Template:On this day - May 28

Don Pelayo

• 722 – In Asturias (present-day Spain) the Battle of Covadonga takes place between Muslim troops and Christian troops headed by Don Pelayo. It is considered the first significant defeat of Islam in Europe, and the beginning of the Reconquest of the Iberian Peninsula.
• 1292 – In Seville (present-day Spain), Infante Philip of Castile is born, son of Sancho IV and María de Molina (d. 1327).
• 1462 – Death of Luis de Beaumont, first Count of Lerín (Navarre, present-day Spain) (b. 1412).
• 1486 – In the Nasrid Kingdom of Granada (present-day Spain), the Christian army under the command of Gonzalo Fernández de Córdoba, the Great Captain, after hard-fought assaults in which Boabdil and Hamet el Zegrí were wounded, enters the city of Loja.
• 1767 – In Marrakesh, the first Treaty of Peace and Commerce between Spain and Morocco is signed.
• 1812 – In the locality of Escamela (New Spain), José María Morelos y Pavón fights against the royalists.
• 1864 – In Mexico, Maximilian of Habsburg and Charlotte of Belgium arrive in Veracruz.
• 1944 – The Revolution of 28 May ("La Gloriosa") takes place in Ecuador, during which president Carlos A. Arroyo del Río was overthrown.
• 1973 – In Argentina, the new government of Héctor José Cámpora resumes diplomatic relations with Cuba, as part of the turn to the left.
• 1985 – In Colombia, the political movement Patriotic Union (UP) is founded, within the peace process opened by the 1984 La Uribe Agreements between the government of Belisario Betancur and the FARC-EP.
• 1988 – Belgium officially signs peace with the Colombian province of Boyacá, following the war the latter declared on it in 1867 when it was a sovereign state.
• 2001 – Death of Francisco Varela, Chilean biologist and philosopher (b. 1946).
• 2009 – A strong earthquake strikes Honduras; its seismic wave also reaches the territories of Guatemala, El Salvador, Belize and towns such as Chetumal and Cancún in Mexico.
• 2011 – President Manuel Zelaya returns to Honduras after two years of exile due to the military coup d'état carried out against his Government in 2009.
• 2018 – Death of María Dolores Pradera, Spanish ballad singer and actress, who made numerous tours of Hispanic America, where she was very well known (b. 1924).
• 2023 – Death of Antonio Gala, Spanish poet, playwright, novelist, screenwriter and columnist (b. 1930).