On this day, February 18

On this day, February 18, in 1565 Miguel Lopez de Legazpi claimed Samar for King Felipe II of Spain.
The official calendar of the Republic of the Philippines: an almanac of Philippine commemorations enlivened with illustrations and information. –Manila: Presidential Communications Development and Strategic Planning Office, [2014].
On this day in 2010, Wikileaks began releasing secret US government documents.
https://www.britannica.com/on-this-day/February-18
On this day in 1913, Frederick Soddy introduced the word “isotope” to refer to the different forms that can be the existence of an element as a result of its radioactive transformation.
https://www.todayinsci.com/2/2_18.htm
February is Philippine Marathon for the Pasig River Month (Proclamation No. 780, s. 2005).
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