroyed.
- March 1 – Samuel de Champlain reclaims his role as commander of New France, on behalf of Cardinal Richelieu.
- April 12 – Galileo Galilei is convicted of heresy by the Roman Catholic Church. 
- June 18 – Charles I is crowned King of Scots at St Giles' Cathedral, Edinburgh, according to Anglican rite in his first visit to Scotland since early childhood, although he has been Scottish monarch since 1625.
- June 22 – The Roman Catholic Church forces Galileo Galilei to recant his heliocentric view of the Solar System. According to legend, he claims Eppur si muove.
- July 7 – The Dutch East India Company fleet, led by Hans Putmans, attacks by surprise its ally Zheng Zhilong's base, near Xiamen.
- July 8 – Thirty Years' War: Battle of Oldendorf – The Swedish Empire defeats the Holy Roman Empire near Hessisch Oldendorf.
- July 8 – The epoch of the Javanese calendar, created by Sultan Agung of Mataram. It coincides with the start of the Hijri Year 1043 but the year numbering continues those of the pre-existing Saka calendar, thus making the calendar starts from year 1555 instead of 1.
- August 6 – William Laud becomes Archbishop of Canterbury.
- September 25 – Entry of KingLouis XIII of France into Nancy marking the occupation of the Duchy of Lorraine by France.
- September 26 – A group from the Plymouth Colony settles in Windsor, Connecticut, making it the first settlement in the state.
- October 22 – Battle of Liaoluo Bay: A large Ming dynasty fleet under Zheng Zhilong defeats a Dutch East India Company fleet at the island of Quemoy.
- The Jews of Poznań are granted the privilege of forbidding Christians to enter into their city quarter.
- Emperor of Ethiopia Fasilides expels Jesuit missionaries.
- Shogun Tokugawa Iemitsu of Japan issues the Sakoku Edict of 1635 outlawing Christianity, enforcing a policy of extreme isolationism (sakoku) until 1853.
- St Columb's Cathedral, Derry, Ireland, the first post-Reformation Anglican cathedral built in the British Isles and the first Protestant cathedral built in Europe, is completed.
- Mission San Luis de Apalachee is built in the New World by two Spanish friars.
- English colonists settle what will become the town of Hingham, Massachusetts.
- A professorship in Arabic studies is founded at the University of Cambridge in England.
- January 20 – Edmund Maine, English Member of Parliament (d. 1711)
- January 31 – Nathaniel Crew, 3rd Baron Crew of England (d. 1721)
- February 20 – Jan de Baen, Dutch portrait painter (d. 1702)
- February 23
- February 26 – Gustav Adolph, Duke of Mecklenburg-Güstrow and last Administrator of Ratzeburg (d. 1695)
- March 1 – Yi Seo-woo, Korean scholar (d. 1709)
- March 7 – Giovanni Battista Volpati, Italian painter (d. 1706)
- March 12 – Sir John Evelyn, 1st Baronet, of Godstone, English noble (d. 1671)
- March 17 – Alessandro Marchetti, Italian mathematician (d. 1714)
- March 25 – Samuel Whiting, Jr., American clergyman (d. 1713)
- March 26 – Mary Beale, British artist (d. 1699)
- March 30
- April 16 – Salomon Jansz van den Tempel, Dutch shipbuilder (d. 1673)
- April 19
- April 20 – Emperor Go-Kōmyō of Japan (d. 1654)
- April 24
- May 1
- May 21 – Joseph Chabanceau de La Barre, French composer (d. 1678)
- June 1 – Geminiano Montanari, Italian astronomer (d. 1687)
- June 16 – Jean de Thévenot, French traveler and scientist (d. 1667)
- June 19 – Philipp van Limborch, Dutch Protestant theologian (d. 1712)
- June 27 – Auguste of Schleswig-Holstein-Sonderburg-Glücksburg, German noble (d. 1701)
- July 1 – Johann Heinrich Heidegger, Swiss theologian (d. 1698)
- July 6 – Sir Henry Yelverton, 2nd Baronet, English Member of Parliament (d. 1670)
- July 25 – Joseph Williamson, English politician (d. 1701)
- September 6 – Sebastian Knüpfer, German composer (d. 1676)
- September 7 – Catharina Regina von Greiffenberg, Austrian writer and noble (d. 1695)
- September 8 – Ferdinand IV, King of the Romans (d. 1654)
- September 15 – William Croone, English physician and one of the original Fellows of the Royal Society (d. 1684)
- October 4
- October 14 – King James II of England (d. 1701)
- October 15 – Giordano Vitale, Italian mathematician (d. 1711)
- October 19 – Benedetto Gennari II, Italian painter (d. 1715)
- October 25 – Esaias Fleischer, Danish priest (d. 1697)
- October 29 – Antonio Magliabechi, Italian librarian (d. 1714)
- November 2 – George Gordon, 15th Earl of Sutherland, Scottish noble (d. 1703)
- November 10 – Thomas Jermyn, 2nd Baron Jermyn, Governor of Jersey (d. 1703)
- November 11 – George Savile, 1st Marquess of Halifax, English writer and statesman (d. 1695)
- November 15 – Gesina ter Borch, Dutch Golden Age painter (d. 1690)
- November 20 – Étienne de Carheil, French Jesuit priest, missionary to the Iroquois and Huron Indians (d. 1726)
- November 26 – Johann Christoph Wagenseil, German Christian Hebraist (d. 1705)
- December 18 – Willem van de Velde the Younger, Dutch painter (d. 1707)
- December 27 – Jean de Lamberville, French missionary (d. 1714)
- December 29
- January 15 – Polykarp Leyser II, German theologian (b. 1586)
- January 20 – Elizabeth Stanley, Countess of Huntingdon, English noblewoman and writer (b. 1588)
- March 1 – George Herbert, English poet and orator (b. 1593)
- March 3 – Magnus Brahe, Swedish noble (b. 1564)
- April 21 – Scipione Dentice, Neapolitan keyboard composer (b. 1560)
- May 5 – Thomas Freke, English politician (b. 1563)
- May 16 – Magdalena of Nassau-Dillenburg, German noblewoman (b. 1547)
- May 21 – Wolfgang Ernst I of Isenburg-Büdingen-Birstein, German count (b. 1560)
- June – Étienne Brûlé, French explorer (b. c. 1592)
- June 11 – Johannes Crellius, Polish–German theologian (b. 1590)
- June 14 – Christian, Duke of Schleswig-Holstein-Sonderburg-Ærø (1622–1633) (b. 1570)
- July 5 – Archduchess Margaret of Austria (b. 1567)
- July 7 – Lew Sapieha, Polish-Lithuanian noble (b. 1557)
- July 16 – John Casimir, Duke of Saxe-Coburg (b. 1564)
- July 22 – Trijntje Keever, Dutchwoman, presumed to have been the tallest woman ever (b. 1616)
- August 5 – George Abbot, Archbishop of Canterbury (b. 1562)
- August 10 – Anthony Munday, English writer (b. 1553)
- August 12
- August 17 – Gertrude More, English nun (b. 1606)
- August 30 – Magdalene of Jülich-Cleves-Berg, Countess Palatine of Pfalz-Zweibrücken (b. 1553)
- September – Henry Cary, 1st Viscount Falkland (b. c. 1575)
- September 4 – Richard Cecil, English politician (b. 1570)
- September 22 – Joam Mattheus Adami, Italian Jesuit missionary (b. 1576)
- September 26 – Bernardino de Almansa Carrión, Spanish Catholic prelate and Archbishop (b. 1579)
- October 2 – Scipione Borghese, Italian Catholic cardinal and art collector (b. 1577)
- October 24 – Jean Titelouze, French organist (b. c.1562)
- October 26 – Horio Tadaharu, Japanese warlord (b. 1596)
- November 3 – Lucio Massari, Italian painter (b. 1569)
- November 7 – Cornelis Drebbel, Dutch inventor (b. 1572)
- November 8
- November 14 – William Ames, English philosopher (b. 1576)
- December 1 – Infanta Isabella Clara Eugenia of Spain (b. 1566)
- December 8 – Theodoor Galle, Flemish engraver (b. 1571)
- December 12 – Hortensio Félix Paravicino, Spanish preacher and poet from the noble house of Pallavicini (b. 1580)
- December 17 or December 27 – Meletius Smotrytsky, Ruthenian religious activist and author (b. 1577)
- December 28 – Maria Maddalena de' Medici, Italian princess (b. 1600)
- "Fires, Great", in The Insurance Cyclopeadia: Being an Historical Treasury of Events and Circumstances Connected with the Origin and Progress of Insurance, Cornelius Walford, ed. (C. and E. Layton, 1876) p29
- "Galileo is convicted of heresy - Apr 12, 1633". HISTORY.com. Retrieved January 9, 2016.
- Schoell, Frédéric; Xaver, Franz, Freiherr von Zach (1832). Cours d'histoire des états européen. 27. de l'imprimerie royale et chez Duncker et Humblot. p. 183.CS1 maint: multiple names: authors list (link)
- "The Siege". BBC. Retrieved July 20, 2012.