Editing 1420 (section)

=== July&ndash;September ===
* [[July 14]] &ndash; The [[Hussites]] defeat and the Holy Roman Imperial forces begin a month-long fight in the [[Battle of Vítkov Hill]].
* [[August 7]] &ndash; Construction of the dome of [[Florence Cathedral]] is started, after [[Filippo Brunelleschi]] wins the commission for his "double shell" design.
* [[August 31]] &ndash; [[1420 Caldera earthquake|A 9.4 M<sub>S</sub>-strong earthquake]] shakes Chile's [[Atacama Region]], causing [[tsunami]]s in Chile, as well as [[Hawaii]] and [[Japan]].<ref name="El Mercurio, 2019">{{cite news |last=Guzmán |first=L. |date=February 14, 2019|language=es|title=Encuentran registros de megaterremoto ocurrido hace seis siglos en el norte de Chile |url=http://www.economiaynegocios.cl/noticias/noticias.asp?id=546452 |work=[[El Mercurio]] |location=Santiago, Chile |access-date=June 8, 2019}}</ref><ref name="Abad, 2018">Manuel Abad, Tatiana Izquierdo, Miguel Cáceres, Enrique Bernárdez and Joaquín Rodríguez-Vidal (2018). ''Coastal boulder deposit as evidence of an ocean-wide prehistoric tsunami originated on the Atacama Desert coast (northern Chile)''. Sedimentology. Publication: december, 13th, 2018. https://doi.org/10.1111/sed.12570</ref>
* [[September 3]] &ndash; [[Murdoch Stewart, Duke of Albany|Murdoch Stewart]] becomes the new [[Duke of Albany]] and Regent of Scotland for [[James I of Scotland|King James I]], upon the death of his father [[Robert Stewart, Duke of Albany|Robert Stewart]]. During his time governing Scotland, Murdoch makes no effort to secure King James's release until forced to do so by political pressure.<ref>J. D. Mackie, ''A History of Scotland'' (Penguin Books, 1964) p.97</ref>
* [[September 15]] &ndash; In a crusade against the Hussites, Holy Roman Imperial forces begin the [[Battle of Vyšehrad|siege of Vyšehrad]] 
* [[September 24]] &ndash; The Ottoman Army defeats a rebellion, led by [[:ro:Nicolae Csák|Miklós Csáki]], [[Voivode of Transylvania]] (now Romania). Two days later, the Ottoman troops loot and burn the city of [[Orăștie]] and take thousands of Transylvanian civilians as slaves.