1400 (MCD) was a leap year starting on Thursday of the Julian calendar, the 1400th year of the Common Era (CE) and Anno Domini (AD) designations, the 400th year of the 2nd millennium, the 100th and last year of the 14th century, and the 1st year of the 1400s decade. As of the start of 1400, the Gregorian calendar was 8 days ahead of the Julian calendar, which was the dominant calendar of the time. The year 1400 wasn't a leap year in the Proleptic Gregorian calendar.

Millennium: 2nd millennium
Centuries: 13th century14th century15th century
Decades: 1370s  1380s  1390s  – 1400s –  1410s  1420s  1430s
Years: 1397 1398 139914001401 1402 1403
1400 in other calendars
Gregorian calendar1400
Ab urbe condita2153
Armenian calendar849
Assyrian calendar6150
Balinese saka calendar1321–1322
Bengali calendar807
Berber calendar2350
English Regnal yearHen. 4 – 2 Hen. 4
Buddhist calendar1944
Burmese calendar762
Byzantine calendar6908–6909
Chinese calendar己卯(Earth Rabbit)
4096 or 4036
    — to —
庚辰年 (Metal Dragon)
4097 or 4037
Coptic calendar1116–1117
Discordian calendar2566
Ethiopian calendar1392–1393
Hebrew calendar5160–5161
Hindu calendars
 - Vikram Samvat1456–1457
 - Shaka Samvat1321–1322
 - Kali Yuga4500–4501
Holocene calendar11400
Igbo calendar400–401
Iranian calendar778–779
Islamic calendar802–803
Japanese calendarŌei 7
Javanese calendar1314–1315
Julian calendar1400
Korean calendar3733
Minguo calendar512 before ROC
Nanakshahi calendar−68
Thai solar calendar1942–1943
Tibetan calendar阴土兔年
(female Earth-Rabbit)
1526 or 1145 or 373
    — to —
(male Iron-Dragon)
1527 or 1146 or 374

Events change

January–December change

  • January – Henry IV of England stops the Epiphany Rising and kills the Earls of Kent, Huntingdon and Salisbury and the Baron le Despencer, because they tried to have Richard II made as king.
  • February – Henry Percy (Hotspur) leads English army into Scotland.
  • February 14 – Richard II of England dies in Pontefract Castle but we don't know what killed him. King Henry IV might have ordered people to starve him to death.
  • March 23 – Five-year-old Trần Thiếu Đế is forced to stop being the ruler of Đại Việt (modern-day Vietnam) and give the throne to his maternal grandfather Hồ Quý Ly. This was the end of the Trần Dynasty after 175 years and the start of the Hồ Dynasty. Hồ Quý Ly changes the country's name to Đại Ngu.
  • May – Frederick I, Duke of Brunswick-Lüneburg tries to take over from Wenceslaus, King of the Romans. However, Frederick is murdered shortly after.
  • August
    • The English capture the city of Edinburgh in Scotland but do not capture Edinburgh Castle.
    • The princes of the German states vote that Wenceslaus is not King of the Romans because he did a bad job as king and because of his mental illnesses.
  • August 21 – Rupert, Count Palatine of the Rhine, is elected as King of the Romans.
  • September 16 – Owain Glyndŵr is made Prince of Wales by the Welsh, and he starts attacking English castles in north-east Wales.
  • November – Sack of Aleppo (1400) during Timur's conquest of Syria.
  • December – Manuel II Palaiologos becomes the only Byzantine Emperor ever to visit England.

Date unknown change

  • Timur wins against the Ottoman Empire and the Mamluk Sultanate of Egypt. Timur captures the city of Damascus what is today Syria. Timur's army kills many of the city's people.
  • Timur conquers the Empire of the Black Sheep Turkomans, in present-day Azerbaijan, and the Jalayirid Dynasty in present-day Iraq. Black Sheep ruler Qara Yusuf and Jalayirid Sultan Ahmad run away and go to live with the Ottoman Sultan Bayezid I.
  • King Jeongjong of Joseon stops being king because he is afraid his younger brother, Taejong, will attack him. Taejong becomes king.
  • Prince Parameswara starts the Malacca Sultanate, in what is western Malaysia and northern Sumatra today.
  • Hananchi succeeds Min as King of Hokuzan in what is Okinawa, Japan today.
  • Wallachia (modern-day southern Romania) stops the Ottomans from invading.
  • A Wallachian army captures Iuga, and makes Alexandru cel Bun the Prince of Moldavia.
  • The Kingdom of Kongo begins.
  • The Haast's eagle and Moa are both made extinct by Māori hunters.
  • The Mississippian culture starts to decline.
  • Europe is reported to have around 52 million inhabitants.
  • The House of Medici becomes powerful in Florence.
  • Newcastle upon Tyne is created a county corporate by Henry IV of England.
  • Jean Froissart completes his Chronicles, detailing the events of the 14th Century in France.

Births change

  • January 13 – Infante John of Portugal, the Constable (d. 1442)
  • May 19 – John Stourton, 1st Baron Stourton, English baron (d. 1462)
  • July 26 – Isabel le Despenser, Countess of Worcester, English noble (d. 1439)
  • December 25 – John Sutton, 1st Baron Dudley, Lord Lieutenant of Ireland (d. 1487)
  • date unknown
    • James Tuchet, 5th Baron Audley (d. 1459)
    • Luca della Robbia, Florentine sculptor (d. 1482)
    • Isabella, Duchess of Lorraine (d. 1453).
    • Richard Neville, 5th Earl of Salisbury, English politician (d. 1460)
    • Owen Tudor, Welsh courtier (d. 1461)
    • Rogier van der Weyden, Dutch painter (or 1399)
    • Hans Multscher, German painter and sculptor (d. 1467)
    • Helene Kottanner, Hungarian writer and courtier (d. after 1470)
  • probable – Marina Nani, Venetian dogaressa (d. 1473)
  • probable – Giovanna Dandolo, Venetian dogaressa (d. after 1462)

Deaths change

  • January 7
    • Thomas Holland, 1st Duke of Surrey, English politician (executed) (b. 1374)
    • John Montagu, 3rd Earl of Salisbury, English earl (executed) (b. 1350)
  • January 13 – Thomas le Despenser, 1st Earl of Gloucester, English politician (executed) (b. 1373)
  • January 16 – John Holland, 1st Duke of Exeter, English politician (executed)
  • February 14 – King Richard II of England, (probably murdered) (b. 1367)
  • April 21 – John Wittlebury, English politician (b. 1333)
  • April 23 – Aubrey de Vere, 10th Earl of Oxford, third son of John de Vere (b. 1338)
  • April 28 – Baldus de Ubaldis, Italian jurist (b. 1327)
  • June 5 – Frederick I, Duke of Brunswick-Lüneburg, rival King of the Romans
  • June 17 – Jan of Jenštejn, Archbishop of Prague (b. 1348)
  • October 25 – Geoffrey Chaucer, English poet (b. c. 1343)
  • November 8 – Peter of Aragon, Aragonese infante (b. 1398)
  • November 20 – Elizabeth of Moravia, Margravine of Meissen (b. 1355)
  • November – Tarabya of Ava (b. 1368)
  • December – Archibald the Grim, Scottish magnate (b. 1328)
  • date unknown – Narayana Pandit, Indian mathematician (b. 1340)