January 26– England and France agree to a truce and ceasefire in the ongoing Revolt of Ghent. The Kingdom of Scotland goes to war to retake Scottish territory occupied by the English Army.
March 3– King Richard II of England summons the members of the House of Commons and the House of Lords to assemble at Salisbury on April 29.
April–June
April 29– The Parliament of England opens a four-week session at Salisbury at the palace of the Bishop of Salisbury. Sir James Pickering is elected as Speaker of the House of Commons for the third consecutive time of his career.
May 27– The English Parliament adjourns and King Richard II gives royal assent to laws passed during the session.
July 19– Portugal's Navy, with 34 ships, breaks the Castilian blockade of the besieged city of Lisbon, defeating a force of 53 Castilian ships in the Battle of Tejo.
August 5– An earthquake strikes the island of Lesbos in Greece, killing numerous people including the Genoan Lord of Lesbos, Francesco I Gattilusio, along with his two eldest sons, Andronico and Domenico. His son Jacopo Gattiliuso survives and rules the island under the name Francesco II.
August 16– The Hongwu Emperor of Ming China hears a case of a couple who tore paper money notes, while fighting over them. Under the law, this is considered an act of destroying stamped government documents, which is to be punished by a caning with a bamboo rod of 100 strokes. However, the Emperor decides to pardon them, on the grounds that it was unintentional.
September 3– The siege of Lisbon by the Castilian Army ends as the Portuguese defenders protect the capital of the kingdom of Portugal.
September 28– King Richard II summons the English Parliament to meet on November 12.
Zain Al-Abidin succeeds his father, Shah Shuja, as ruler of the Muzaffarids in central Persia.
Shortly before his death on the last day of the year, John Wycliffe sends out tracts against Pope Urban VI, who has not turned out to be the reformist Wycliffe had hoped.
Qara Muhammad succeeds Bairam Khawaja, as ruler of the Kara Koyunlu ("Black Sheep Turkomans"), in modern-day Armenia and northern Iraq.
Timur conquers the northern territories of the Jalayirid Empire, in western Persia.
↑Boardman, Stephen (2007), The Early Stewart Kings: Robert II and Robert III, 1371–1406, The Stewart Dynasty in Scotland Series, Edinburgh: John Donald, an imprint of Birlinn Ltd, p.118, ISBN978-1-904607-68-7
↑Sir Herbert Maxwell, A History of the House of Douglas: From the Earliest Times Down to the Legislative Union of England and Scotland, Volume 1 (Freemantle & Company, 1902) pp.92-93
↑Cohn, S. K. (2013). Popular Protest in Late Medieval English Towns. Cambridge: Cambridge University Press. p.42. ISBN978-1-10702-780-0.
↑Miguel Duarte, Luís, Batalhas da História de Portugal – Guerra pela Independência, Academia Portuguesa de História, Lisboa, 2006, Vol. IV, pp. 88-92
↑Tancredo de Morais, História da Marinha Portuguesa (History of the Portuguese Navy) (Lisbon: Clube Militar Naval, 1940) p.185
↑Friedrich Ebrard, Der erste Annäherungsversuch König Wenzels an den schwäbisch-rheinischen Städtebund 1384-1385. Eine historische Untersuchung. (King Wenceslaus's First Attempt at Rapprochement with the Swabian-Rhenish League of Cities, 1384–1385. A Historical Investigation) (Strasbourg, 1877) online im Internet Archive
↑Wright, Christopher (2014). The Gattilusio Lordships and the Aegean World 1355-1462. Brill. p.46.
↑Wyrozumski, Jerzy (1997). Królowa Jadwiga. Między epoką piastowską i jagiellońską[Queen Jadwiga: Between the Piast and Jagiellonian Eras]. Kraków: Universitas. pp.83–84. ISBN83-7052-934-8.